ARTICULABLE ULTRASONIC SURGICAL INSTRUMENT, SURGICAL INSTRUMENT AND ROBOTIC SURGICAL INSTRUMENT

专利摘要:
flexible harmonic waveguides/blades for surgical instruments. in one embodiment, a surgical instrument comprises an articulated harmonic waveguide. the pivotable harmonic waveguide comprises a first drive section comprising a proximal end and a distal end. the proximal end of the first drive section can be configured to connect to an ultrasonic transducer. the pivotable harmonic waveguide further comprises a flexible first waveguide coupled to the distal end of the first drive section. an end actuator extends distally from the first flexible waveguide. the surgical instrument further comprises a pivot actuator for flexing the first flexible waveguide.
公开号:BR112015009030B1
申请号:R112015009030-3
申请日:2013-10-09
公开日:2022-01-11
发明作者:Kevin L. Houser；Daniel W. Price；William A. Olson；Jeffrey D. Messerly；Foster B. Stulen
申请人:Ethicon Endo-Surgery, Inc；
IPC主号:

专利说明:

REFERENCE TO RELATED ORDERS
[001] The present application relates to the following concurrently filed US patent applications, which are incorporated herein by reference in their entirety: US Patent Application Serial No., entitled "Surgeon Feedback Sensing and Display Methods", no. ° of attorney's document END7046USNP/110391.
[002] The present application relates to the following previously filed US patent applications, which are incorporated herein by reference in their entirety: US Patent Application Serial No. 13/539,096 entitled "Haptic Feedback Devices for Surgical Robot ", attorney's document no. END7042USNP/110388; US Patent Application Serial No. 13/539,110 entitled "Lockout Mechanism for Use with Robotic Electrosurgical Device", Attorney Document No. END7043USNP/110389; US Patent Application Serial No. 13/539,117 entitled "Closed Feedback Control for Electrosurgical Device", Attorney Document No. END7044USNP/110390; US Patent Application Serial No. 13/538,588 entitled "Surgical Instruments with Articulating Shafts", Attorney Document No. END6423USNP/110392; US Patent Application Serial No. 13/538,601 entitled "Ultrasonic Surgical Instruments with Distally Positioned Transducers", Attorney Document No. END6819USNP/110393; US Patent Application Serial No. 13/538,700 entitled "Surgical Instruments with Articulating Shafts", Attorney Document No. END7047USNP/110394; US Patent Application Serial No. 13/538,711 entitled "Ultrasonic Surgical Instruments with Distally Positioned Jaw Assemblies", Attorney Document No. END7048USNP/110395; US Patent Application Serial No. 13/538,720 entitled "Surgical Instruments with Articulating Shafts", Attorney Document No. END7049USNP/110396; and US Patent Application Serial No. 13/538,733 entitled "Ultrasonic Surgical Instruments with Control Mechanisms", Attorney Document No. END7050USNP/110397. BACKGROUND
[003] Various modalities are targeted at surgical devices including various articulating harmonic waveguides.
[004] Ultrasonic surgical devices such as ultrasonic scalpels are used in many applications in surgical procedures because of their unique performance characteristics. Depending on specific device configurations and operating parameters, ultrasonic surgical devices can offer substantially simultaneous tissue transection and coagulation homeostasis, desirably minimizing patient trauma. An ultrasonic surgical device comprises a proximally positioned ultrasonic transducer and an instrument coupled to the ultrasonic transducer, with a distally mounted end actuator comprising an ultrasonic blade for cutting and cauterizing tissue. The end actuator is typically attached to a handle and/or robotic surgical implement via a rod. The blade is acoustically coupled to the transducer via a waveguide extending through the shaft. Ultrasonic surgical devices of this nature can be configured for use in open, laparoscopic or endoscopic surgical procedures, including robotically assisted procedures.
[005] Ultrasonic energy cuts and coagulates tissues using temperatures lower than those used in electrosurgical procedures. Vibrating at high frequencies (eg 55,500 times per second), the ultrasonic blade denatures protein present in tissues to form a sticky clot. The pressure exerted on the tissues by the surface of the blade flattens the blood vessels and allows the clot to form a hemostatic seal. A surgeon can control cutting and clotting speed through the force applied to tissues by the extremity actuator, the time for which the force is applied, and the level of excursion selected for the extremity actuator.
[006] Additionally, electrosurgical devices are used in many surgical applications. Electrosurgical devices apply electrical energy to tissues in order to treat them. An electrosurgical device may comprise an instrument with a distally mounted end actuator comprising one or more electrodes. The end actuator can be positioned against the tissue so that the electrical current is introduced into the tissue. Electrosurgical devices can be configured for bipolar or monopolar operation. During bipolar operation, current is introduced into and returned from tissue by the active and return electrodes, respectively, of the end actuator. During monopolar operation, current is introduced into the tissue by an active electrode of the end actuator and returned through a return electrode (eg, a grounding plate) separately located on the patient's body. The heat generated by the flow of current through the tissue can form hemostatic seals within the tissue and/or between tissues and thus can be particularly useful for cauterizing blood vessels, for example. The end actuator of an electrosurgical device sometimes also comprises a cutting element that is capable of moving with respect to tissue and electrodes to transection the tissue.
[007] The electrical energy applied by an electrosurgical device can be transmitted to the instrument by a generator. Electrical energy may be in the form of radio frequency ("RF") energy. RF energy is a form of electrical energy that can be in the frequency range of 300 kHz to 1 MHz. During operation, an electrosurgical device can transmit low-frequency RF energy through tissue, which causes ionic agitation, or ionic friction, in fact resistive heating, thus increasing the tissue temperature. Because a precise boundary can be created between the affected tissue and the surrounding tissue, surgeons can operate with a high level of precision and control, without sacrificing adjacent tissue that is not the target of the operation. The low operating temperatures of RF energy can be useful for removing, shrinking, or sculpting soft tissue while simultaneously cauterizing blood vessels. RF energy can work particularly well on connective tissue, which mainly comprises collagen and shrinks when it comes in contact with heat.
[008] In many cases, it is desirable to use an ultrasonic blade that is curved or otherwise asymmetrical. Currently, asymmetrical blades are machined to a curved state. It would be desirable to have a swiveling harmonic blade that can be operated in a straight configuration or in a curved configuration, and which can be moved between straight and curved configurations. SUMMARY
[009] Several modalities described here are directed to surgical instruments that comprise an articulated harmonic waveguide. In one embodiment, a surgical instrument comprises an articulated harmonic waveguide. The pivotable harmonic waveguide comprises a first drive section comprising a proximal end and a distal end. The proximal end of the first drive section can be configured to connect to an ultrasonic transducer. The pivotable harmonic waveguide further comprises a flexible first waveguide coupled to the distal end of the first drive section. An end actuator extends distally from the first flexible waveguide. The surgical instrument further comprises a pivot actuator for flexing the first flexible waveguide. DRAWINGS
[0010] Aspects of the various modalities are particularly presented in the appended claims. The various modalities, however, as regards both the organization and the methods of operation, together with the advantages thereof, can be better understood with reference to the description given below, considered in conjunction with the attached drawings as follows:
[0011] Figure 1 illustrates an embodiment of a surgical system that includes a surgical instrument and an ultrasonic generator.
[0012] Figure 2 illustrates an embodiment of the surgical instrument shown in
[0013] Figure 1.
[0014] Figure 3 illustrates an embodiment of an ultrasonic end actuator.
[0015] Figure 4 illustrates another embodiment of an ultrasonic end actuator.
[0016] Figure 5 illustrates an exploded view of an embodiment of the surgical instrument shown in Figure 1.
[0017] Figure 6 illustrates a cutout view of a modality of the surgical instrument shown in Figure 1.
[0018] Figure 7 illustrates several internal components of an exemplifying modality of the surgical instrument shown in Figure 1
[0019] Figure 8 illustrates a top view of an embodiment of a surgical system that includes a surgical instrument and an ultrasonic generator.
[0020] Figure 9 illustrates an embodiment of a rotation set included in an exemplary embodiment of the surgical instrument of Figure 1.
[0021] Figure 10 illustrates an embodiment of a surgical system that includes a surgical instrument having a single-element end actuator.
[0022] Figure 11 is a perspective view of a modality of an electrically powered surgical instrument.
[0023] Figure 12 is a side view of a handle of an embodiment of the surgical instrument of Figure 11, with one half of a handle body removed to illustrate some of the components therein.
[0024] Figure 13 illustrates a perspective view of an embodiment of the end actuator of the surgical instrument of Figure 11, with the jaws open and the distal end of an axially movable element in a retracted position.
[0025] Figure 14 illustrates a perspective view of an end actuator embodiment of the surgical instrument of Figure 11, with the jaws closed and the distal end of an axially movable element in a partially advanced position.
[0026] Figure 15 illustrates a perspective view of an embodiment of the axially movable element of the surgical instrument of Figure 11.
[0027] Figure 16 illustrates a cross-section of an end actuator modality of the surgical instrument of Figure 11.
[0028] Figure 17 illustrates a section of a perspective view of an electrically powered wireless surgical instrument modality.
[0029] Figure 18A illustrates a side view of a handle of an embodiment of the surgical instrument of Figure 17, with one half of the handle body removed to illustrate various components therein.
[0030] Figure 18C illustrates the main components of the controller, according to one embodiment.
[0031] Figure 18C illustrates the main components of the controller, according to an embodiment.
[0032] Figure 19 illustrates a block diagram of an embodiment of a robotic surgical system.
[0033] Figure 20 illustrates an embodiment of a robotic arm car.
[0034] Figure 21 illustrates an embodiment of the robotic manipulator of the robotic arm car of Figure 20.
[0035] Figure 22 illustrates an embodiment of a robotic arm car with a joint structure of alternative configuration.
[0036] Figure 23 illustrates an embodiment of a controller that can be used in conjunction with a robotic arm car, such as the robotic arm cars of Figures 19 to 22.
[0037] Figure 24 illustrates an embodiment of an ultrasonic surgical instrument adapted for use with a robotic system.
[0038] Figure 25 illustrates an embodiment of an electrosurgical instrument adapted for use with a robotic system.
[0039] Figure 26 illustrates a modality of an instrument drive assembly, which can be coupled to surgical manipulators to receive and control the surgical instrument shown in Figure 24.
[0040] Figure 27 illustrates another view of the actuation assembly modality of the instrument of Figure 26, which includes the surgical instrument of Figure 24.
[0041] Figure 28 illustrates another view of the actuation assembly modality of the instrument of Figure 26, which includes the electrosurgical instrument of Figure 25.
[0042] Figures 29 to 31 illustrate additional views of the adapter portion of the drive assembly mode of the instrument of Figure 26.
[0043] Figures 32 to 34 illustrate an embodiment of the instrument mounting portion of Figures 24 to 25, showing components intended to convert the movement of driven elements into movement of the surgical instrument.
[0044] Figures 35 to 37 illustrate an alternative embodiment of the instrument mounting portion of Figures 24 to 25, showing an alternative exemplary mechanism for converting the rotation of driven elements into rotary motion about the geometric axis of the rod, and a alternative example mechanism for generating reciprocating translation of one or more elements along the axis of rod 538.
[0045] Figures 38 to 42 illustrate an alternative embodiment of the instrument mounting portion of Figures 24 to 25, showing another alternative exemplifying mechanism for converting the rotation of driven elements into rotary motion around the geometric axis of the rod.
[0046] Figures 43 to 46A illustrate an alternative embodiment of the instrument mounting portion, showing an alternative exemplary mechanism for differential translation of elements along the geometric axis of the rod (eg, for articulation).
[0047] Figures 46B to 46C illustrate one embodiment of an instrument mounting portion comprising internal power and energy sources.
[0048] Figure 47 illustrates an embodiment of an articulated harmonic waveguide.
[0049] Figures 48A to 48C illustrate an embodiment of a pivotable harmonic waveguide comprising a flexible loop-shaped waveguide.
[0050] Figure 49 illustrates an embodiment of an articulated harmonic waveguide comprising a hollow end actuator.
[0051] Figure 50 illustrates an embodiment of an articulated harmonic waveguide comprising a flexible circular waveguide and a solid end actuator.
[0052] Figure 51 illustrates an embodiment of an articulated harmonic waveguide comprising a flexible loop-shaped waveguide with one or more slots formed therein.
[0053] Figures 52A to 52B illustrate an embodiment of a pivotable harmonic waveguide comprising a first drive section, a first flexible waveguide, a second drive section, and a second flexible waveguide.
[0054] Figures 53A to 53B illustrate an embodiment of an articulated harmonic waveguide comprising a wave amplification section.
[0055] Figure 54 illustrates an embodiment of the articulating harmonic waveguide of Figures 53A to 53B in a flexed position.
[0056] Figures 55A to 55B illustrate an embodiment of a linkage actuator.
[0057] Figure 56 illustrates a modality of a articulation actuator with two cables.
[0058] Figure 57 illustrates an embodiment of an ultrasonic surgical instrument comprising a articulating harmonic waveguide and a total curvature limiter.
[0059] Figure 58 illustrates an embodiment of an ultrasonic surgical instrument comprising a articulating harmonic waveguide and a two-stage electrical total curvature limiter.
[0060] Figure 59 illustrates an embodiment of an articulated harmonic waveguide that comprises a total curvature limiter.
[0061] Figure 60 illustrates an embodiment of an ultrasonic surgical instrument comprising a pivotable harmonic waveguide and a total curvature limiter comprising a viewing window.
[0062] Figure 61 illustrates an embodiment of an articulated harmonic waveguide comprising a flexible waveguide centered around an antinode.
[0063] Figure 62 illustrates an embodiment of a robotic ultrasonic surgical instrument comprising an articulating harmonic waveguide.
[0064] Figure 63 illustrates an embodiment of a surgical instrument similar to a bayonet forceps.
[0065] Figures 64A to 64B illustrate an embodiment of a flexible ultrasonic shear instrument comprising a pivotable harmonic waveguide.
[0066] Figures 65A to 65B illustrate an embodiment of a flexible ultrasonic shear instrument.
[0067] Figures 66A to 66B illustrate an embodiment of a flexible ultrasonic shear instrument comprising a flexible sheath with a plurality of bending features. DESCRIPTION
[0068] Various modalities are directed at an ultrasonic surgical instrument including a articulating harmonic waveguide. The ultrasonic blade may comprise a proximally located straight drive section extending along a longitudinal axis and a distally located flexible waveguide coupled to the straight flexible drive section at an angle from the longitudinal axis. The flexible waveguide can be pivoted to define a radius of curvature and can subtend a first angle. The point of tangency between the flexible waveguide and the drive section can be at a node, an antinode, or between a node and an antinode of the articulating harmonic waveguide. The pivotable harmonic waveguide can be balanced, for example, based on the properties of the flexible waveguide. A balanced pivoting harmonic waveguide may have vibrational modes that are purely and/or substantially longitudinal (eg, in the longitudinal axis direction). To achieve equilibrium, the articulating harmonic waveguide can be constructed, as described above, so that a node and/or antinode occurs at the point of tangency when the articulating harmonic waveguide is moved to a resonant frequency.
[0069] Some modalities are directed at a surgical instrument comprising an end actuator and an articulating harmonic waveguide that extend along a longitudinal axis. The pivotable harmonic waveguide is acoustically coupled to the end actuator and extends proximally from the end actuator through the stem. The pivotable harmonic waveguide may comprise a flexible waveguide portion positioned on the longitudinal axis. The waveguide may also comprise first and second flanges positioned at nodes of the waveguide. The first flange may be positioned distally to the flexible waveguide portion, with the second flange positioned proximally to the flexible waveguide portion. A first control member may be coupled to the first flange and extend proximally through the second flange and stem. Proximal translation of the first control member may proximally pull the first flange, causing the stem and waveguide to revolve away from the longitudinal axis, toward the first control member.
[0070] Reference will now be made, in detail, to various modalities, including modalities that show exemplary implementations of manual and robotic surgical instruments with end actuators that comprise ultrasonic and/or electrosurgical elements. Whenever possible, similar or similar reference numbers may be used in the figures, and may indicate similar or similar functionality. The figures represent exemplifying modalities of the surgical instruments and/or methods of use presented, for illustrative purposes only. One of skill in the art will readily recognize from the description below that alternative exemplary embodiments of the structures and methods illustrated herein may be used without departing from the principles described herein.
[0071] Figure 1 is a right side view of an embodiment of an ultrasonic surgical instrument 10. In the illustrated embodiment, the ultrasonic surgical instrument 10 can be used in various surgical procedures, including traditional endoscopic or open surgical procedures. In an exemplary embodiment, the ultrasonic surgical instrument 10 comprises a handle assembly 12, an elongated shaft assembly 14 and an ultrasonic transducer 16. The handle assembly 12 comprises a trigger assembly 24, a distal rotation assembly 13 and an 28. The elongated stem assembly 14 comprises an end actuator assembly 26, which comprises elements for dissecting tissue or mutually grasping, cutting and coagulating blood vessels and/or tissue, and actuator elements for actuating the actuator assembly. end 26. Handle assembly 12 is adapted to receive ultrasonic transducer 16 at the proximal end. The ultrasonic transducer 16 is mechanically engaged with the elongate stem assembly 14 and portions of the end actuator assembly 26. The ultrasonic transducer 16 is electrically coupled to a generator 20 via a cable 22. Although most drawings depict a in conjunction with multiple end actuators 26, for use in conjunction with laparoscopic surgical procedures, the ultrasonic surgical instrument 10 can be used in more traditional open surgical procedures and, in other embodiments, can be configured for use in endoscopic procedures. For purposes of the present invention, the ultrasonic surgical instrument 10 is described in terms of an endoscopic instrument, however, it is contemplated that an open and/or laparoscopic version of the ultrasonic surgical instrument 10 may also include the same or similar operating components and features, as described here.
[0072] In various embodiments, the generator 20 comprises various functional elements, such as modules and/or blocks. Different functional elements or modules can be configured to trigger different types of surgical devices. For example, an ultrasonic generator module 21 can drive an ultrasonic device, such as the ultrasonic surgical instrument 10. In some exemplary embodiments, the generator 20 also comprises an electrosurgery/RF generator module 23 to drive an electrosurgical device (or an ultrasonic surgical instrument electrosurgical instrument 10). In various embodiments, generator 20 may be integrally formed within handle assembly 12. In such implementations, a battery would be co-located within handle assembly 12 to act as the power source. Figure 18A and the attached descriptions present an example of these implementations.
[0073] In some embodiments, the generator module for electrosurgery/RF 23 can be configured to generate a therapeutic and/or sub-therapeutic energy level. In the exemplary embodiment illustrated in Figure 1, the generator 20 includes a control system 25 integral with the generator 20, and a foot switch 29 connected to the generator via a cable 27. The generator 20 may also comprise an activation mechanism. to activate a surgical instrument such as instrument 10. The activation mechanism may include a power switch (not shown) as well as a foot switch 29. When activated by foot switch 29, the generator 20 may provide power to drive the assembly of the surgical instrument 10 and to drive the end actuator 18 at a predetermined level of excursion. Generator 20 drives or excites the acoustic array at any suitable resonant frequency of the acoustic array, and/or derives therapeutic/subtherapeutic RF or electromagnetic energy.
[0074] In one embodiment, the electrosurgical/RF generator module 23 may be implemented as an electrosurgical unit (ESU) capable of providing sufficient power to perform bipolar electrosurgery using radio frequency (RF) energy. In one embodiment, the ESU may be an ERBE ICC 350 bipolar device, available from ERBE USA, Inc. of Marietta, GA, USA. In bipolar electrosurgery applications, as previously discussed, a surgical instrument with an active electrode and a return electrode may be used, where the active electrode and the return electrode may be positioned against, or adjacent to, the tissue to be treated. , so that current can flow from the active electrode to the return electrode through the tissue. Consequently, the generator of the electrosurgical/RF module 23 can be configured for therapeutic purposes by applying sufficient electrical energy to the T tissue to treat the tissue (eg, cauterization).
[0075] In one embodiment, the electrosurgical/RF generator module 23 may be configured to provide a sub-therapeutic RF signal to implement a tissue impedance measurement module. In one embodiment, the electrosurgical/RF generator module 23 comprises a bipolar radio frequency generator, as described in more detail below. In one embodiment, the electrosurgical/RF generator module 12 may be configured to monitor the electrical impedance Z of the tissue T, and to control the time and power level characteristics based on the tissue T, via a return electrode disposed over a gripper element of the end actuator assembly 26. Accordingly, the electrosurgical/RF generator module 23 may be configured for sub-therapeutic purposes for measuring impedance or other electrical characteristics of T tissue. Techniques and circuit configurations for measuring impedance or other electrical characteristics of T-tissue are discussed in greater detail in Commonly Assigned US Patent Publication No. 2011/0015631 entitled "Electrosurgical Generator for Ultrasonic Surgical Instruments", the disclosure of which is incorporated herein by reference. , in its entirety.
[0076] A suitable ultrasonic generator module 21 may be configured to operate functionally similar to the GEN300 equipment, available from Ethicon Endo-Surgery, Inc. of Cincinnati, Ohio, USA, as shown in one or more of the following US patents , all of which are incorporated herein by reference: US Patent No. 6,480,796 (Method for Improving the Start Up of an Ultrasonic System Under Zero Load Conditions), US Patent No. 6,537,291 (Method for Detecting Blade Breakage Using Rate and/or Impedance Information), US Patent No. 6,662,127 (Method for Detecting Presence of a Blade in an Ultrasonic System), US Patent No. 6,678,899 (Method for Detecting Transverse Vibrations in an Ultrasonic Surgical System), US Patent No. 6,977,495 (Detection Circuitry for Surgical Handpiece System), US Patent No. 7,077,853 (Method for Calculating Transducer Capacitance to Determine Transducer Temperature), US Patent No. 7,179,271 (Method for Driving an Ultrasonic System in to Improve Acquisition of Blade Resonance Frequency at Startup), and US Patent No. 7,273,483 (Apparatus and Method for Alerting Generator Function in an Ultrasonic Surgical System).
[0077] It should be understood that, in various embodiments, the generator 20 can be configured to operate in various modes. In one mode, the generator 20 may be configured so that the ultrasonic generator module 21 and the electrosurgical/RF generator module 23 may be independently operated.
[0078] For example, the ultrasonic generator module 21 can be activated to apply ultrasonic energy to the end actuator assembly 26 and subsequently therapeutic or sub-therapeutic RF energy can be applied to the end actuator assembly 26 by the generator module electrosurgical/RF 23. As previously discussed, electrosurgical/therapeutic RF energy can be applied to tissue pinched between pinch elements of the end actuator assembly 26 to measure tissue impedance so as to control activation, or modify the activation of the ultrasonic generator module 21. The tissue impedance feedback from the application of subtherapeutic energy can also be used to activate a therapeutic level of the electrosurgical/RF generator module 23 to cauterize tissue (eg, blood vessel) clamped between clamp elements of the end actuator assembly 26.
[0079] In another embodiment, the ultrasonic generator module 21 and the electrosurgical/RF generator module 23 can be activated simultaneously. In one example, the ultrasonic generator module 21 is simultaneously activated with a sub-therapeutic RF energy level to measure tissue impedance while, simultaneously, the ultrasonic blade of the end actuator assembly 26 cuts and coagulates the tissue (or vessel). blood) clamped between the clamp elements of the end actuator assembly 26. This feedback can be used, for example, to modify the drive output of the ultrasonic generator module 21. In another example, the ultrasonic generator module 21 can be driven simultaneously to the electrosurgical/RF generator module 23 so that the ultrasonic blade portion of the end actuator assembly 26 is used to cut the damaged tissue while electrosurgical/RF energy is applied to electrode portions of the actuator clamp assembly tip 26 to cauterize the tissue (or blood vessel).
[0080] When generator 20 is activated via the activation mechanism, in one embodiment electrical energy is continuously applied by generator 20 to a stack or array of transducers of the acoustic array. In another embodiment, electrical power is intermittently applied (e.g., pulsed) by generator 20. A phase synchronized circuit in generator control system 20 can monitor feedback from the acoustic assembly. The phase synchronized circuit adjusts the frequency of electrical energy sent by generator 20 to match the resonant frequency of the selected longitudinal vibration mode of the acoustic array. Furthermore, a second feedback circuit in the control system 25 maintains the electrical current supplied to the acoustic assembly at a preselected constant level so as to obtain a substantially constant excursion in the end actuator 18 of the acoustic assembly. In yet another embodiment, a third feedback circuit in control system 25 monitors the impedance between electrodes located in end actuator assembly 26. Although Figures 1 through 9 show a hand-operated ultrasonic surgical instrument, it should be understood that ultrasonic surgical instruments can also be used in robotic applications, for example as described herein, as well as in combinations of manual and robotic applications.
[0081] In the ultrasonic mode of operation, the electrical signal supplied to the acoustic assembly may cause the distal end of the end actuator 18 to vibrate longitudinally in the range of, for example, approximately 20 kHz to 250 kHz. In accordance with various embodiments, the blade 22 may vibrate in the range of about 54 kHz to 56 kHz, for example at about 55.5 kHz. In other embodiments, blade 22 may vibrate at other frequencies including, for example, about 31 kHz or about 80 kHz. The excursion of the blade vibrations can be controlled, for example, by controlling the amplitude of the electrical signal applied to the transducer assembly of the acoustic assembly by the generator 20. As noted above, the activation mechanism of the generator 20 allows a user to activate the generator. 20 so that electrical energy can be supplied continuously or intermittently to the acoustic set. The generator 20 also has an electrical power transmission line for insertion into an electrosurgical unit or a conventional electrical outlet. It is contemplated that the generator 20 may also be powered by a direct current (DC) source, such as a battery. Generator 20 may comprise any suitable generator, such as Model No. GEN04 and/or Model No. GEN11, available from Ethicon Endo-Surgery, Inc.
[0082] Figure 2 is a left perspective view of an exemplary embodiment of the ultrasonic surgical instrument 10, showing the handle assembly 12, the distal rotation assembly 13, the elongated stem assembly 14, and the end actuator assembly. 26. In the illustrated embodiment, the elongated stem assembly 14 comprises a distal end 52 sized to mechanically engage the end actuator assembly 26, and a proximal end 50 that mechanically engages the handle assembly 12 and rotation assembly. 13. The proximal end 50 of the elongated stem assembly 14 is received within the handle assembly 12 and the distal rotation assembly 13. Further details relating to the connections between the elongated stem assembly 14, the grip assembly 12 and the Distal Rotation Assembly 13 are provided in the description of Figures 5 and 7.
[0083] In the illustrated embodiment, the trigger assembly 24 comprises a trigger 32 that works in conjunction with a fixed handle 34. The fixed handle 34 and trigger 32 are ergonomically shaped and adapted to provide a comfortable user interface. The fixed handle 34 is integrally associated with the handle assembly 12. The trigger 32 is able to pivotally move with respect to the fixed handle 34, as explained below in more detail in relation to the operation of the ultrasonic surgical instrument 10. The trigger 32 is able to pivotally move in the direction 33A, towards the fixed handle 34, when the user applies a gripping force against the trigger 32. A spring element 98 (Figure 5) causes the trigger 32 to move in a different direction. hinged shape in direction 33B when user releases grip force against trigger 32.
[0084] In an exemplary embodiment, the trigger 32 comprises an elongated trigger hook 36 which defines an opening 38 between the elongated trigger hook 36 and the trigger 32. The opening 38 is suitably sized to receive, therethrough, one or more of the user's fingers. Trigger 32 may also comprise a resilient portion 32a molded onto trigger substrate 32. Overmolded resilient portion 32a is formed to provide a more comfortable contact surface for controlling trigger 32 in an outward direction 33B. In an exemplary embodiment, the overmolded resilient portion 32a may be disposed over a portion of the elongate trigger hook 36. The proximal surface of the elongate trigger hook 32 remains uncoated or coated with a non-resilient substrate to allow the user to easily slide their fingers in and out of aperture 38. In another embodiment, the trigger geometry forms a fully closed loop which defines an aperture suitably sized to receive, therethrough, one or more of the user's fingers. The fully closed loop trigger may also comprise a resilient portion molded onto the trigger substrate.
[0085] In an exemplary embodiment, the fixed wrist 34 comprises a proximal contact surface 40 and a gripping anchor or concave surface 42. The concave surface 42 rests on the membrane of the hand where the thumb and index finger join. The proximal contact surface 40 has a pistol grip contour that receives the palm of the hand in a normal pistol grip, without rings or openings. The profile curve of the proximal contact surface 40 can be contoured to accommodate or receive the palm. A stabilizing tail 44 is located toward a more proximal portion of the wrist assembly 12. The stabilizing tail 44 may be in contact with the uppermost portion of the webbing portion of the hand, located between the thumb and index finger, to stabilize the handle assembly 12 and make it more controllable.
[0086] In an exemplary embodiment, the key assembly 28 may comprise a toggle key 30. The toggle key 30 may be implemented as a single component with a central pivot 304 located within the handle assembly 12 to eliminate the possibility of simultaneous activation. In an exemplary embodiment, flip-flop 30 comprises a first raised knob 30a and a second raised knob 30b for selecting the power setting of the ultrasonic transducer 16 between a minimum power level (e.g., MIN) and a maximum power level ( for example MAX). In another embodiment, the flip-flop can pivot between a conventional setting and a special setting. Special tuning may allow one or more special programs to be implemented by the device. The flip switch 30 rotates about the center pivot as the first raised knob 30a and second raised knob 30b are actuated. The one or more raised buttons, 30a and 30b, are coupled to one or more arms that move through a small arc and cause the electrical contacts to close or open an electrical circuit to electrically energize or de-energize the ultrasonic transducer 16, so according to the activation of the first or second raised buttons, 30a and 30b. Flip-flop 30 is coupled to generator 20 to control activation of ultrasonic transducer 16. Flip-flop 30 comprises one or more electrical power setting switches for activating ultrasonic transducer 16 in order to define one or more power settings for the ultrasonic transducer 16. The forces required to activate flip-flop 30 are directed substantially towards the concave point 42, thus preventing any tendency of the instrument to rotate in the hand when flip-flop 30 is activated.
[0087] In an exemplary embodiment, the first and second raised buttons, 30a and 30b, are situated over the distal end of the handle assembly 12, so that they can be easily accessed by the user to activate power with a repositioning minimal, or substantially zero, grip, which is adequate to maintain control and maintain focused attention on the surgical site (eg, a monitor in a laparoscopic procedure) during activation of the flip-flop 30. The raised buttons, 30a and 30b, may be configured to go around the side of the wrist assembly 12 to a certain extent, to be more easily accessible to varying finger lengths, and to allow greater freedom of access for activation in uncomfortable positions or for fingers. shorter.
[0088] In the illustrated embodiment, the first raised button 30a comprises a plurality of tactile elements 30c, for example textured protrusions or "protrusions" in the illustrated embodiment, to allow the user to differentiate the first raised button 30a from the second raised button 30b. It will be understood by those skilled in the art that various ergonomic features may be incorporated into the wrist assembly 12. Such ergonomic features are described in US patent application publication No. 2009/055750 entitled "Ergonomic Surgical Instruments", incorporated herein in its entirety, the reference title.
[0089] In an exemplary embodiment, the flip switch 30 can be operated by the user's hand. The user can easily access the first and second raised buttons, 30a and 30b, at any point, while also preventing inadvertent or unintentional activation at any time. The flip switch 30 can be readily operated with a finger to control the power supply to the ultrasonic assembly 16 and/or the ultrasonic assembly 16. For example, the index finger can be used to activate the first contact portion 30a to turn on the 16 ultrasonic assembly at a maximum power level (MAX). The index finger can be used to activate the second contact portion 30b, to turn on the ultrasonic assembly 16 at a minimum power level (MIN). In another embodiment, the flip switch can toggle the instrument 10 between a conventional setting and a special setting. The special setting can allow one or more special programs to be implemented by the instrument 10. The flip-flop 30 can be operated without the user having to look at the first or second raised button, 30a or 30b. For example, the first raised button 30a or the second raised button 30b may comprise a texture or projections for tactilely differentiating between the first and second raised buttons, 30a and 30b, without looking.
[0090] In other embodiments, trigger 32 and/or flip switch 30 can be used to activate electrosurgical/RF generator module 23, either individually or in combination with activation of ultrasonic generator module 21.
[0091] In an exemplary embodiment, the distal rotation assembly 13 is rotatable without limitation in any direction around a longitudinal axis "T". The distal rotation assembly 13 is mechanically engaged with the elongated rod assembly 14. The distal rotation assembly 13 is located on a distal end of the handle assembly 12. The distal rotation assembly 13 comprises a cylindrical hub 46 and a rotary knob 48 formed over hub 46. Hub 46 mechanically engages elongate rod assembly 14. Rotary knob 48 may comprise ridged polymeric features, and may be manipulated by a finger (e.g., an index finger) to rotate the rod assembly. 14. Hub 46 may comprise a material molded onto the main frame to form rotary knob 48. Rotary knob 48 may be overmolded to hub 46. Hub 46 comprises a plug portion 46a which is exposed at the distal end. The plug portion 46a of the hub 46 may contact the surface of a trocar during laparoscopic procedures. The hub 46 may be formed of a rigid durable plastic, such as polycarbonate, to alleviate any friction that may occur between the plug portion 46a and the trocar. Rotary knob 48 may comprise "ribs" or ribs formed by raised ribs 48a and concave portions 48b located between ribs 48a to provide a more precise rotational grip. In an exemplary embodiment, rotary knob 48 may comprise a plurality of splines (e.g., three or more splines). In other embodiments, any suitable number of striations may be used. The rotary knob 48 may be formed from a softer polymeric material overmolded to the rigid plastic material. For example, rotary knob 48 can be formed from malleable, resilient and flexible polymeric materials, including TPE Versaflex® alloys, available from GLS Corporation, for example. This softer overmolded material can provide a better grip and more precise control of the movement of the rotary knob 48. It should be understood that any materials that offer adequate strength for sterilization, are biocompatible, and provide adequate frictional resistance to surgical gloves can be used to form the rotary knob 48.
[0092] In an exemplary embodiment, the handle assembly 12 is formed from two (2) casing portions, or shells, comprising a first portion 12a and a second portion 12b. From the perspective of a user viewing the wrist assembly 12 from the distal end and toward the proximal end, the first portion 12a is considered the right portion, and the second portion 12b is considered the left portion. The first and second portions 12a, 12b each include a plurality of interfaces 69 (Figure 5) sized to mechanically align and engage with each other to form the handle assembly 12 and encircle the internal functional components thereof. Fixed handle 34, which is integrally associated with handle assembly 12, takes shape by assembling the first and second portions 12a and 12b of handle assembly 12. A plurality of additional interfaces (not shown) may be arranged at various points. around the periphery of the first and second portions, 12a and 12b, of the handle assembly 12, for ultrasonic welding purposes, e.g., power steering/deflection points. The first and second portions, 12a and 12b (as well as the other components described below) can be assembled together in any manner known in the art. For example, alignment pins, snap-fit interfaces, tongue and groove interfaces, locking tabs and adhesive doors can all be used, alone or in combination, for mounting purposes.
[0093] In an exemplary embodiment, the elongated rod assembly 14 comprises a proximal end 50 adapted to mechanically engage the wrist assembly 12 and distal rotation assembly 13, and a distal end 52 adapted to mechanically engage the End actuator assembly 26. Elongated stem assembly 14 comprises an outer tubular sheath 56 and a reciprocating tubular actuator member 58 located within the outer tubular sheath 56. The proximal end of the reciprocating tubular actuator member 58 is mechanically engaged with trigger 32 of the handle assembly 12 to move in the direction 60A or 60B in response to the actuation and/or release of the trigger 32. The pivotally movable trigger 32 can generate reciprocating motion along the longitudinal axis "T". Such movement can be used, for example, to actuate the jaws or the clamping mechanism of the end actuator assembly 26. A series of articulations convert the pivotal rotation of the trigger 32 into axial movement of a rocker arm coupled to an actuation mechanism, which controls the opening and closing of the jaws of the clamping mechanism of the end actuator assembly 26. The distal end of the reciprocating tubular actuator element 58 is mechanically engaged with the end actuator assembly 26. In the illustrated embodiment, a distal end of the actuator element The reciprocating tube 58 is mechanically engaged with a gripper arm assembly 64, which is pivotable about a pivot point 70, to open and close the gripper arm assembly 64 in response to actuation and/or release of trigger 32. For example, in the illustrated embodiment, the gripper arm assembly 64 is capable of moving in the direction 62A from an open position to a closed position, around a pivot point 70 when trigger 32 is pulled in direction 33A. Gripper arm assembly 64 is capable of moving in direction 62B from a closed position to an open position around pivot point 70 when trigger 32 is released or pushed out in direction 33B.
[0094] In an exemplary embodiment, the end actuator assembly 26 is connected to the distal end 52 of the elongate rod assembly 14 and includes a gripper arm assembly 64 and a blade 66. End actuator 26 are formed by gripper arm assembly 64 and blade 66. Blade 66 is ultrasonic actuated, and is acoustically coupled to ultrasonic transducer 16. Trigger 32 on handle assembly 12 is ultimately connected to a drive assembly with which it mechanically cooperates to obtain movement of the gripper arm assembly 64. Squeezing trigger 32 in direction 33A moves gripper arm assembly 64 in direction 62A from an open position in which the gripper assembly tweezers arm 64 and blade 66 are arranged in a spaced relationship to each other, for a pinched or closed position, in which the tweezer arm assembly 64 and blade 66 cooperate to grip tissue between the same. The gripper arm assembly 64 may comprise a gripper block 69 for gripping tissue between the blade 66 and the gripper arm 64. Releasing the trigger 32 in the 33B direction moves the gripper arm assembly 64 in the 62B direction from a closed relationship to an open position, in which the gripper arm assembly 64 and blade 66 are arranged in spaced relationship with respect to each other.
[0095] The proximal portion of the wrist assembly 12 comprises a proximal opening 68 for receiving a distal end of the ultrasonic assembly 16. The ultrasonic assembly 16 is inserted into the proximal opening 68, and is mechanically engaged with the elongated rod assembly 14.
[0096] In an exemplary embodiment, the elongated trigger hook portion 36 of the trigger 32 provides a longer trigger lever, with a shorter extension and rotation stroke. The longer lever of the elongated trigger hook 36 allows the user to employ multiple fingers within the opening 38 to operate the elongated trigger hook 36 and cause the trigger 32 to revolve in the direction 33B to open the jaws of the trigger assembly. end 26. For example, user can insert three fingers (e.g., middle, ring and little fingers) into opening 38. Use of multiple fingers allows the surgeon to exert greater entry forces on trigger 32 and trigger hook 36 to activate the end actuator assembly 26. The shorter extension and rotation stroke creates a more comfortable grip when closing or squeezing trigger 32 in direction 33A, or when opening trigger 32 in the opening motion outward in the 33B direction, lessening the need to extend the fingers further out. This substantially decreases hand fatigue and strain associated with the outward opening movement of trigger 32 in direction 33B. The outward opening movement of the trigger may be spring-assisted by spring member 98 (Figure 5) to help alleviate fatigue. The force of the opening spring is sufficient to aid in ease of opening, but not strong enough to adversely affect the tactile feedback of tissue tension during dissection propagation.
[0097] For example, during a surgical procedure, the index finger can be used to control the rotation of the elongated stem assembly 14 so as to position the jaws of the end actuator assembly 26 in a proper orientation. The middle finger and/or the other smaller fingers can be used to squeeze the trigger 32 and clamp the tissue between the jaws. Once the jaws are situated in the desired position and have grasped the tissue, the index finger can be used to activate the flip switch 30 in order to adjust the energy level of the ultrasonic transducer 16 to treat the tissue. Once the tissue has been treated, the user can release the trigger 32 by pushing outward in the distal direction against the elongated trigger hook 36 with the middle finger and/or smaller fingers to open the jaws of the actuator assembly. 26. This basic procedure can be performed without the user having to adjust their grip on the wrist assembly 12.
[0098] Figures 3 to 4 illustrate the connection of the elongated rod assembly 14 to the end actuator assembly 26. As previously described, in the illustrated embodiment the end actuator assembly 26 comprises a gripper arm assembly 64 and a blade 66 for forming the jaws of the clamping mechanism. Blade 66 may be an ultrasound actuatable blade, acoustically coupled to ultrasonic transducer 16. Trigger 32 is mechanically connected to a drive assembly. Together, the trigger 32 and actuation assembly mechanically cooperate to move the gripper arm assembly 64 to an open position in the direction 62A, wherein the gripper arm assembly 64 and blade 66 are arranged in spaced apart relationship with respect to each other. to the other, and into a pinched or closed position in direction 62B, wherein the pinch arm assembly 64 and blade 66 cooperate to secure tissue therebetween. The gripper arm assembly 64 may comprise a gripper block 69 for gripping tissue between the blade 66 and the gripper arm 64. The distal end of the reciprocating tubular actuator member 58 is mechanically engaged with the end actuator assembly 26. In the illustrated embodiment, a distal end of the reciprocating tubular actuator member 58 is mechanically engaged with the gripper arm assembly 64, which is pivotable about the pivot point 70, to open and close the gripper arm assembly 64 in response to actuation and /or release of trigger 32. For example, in the illustrated embodiment, the gripper arm assembly 64 is capable of moving from an open position to a closed position in the direction 62B, around a pivot point 70, when the trigger 32 is pulled in direction 33A. The gripper arm assembly 64 is capable of moving from a closed position to an open position in direction 62A, around pivot point 70, when trigger 32 is released or pushed out in direction 33B.
[0099] As previously discussed, the clamp arm assembly 64 may comprise electrodes electrically coupled to the electrosurgical/RF generator module 23 to receive therapeutic and/or sub-therapeutic energy, wherein electrosurgical/RF energy can be applied to the electrodes, either simultaneously or not simultaneously, with the ultrasonic energy being applied to the blade 66. These energy activations can be applied in any suitable combinations to obtain a desired effect on the tissue, in cooperation with an algorithm or other control logic.
[00100] Figure 5 is an exploded view of the ultrasonic surgical instrument 10 shown in Figure 2. In the illustrated embodiment, the exploded view shows the internal elements of the wrist assembly 12, the wrist assembly 12, the distal rotation assembly 13, the key assembly 28, and the elongate shank assembly 14. In the illustrated embodiment, the first and second portions, 12a and 12b, mate to form the handle assembly 12. Each of the first and second portions, 12a and 12b, comprises a plurality of interfaces 69 sized to align and mechanically engage each other to form the handle assembly 12 and contain the internal functional components of the ultrasonic surgical instrument 10. The rotary knob 48 is mechanically engaged with the outer tubular sheath. 56, so that it can be rotated in the circular direction 54 up to 360°. Outer tubular sheath 56 is located over reciprocating tubular actuator member 58, which is mechanically engaged with, and retained within, handle assembly 12 by a plurality of coupler elements 72. Coupler elements 72 may comprise a ring seal 72a, a tube collar cap 72b, a distal washer 72c, a proximal washer 72d and a threaded tube collar 72e. The reciprocating tubular actuator member 58 is located within a reciprocating rocker arm 84 which is retained between the first and second portions 12a and 12b of the handle assembly 12. Rocker arm 84 is part of a reciprocating rocker arm assembly 88 A series of articulations convert the pivotal rotation of the elongated trigger hook 32 into the axial movement of the reciprocating rocker 84, which controls the opening and closing of the jaws of the end actuator assembly clamping mechanism 26 at the distal end of the ultrasonic surgical instrument. 10. In an exemplary embodiment, a four-link design offers mechanical advantage over a relatively short span of rotation, for example.
[00101] In an exemplary embodiment, an ultrasonic transmitting waveguide 78 is disposed within the reciprocating tubular actuator element 58. The distal end 52 of the ultrasonic transmitting waveguide 78 is acoustically coupled (e.g., directly or indirectly mechanically coupled ) to the blade 66, and the proximal end 50 of the ultrasonic transmitting waveguide 78 is received within the handle assembly 12. The proximal end 50 of the ultrasonic transmitting waveguide 78 is adapted to acoustically mate with the distal end. of the ultrasonic transducer 16, as discussed in more detail below. The ultrasonic transmission waveguide 78 is isolated from the other elements of the elongate rod assembly 14 by means of a protective sheath 80 and a plurality of insulating elements 82, such as silicone rings. The outer tubular sheath 56, the reciprocating tubular actuator element 58 and the ultrasonic transmission waveguide 78 are mechanically engaged by a pin 74. The key assembly 28 comprises the flip switch 30 and electrical elements 86a,b for electrically energizing the transducer ultrasonic 16, according to the activation of the first or second raised buttons, 30a or 30b.
[00102] In an exemplary embodiment, the outer tubular sheath 56 isolates the wearer or patient from the ultrasonic vibrations of the ultrasonic transmitting waveguide 78. The outer tubular sheath 56 generally includes a hub 76. The outer tubular sheath 56 is threaded onto the distal end of the wrist assembly 12. The ultrasonic transmission waveguide 78 extends through the opening of the outer tubular sheath 56, and the insulating elements 82 insulate the ultrasonic transmitting waveguide 24 from the outer tubular sheath 56. The sheath outer tube 56 may be attached to waveguide 78 with pin 74. The hole for receiving pin 74 in waveguide 78 may nominally occur in a displacement node. The waveguide 78 may be threaded or fitted into the handle assembly 12 of the handle by means of a captive screw. Flat portions on hub 76 may allow the assembly to be torqued to a required level. In an exemplary embodiment, the hub portion 76 of the outer tubular sheath 56 is preferably constructed of plastic, and the tubular elongate portion of the outer tubular sheath 56 is made of stainless steel. Alternatively, the ultrasonic transmitting waveguide 78 may comprise polymeric material surrounding it for isolation against external contact.
[00103] In an exemplary embodiment, the distal end of the ultrasonic transmission waveguide 78 may be coupled to the proximal end of the blade 66 by an internal threaded connection, preferably at or near an antinode. It is contemplated that the blade 66 may be attached to the ultrasonic transmission waveguide 78 by any suitable means, such as a welded joint or the like. While the blade 66 may be removable from the ultrasonic transmission waveguide 78, it is also contemplated that the single-element end actuator (e.g. blade 66) and the ultrasonic transmission waveguide 78 may be formed as one. single unitary part.
[00104] In an exemplary embodiment, the trigger 32 is coupled to a hinge mechanism to convert the rotary movement of the trigger 32, in directions 33A and 33B, into the linear movement of the reciprocating tubular actuator element 58, in the corresponding directions 60A and 60B. Trigger 32 comprises a first set of flanges 98 with openings formed therein for receiving a first rocker pin 92a. The first rocker pin 92a is also positioned through a set of openings formed in the distal end of the rocker arm 84. The trigger 32 also comprises a second set of flanges 96 for receiving a first end 92a of a link 92. Trigger pin 90 is received in openings formed in link 92 and second set of flanges 96. Trigger pin 90 is received in openings formed in link 92 and second set of flanges 96, and is adapted to be coupled to first and second portions 12a and 12b of handle assembly 12 to form a pivot point for trigger 32. A second end 92b of link 92 is received in a slot 384 formed at a proximal end of rocker arm 84, and is retained in inside by a second rocker pin 94b. As trigger 32 is pivotally pivoted about pivot point 190 formed by trigger pin 90, rocker arm translates horizontally along longitudinal axis "T" in a direction indicated by arrows 60A,B.
[00105] Figure 8 illustrates an exemplary embodiment of an ultrasonic surgical instrument 10. In the illustrated embodiment, a cross-sectional view of the ultrasonic transducer 16 is shown within a partial cutaway view of the wrist assembly 12. An exemplary embodiment of the ultrasonic surgical instrument 10 comprises the ultrasonic signal generator 20 coupled to the ultrasonic transducer 16, comprising a handle housing 99 and an end actuator assembly 26 with one or more ultrasonic actuatable elements. As previously discussed, the end actuator assembly 26 comprises the ultrasound actuatable blade 66 and the gripper arm 64. The ultrasonic transducer 16, which is known as a "stack of Langevin", generally includes a transduction portion 100 , a first resonator or hind bell portion 102, and a second resonator or fore bell portion 104, as well as auxiliary components. The total construction of these components consists of a resonator. The ultrasonic transducer 16 is preferably an integer of half the wavelengths (nA/2, where "n" is any positive integer; for example, n = 1, 2, 3...) in length, as will be described in more detail later. An acoustic assembly 106 includes the ultrasonic transducer 16, a nose cone 108, a speed transformer 118 and a surface 110.
[00106] In an exemplary embodiment, the distal end of the hind bell 102 is connected to the proximal end of the transducing portion 100, and the proximal end of the fore bell 104 is connected to the distal end of the transducing portion 100. The fore bell 104 and The hind bell 102 has a length determined by a number of variables, including a thickness of the transducing portion 100, the density and modulus of elasticity of the material used to manufacture the hind bell 102 and the fore bell 22, and the frequency of resonance of the ultrasonic transducer 16. The anterior bell 104 may be tapered inward from its proximal end to its distal end to amplify the amplitude of the ultrasonic vibration like the speed transformer 118 or, alternatively, may have no amplification at all. A suitable vibrational frequency range may be from about 20 Hz to 32 kHz, and a well-suited vibrational frequency range may be from about 30 to 10 kHz. A suitable operating vibrational frequency might be approximately 55.5 kHz, for example.
[00107] In an exemplary embodiment, the piezoelectric elements 112 may be manufactured from any suitable material such as, for example, lead zirconate-titanate, lead methaniobate, lead titanate, barium titanate or other piezoelectric ceramic material. . Each of the positive electrodes 114, negative electrodes 116 and piezoelectric elements 112 have a hole extending through the center. Positive and negative electrodes 114 and 116 are electrically coupled to wires 120 and 122, respectively. Wires 120 and 122 are enclosed within cable 22 and are electrically connectable to ultrasonic signal generator 20.
[00108] The ultrasonic transducer 16 of the acoustic assembly 106 converts the electrical signal from the ultrasonic signal generator 20 into mechanical energy that primarily results in a standing acoustic wave of longitudinal vibratory motion from the ultrasonic transducer 16 and the blade portion 66 of the assembly of 26 end actuator at ultrasonic frequencies. In another embodiment, the vibrating motion of the ultrasonic transducer may act in a different direction. For example, the vibratory motion may comprise a local longitudinal component with a more complex motion of the tip of the elongated rod assembly 14. A suitable generator is available under model number GEN11 from Ethicon Endo-Surgery, Inc., of Cincinnati, Ohio, USA. When the acoustic assembly 106 is energized, a standing wave of vibratory motion is generated therethrough. The ultrasonic surgical instrument 10 is designed to operate at a resonance such that an acoustic standing wave pattern of predetermined amplitude is produced. The amplitude of the vibratory motion at any point along the acoustic array 106 depends on the location along the acoustic array 106 at which the vibratory motion is measured. A passage through a minimum or zero value in the standing wave of vibrating motion is generally termed a node (i.e. where motion is minimal), and a maximum or peak of local absolute value in the standing wave is generally termed an antinode (e.g. , where the local movement is maximum). The distance between an antinode and its nearest node is one-quarter of the wavelength (A/4).
[00109] The wires 120 and 122 transmit an electrical signal from the ultrasonic signal generator 20 to the positive electrodes 114 and negative electrodes 116. The piezoelectric elements 112 are energized by the electrical signal provided from the ultrasonic signal generator 20 in response to a actuator 224, such as a foot switch, for example, to produce an acoustic standing wave in the acoustic assembly 106. The electrical signal causes disturbances in the piezoelectric elements 112 in the form of small repeated displacements, resulting in large alternating compression and tension forces. inside the material. The repeated small displacements cause the piezoelectric elements 112 to continuously expand and contract along the geometric axis of the voltage gradient, producing longitudinal waves of ultrasonic energy. The ultrasonic energy is transmitted through the acoustic assembly 106 to the blade portion 66 of the end actuator assembly 26 via a transmission component or an ultrasonic transmitting waveguide portion 78 of the elongate stem assembly 14.
[00110] In an exemplary embodiment, in order for the acoustic assembly 106 to supply power to the blade portion 66 of the end actuator assembly 26, all components of the acoustic assembly 106 must be acoustically coupled to the blade 66. The distal end of the ultrasonic transducer 16 may be acoustically coupled, on surface 110, to the proximal end of ultrasonic transmission waveguide 78 via a threaded connection, such as a stud 124.
[00111] In an exemplary embodiment, the components of the acoustic array 106 are preferably acoustically tuned so that the length of any array is an integer of half the wavelengths (nΔ/2), where the length of wave A is the wavelength of a preselected or functional longitudinal vibration drive frequency fd of the acoustic assembly 106. It is also contemplated that the acoustic assembly 106 may incorporate any suitable arrangement of acoustic elements.
[00112] In an exemplary embodiment, the blade 66 may have a length substantially equal to an integral multiple of half the wavelengths of the system (nΔ/2). A distal end of blade 66 may be disposed adjacent an antinode to provide maximum longitudinal excursion of the distal end. When the transducer assembly is energized, the distal end of blade 66 can be configured to move in the range of, for example, approximately 10 to 500 microns from peak to peak, and preferably in the range of about 30 to 64 microns. at a predetermined vibrational frequency of 55 kHz, for example.
[00113] In an exemplary embodiment, the blade 66 may be coupled to the ultrasonic transmission waveguide 78. The blade 66 and the ultrasonic transmission waveguide 78, as illustrated, are formed as a single unit construction from a material suitable for transmitting ultrasonic energy. Examples of such materials include Ti6Al4V (a titanium alloy that includes aluminum and vanadium), aluminum, stainless steel or other suitable materials. Alternatively, the blade 66 may be separable (and of different composition) from the ultrasonic transmission waveguide 78, and be coupled, for example, by a stud, solder, glue, quick connect or other suitable known methods. The length of the ultrasonic transmitting waveguide 78 may be substantially equal to an integral number of half the wavelengths (nδ/2), for example. The ultrasonic transmission waveguide 78 may preferably be manufactured from a solid core rod constructed of material suitable for efficient propagation of ultrasonic energy, such as the titanium alloy discussed above (i.e., Ti6Al4V) or any alloy suitable aluminum, or other alloys, for example.
[00114] In an exemplary embodiment, the ultrasonic transmission waveguide 78 comprises an attachment column projecting longitudinally at a proximal end, to be coupled to the surface 110 of the ultrasonic transmission waveguide 78 by means of a threaded connection. , such as stud 124. Ultrasonic transmission waveguide 78 may include a plurality of stabilizing silicone rings or malleable supports 82 (Figure 5) positioned at a plurality of nodes. Silicone rings 82 dampen unwanted vibration and isolate ultrasonic energy from an outer protective sheath 80 (Figure 5), ensuring ultrasonic energy flow in a longitudinal direction to the distal end of blade 66 with maximum efficiency.
[00115] Figure 9 illustrates an exemplary embodiment of proximal rotation assembly 128. In the illustrated embodiment, proximal rotation assembly 128 comprises proximal rotary knob 134 inserted over cylindrical hub 135. Proximal rotary knob 134 comprises a plurality of projections radial lugs 138 that are received in corresponding slots 130 formed on a proximal end of the cylindrical hub 135. The proximal rotary knob 134 defines an opening 142 for receiving the distal end of the ultrasonic transducer 16. The radial projections 138 are formed of a flexible polymeric material and define a diameter that is undersized with respect to the outer diameter of the ultrasonic transducer 16 to create a frictional interference fit with the distal end of the ultrasonic transducer 16. The polymeric radial projections 138 project radially into the opening 142 to form "snap-in" ribs that securely hold the outer casing of the ultrasonic transducer 16. Therefore, the proximal rotary knob 134 securely holds the ultrasonic transducer 16.
[00116] The distal end of the cylindrical hub 135 comprises a circumferential shoulder 132 and a circumferential bearing surface 140. The circumferential flange engages a groove formed in the housing 12, and the circumferential bearing surface 140 engages the housing 12. Therefrom In this way, the cylindrical hub 135 is mechanically retained within the two shell portions (not shown) of the shell 12. The circumferential rim 132 of the cylindrical hub 135 is located or "trapped" between the first and second shell portions, 12a and 12b, and is free to rotate in place within the groove. The circumferential bearing surface 140 rests against internal portions of the housing to aid in proper rotation. In this way, the cylindrical hub 135 is free to rotate in place within the housing. The user interacts with the splines 136 formed on the proximal rotary knob 134 with a finger or thumb to rotate the cylindrical hub 135 within the housing 12.
[00117] In an exemplary embodiment, the cylindrical hub 135 may be formed of a durable plastic, such as polycarbonate. In an exemplary embodiment, the cylindrical hub 135 may be formed of a siliconized polycarbonate material. In an exemplary embodiment, the proximal rotary knob 134 may be formed from malleable, resilient, and flexible polymeric materials, including Versaflex® TPE alloys, available from GLS Corporation. Proximal rotary knob 134 may be formed from elastomeric materials, thermoplastic rubber known as Santoprene®, other thermoplastic vulcanizates (TPVs) or elastomers, for example. The modalities, however, are not limited in this context.
[00118] Figure 10 illustrates an exemplary embodiment of a surgical system 200 that includes a surgical instrument 210 with single element end actuator 278. System 200 may include a transducer assembly 216 coupled to end actuator 278 and a sheath 256 positioned around the proximal portions of the end actuator 278 as shown. Transducer assembly 216 and end actuator 278 may function in a manner similar to that of transducer assembly 16 and end actuator 18 described above to produce ultrasonic energy which can be transmitted to tissue via blade 226'.
[00119] Figures 11 to 18C illustrate various surgical instrument modalities that use therapeutic and/or sub-therapeutic levels of electrical energy to treat and/or destroy tissue, or to provide feedback to generators (eg, electrosurgical instruments). The modalities of Figures 11 to 18C are adapted for use in a manual or hand-operated mode, although electrosurgical instruments can also be used in robotic applications. Figure 11 is a perspective view of an exemplary embodiment of a surgical instrument system 300 comprising an electrically powered surgical instrument 310. Electrosurgical instrument 310 may comprise a proximal handle 312, a working end, or an end actuator. 326, and an introducer or elongate rod 314 disposed therebetween.
[00120] The Electrosurgical System 300 can be configured to deliver energy, such as electrical energy, ultrasonic energy, thermal energy, or any combination thereof, to a patient's tissues, either independently or simultaneously as described, for example, with respect to Figure 1 , for example. In an exemplary embodiment, the electrosurgical system 300 includes a generator 320 in electrical communication with the electrosurgical instrument 310. The generator 320 is connected to the electrosurgical instrument 310 via a suitable transmission medium, such as a cable 322. In an exemplary embodiment, generator 320 is coupled to a controller, such as a control unit 325, for example. In various embodiments, control unit 325 may be formed integrally with generator 320, or may be provided as a separate circuit module or device electrically coupled to generator 320 (shown in dashed line to illustrate this option). While in the embodiment disclosed herein, generator 320 is shown separate from electrosurgical instrument 310, in an exemplary embodiment, generator 320 (and/or control unit 325) may be integrally formed with electrosurgical instrument 310 to form a unitary electrosurgical system 300, where a battery located within the electrosurgical instrument 310 is the power source, and a circuit coupled to the battery produces the appropriate electrical energy, ultrasonic energy, or thermal energy. An example like this is described later in this document with reference to Figures 17 to 18C.
[00121] The generator 320 may comprise an input device 335 located on a front panel of the generator console 320. The input device 335 may comprise any suitable device that generates signals suitable for programming the operation of the generator 320, such as a keyboard or a gateway, for example. In an exemplary embodiment, multiple electrodes on the first jaw 364A and the second jaw 364B may be coupled to generator 320. Cable 322 may comprise multiple electrical conductors for applying electrical energy to positive (+) and negative (-) electrodes of the instrument. 310. Control unit 325 can be used to activate generator 320, which can serve as a source of electricity. In various embodiments, generator 320 may comprise an RF source, an ultrasonic source, a direct current source, and/or any other suitable type of electrical energy source, for example, that can be activated independently or simultaneously.
[00122] In various embodiments, the electrosurgical system 300 may comprise at least one supply conductor 331 and at least one return conductor 333, wherein current may be supplied to the electrosurgical instrument 300 via the supply conductor 331, and wherein current may flow back to generator 320 via return conductor 333. In various embodiments, supply conductor 331 and return conductor 333 may comprise insulated metallic wires and/or any other suitable type of conductor. In certain embodiments, as described below, the supply conductor 331 and the return conductor 333 may be contained within, and/or may comprise, the cable 322 extending between, or at least partially between, the generator 320 and the end actuator 326 of the electrosurgical instrument 310. In either case, the generator 320 can be configured to apply a sufficient voltage differential between the supply conductor 331 and the return conductor 333 so that sufficient current can be supplied to the actuator. end 110.
[00123] Figure 12 is a side view of an exemplary embodiment of handle 312 of surgical instrument 310. In Figure 12, handle 312 is shown with half of a first handle body 312A (see Figure 11) removed to illustrate various components within the second handle body 312B. The handle 312 may comprise a lever arm 321 (e.g., a trigger) which can be pulled along a path 33. The lever arm 321 may be coupled to an axially movable member 378 (Figures 13 to 16) disposed inside the elongated shaft 314 by a shuttle 384 operatively engaged with an extension 398 of the lever arm 321. The shuttle 384 may additionally be connected to a biasing device, such as a spring 388, which may also be connected to the second handle body 312B, to bias the shuttle 384 and therefore the axially movable element 378 in a proximal direction, thereby inducing the jaws 364A and 364B to an open position, as seen in Figure 11. Further, with reference to the Figures 11 through 12, a locking member 190 (see Figure 12) may be moved by a locking key 328 (see Figure 11) between a locked position, where the shuttle 384 is substantially prevented from moving distally, as illustrated, and an unlocked position, where the shuttle 384 may be allowed to move freely in the distal direction, towards the elongated shaft 314. The handle 312 may be any type of pistol grip, or other type of handle known in the art. , which is configured to have levers, triggers or actuation sliding elements to actuate the first jaw 364A and the second jaw 364B. Elongate rod 314 may have a cylindrical or rectangular cross section, for example, and may comprise a thin-walled tubular sleeve extending from handle 312. Elongate rod 314 may include a hole extending therethrough to carrying actuator mechanisms, for example the axially movable member 378, to drive the jaws and to carry electrical conductors for supplying electrical power to electrosurgical components of the end actuator 326.
[00124] The end actuator 326 can be adapted to capture and transection tissue, and to simultaneously cauterize the captured tissue with the controlled application of energy (eg, RF energy). The first jaw 364A and the second jaw 364B may close to thereby capture, or interact with, tissue around a longitudinal axis "T" defined by the axially movable member 378. The first jaw 364A and the second jaw 364B may also apply compression to the tissue. In some embodiments, the elongated rod 314, together with the first jaw 364A and the second jaw 364B, can be rotated a full 360°, as shown by arrow 196 (see Figure 11), relative to handle 312. For example, a rotary knob 348 may be able to rotate about the longitudinal axis of shank 314, and may be coupled to stem 314 such that rotation of knob 348 causes corresponding rotation of stem 314. The first jaw 364A and the second jaw 364B may remain openable and/or closeable while being rotated.
[00125] Figure 13 illustrates a perspective view of an exemplary embodiment of end actuator 326 with jaws 364A and 364B open, while Figure 14 illustrates a perspective view of an exemplary embodiment of end actuator 326 with jaws 364A and 364B closed. As noted above, end actuator 326 may comprise first upper jaw 364A and second lower jaw 364B, which may be straight or curved. Each of the first jaw 364A and the second jaw 364B may comprise an elongated slot or groove, 362A and 362B, respectively, disposed outwardly along their respective central portions. Additionally, each of the first jaw 364A and second jaw 364B may have tissue gripping elements, such as teeth 363, disposed in the inner portions of the first jaw 364A and second jaw 364B. The first jaw 364A may comprise a first upper jaw body 200A with a first outwardly facing upper surface 202A and a first power supply upper surface 365A. The second jaw 364B may comprise a second lower jaw body 200B with an outwardly facing second lower surface 202B and a second power supply lower surface 365B. Both the first power supply surface 365A and the second power supply surface 365B may extend in a "U" shape around the distal end of the end actuator 326.
[00126] The lever arm 321 of the handle 312 (Figure 12) can be adapted to actuate the axially movable element 378, which can also function as a jaw closing mechanism. For example, axially movable member 378 may be biased distally as lever arm 321 is pulled proximally along path 33 via shuttle 384, as shown in Figure 12 and discussed above.
[00127] Figure 15 is a perspective view of an exemplary embodiment of the axially movable element 378 of the surgical instrument 310. The axially movable element 378 may comprise one or more parts but, in any case, may be movable or translatable with respect to the axially movable element 378. elongated rod 314 and/or jaws 364A and 364B. Furthermore, in at least one exemplary embodiment, the axially movable member 378 may be produced from precipitation hardened 17-4 stainless steel. The distal end of the axially movable member 378 may comprise a flanged "i-profile" configured to slide within the channels 362A and 362B in the jaws 364A and 364B. The axially movable member 378 is slidable within the channels 362A and 362B to open and close the first jaw 364A and the second jaw 364B. The distal end of the axially movable member 378 may also comprise an upper flange or "C" shaped portion 378A, and a lower flange or "C" shaped portion 378B. Flanges 378A and 378B, respectively, define inner cam surfaces 367A and 367B for engagement with outwardly facing surfaces of first jaw 364A and second jaw 364B. The opening and closing of jaws 364A and 364B can apply very high compressive forces to the fabric through the use of cam mechanisms that may include the movable "i-profile" of the axially movable element 378, and outward facing surfaces. , 369A and 369B, of jaws 364A and 364B.
[00128] More specifically, now referring to Figures 13 through 15, collectively, the inner cam surfaces 367A and 367B of the distal end of the axially movable member 378 may be adapted to slidably interact with the first outwardly facing surface 369A and the second outwardly facing surface 369B of the first jaw 364A and second jaw 364B, respectively. Channel 362A within first jaw 364A and channel 362B within second jaw 364B may be sized and configured to accommodate movement of axially movable member 378, which may comprise a tissue cutting member 371, for example, comprising a sharp distal edge. Figure 14, for example, shows the distal end of the axially movable element 378 advanced at least partially through channels 362A and 362B (Figure 13). Advancement of axially movable member 378 can close end actuator 326 from the open configuration shown in Figure 13. In the closed position shown in Figure 14, the first upper jaw 364A and second lower jaw 364B define a gap or a dimension D between the first power supply surface 365A and the second power supply surface 365B of the first jaw 364A and second jaw 364B, respectively. In various embodiments, dimension D may be equal to from about 0.01 mm to about 1.0 mm (from about 0.0005" to about 0.040"), for example, and in some embodiments, between about 0.03 mm to about 0.25 mm (from about 0.001" to about 0.010"), for example. In addition, the edges of the first power supply surface 365A and the second power supply surface 365B may be rounded to prevent tissue dissection.
[00129] Figure 16 is a sectional view of an exemplary embodiment of the end actuator 326 of the surgical instrument 310. The interacting or tissue contacting surface 365B of the lower jaw 364B is adapted to supply energy to the fabric, at least in part, through a conductive-resistive matrix, such as a variable resistive positive temperature coefficient (PTC) body, as discussed in more detail below. At least one of the upper and lower jaws, 364A and 364B, may have at least one electrode 373 configured to deliver power from generator 320 to captured tissue. The interacting or tissue contacting surface 365A of the upper jaw 364A may bear a similar conductive-resistive matrix (i.e. a PTC material) or, in some embodiments, the surface may be a conductive electrode or an insulating layer, for example. Alternatively, the jaw engagement surfaces may bear any of the power delivery components disclosed in US Patent No. 6,773,409, filed October 22, 2001 entitled "ELECTROSURGICAL JAW STRUCTURE FOR CONTROLLED ENERGY DELIVERY", the description of which is here incorporated, by way of reference, in its entirety.
[00130] Each of the first power supply surface, 365A, and the second power supply surface, 365B, may be in electrical communication with the generator 320. The first power supply surface 365A and the second power supply surface 365B power supplies may be configured to contact tissue and provide the captured tissue with electrosurgical energy that is adapted to seal or cauterize the tissue. Control unit 325 regulates electrical power supplied by electrical generator 320 which in turn supplies electrosurgical power to first power supply surface 365A and second power supply surface 365B. Power supply may be initiated by an activation button 328 (Figure 12) operatively engaged with lever arm 321 and in electrical communication with generator 320 via cable 322. In an exemplary embodiment, electrosurgical instrument 310 may be powered by the generator 320 via a foot switch 329 (Figure 11). When actuated, foot switch 329 drives generator 320 to provide electrical power to end actuator 326, for example. Control unit 325 can regulate the power generated by generator 320 during activation. While the 329 foot switch may be suitable under many circumstances, other suitable types of switches may be used.
[00131] As mentioned above, electrosurgical energy supplied by electrical generator 320 and regulated or otherwise controlled by control unit 325 may comprise radio frequency (RF) energy, or other suitable forms of electrical energy. Additionally, the opposing first and second power supply surfaces, 365A and 365B, may feature resistive variable positive temperature coefficient (PTC) bodies, which are in electrical communication with generator 320 and control unit 325. Additional details regarding electrosurgical end actuators, jaw closure mechanisms, and electrosurgical power delivery surfaces are described in the following patents and published patent applications: US Patent Nos. 7,087,054, 7,083,619, 7,070,597, 7,041,102 , 7,011,657, 6,929,644, 6,926,716, 6,913,579, 6,905,497, 6,802,843, 6,770,072, 6,656,177, 6,533,784 and 6,500,312, and patent application publications nos. 2010/0036370 and 2009/0076506, all of which are incorporated herein by reference in their entirety, and made part of this descriptive report.
[00132] In an exemplary embodiment, the generator 320 may be implemented in the form of an electrosurgical unit (ESU) capable of providing sufficient power to perform bipolar electrosurgery using radio frequency (RF) energy. In an exemplary embodiment, the ESU may be an ERBE ICC 350 bipolar device, available from ERBE USA, Inc. of Marietta, Georgia, USA. In some embodiments, such as for bipolar electrosurgery applications, a surgical instrument with an active electrode and a return electrode may be used, where the active electrode and the return electrode may be positioned against, adjacent to, and/or in electrical communication with. , the tissue to be treated so that current can flow from the active electrode, through the positive temperature coefficient (PTC) bodies, and to the return electrode through the tissue. In various embodiments, therefore, the electrosurgical system 300 may comprise a delivery path and a return path, wherein the captured tissue being treated completes, or closes, the circuit. In an exemplary embodiment, generator 320 can be a monopolar RF ESU and electrosurgical instrument 310 can comprise a monopolar end actuator 326 in which one or more active electrodes are integrated. For such a system, the generator 320 may require a return block in close contact with the patient, at a location distant from the surgical site, and/or other suitable return trajectory. The return pad may be cabled to the generator 320. In other embodiments, the operator 20 may apply subtherapeutic levels of RF energy for the purpose of assessing tissue conditions and providing feedback to the electrosurgical system 300. This feedback can be used to control the therapeutic RF energy output of the 310 electrosurgical instrument.
[00133] During the operation of the electrosurgical instrument 300, the user typically clamps the tissue, applies energy to the captured tissue to form a cautery or seal (e.g., by pressing button 328 and/or foot pedal 216), and then , inserts a tissue cutting element 371, located at the distal end of the axially movable element 378, through the captured tissue. In accordance with various embodiments, the translation of the axial movement of the axially movable element 378 may be regulated or otherwise controlled to assist in driving the axially movable element 378 at a suitable travel speed. By controlling the travel speed, the likelihood that the captured tissue has been properly and functionally cauterized prior to transection with the 371 cutting element increases.
[00134] Figure 17 is a perspective view of an exemplary embodiment of a surgical instrument system comprising an electrically powered cordless surgical instrument 410. The electrosurgical system is similar to the electrosurgical system 300. The electrosurgical system can be configured to deliver energy, such as electrical energy, ultrasonic energy, thermal energy, or any combination thereof, to a patient's tissues, either independently or simultaneously as described, for example, in relation to Figures 1 and 11. The electrosurgical instrument may use the actuator 326 and the elongated stem 314 described herein in conjunction with a wireless proximal handle 412. In an exemplary embodiment, the handle 412 includes a generator circuit 420 (see Figure 18A). Generator circuit 420 performs a function substantially similar to that of generator 320. In an exemplary embodiment, generator circuit 420 is coupled to a controller, such as a control circuit. In the illustrated embodiment, the control circuit is integrated with the generator circuit 420. In other embodiments, the control circuit may be separate from the generator circuit 420.
[00135] In an exemplary embodiment, various electrodes on end actuator 326 (including jaws 364A and 364B thereof) may be coupled to generator circuit 420. Control circuit may be used to activate generator 420, which may serve as a source of electricity. In various embodiments, generator 420 may comprise an RF source, an ultrasonic source, a direct current source, and/or any other suitable type of electrical power source, for example. In an exemplary embodiment, a button 328 may be used to activate the generator circuit 420 so as to supply power to end actuators 326 and 326.
[00136] Figure 18A is a side view of an exemplary embodiment of the handle 412 of the cordless surgical instrument 410. In Figure 18A, the handle 412 is shown with half of a first handle body removed to illustrate various components within the second. handle body 434. Handle 412 may comprise a lever arm 424 (e.g., a trigger) that can be pulled along a path 33 about a pivot point. Lever arm 424 may be coupled to an axially movable member 478 disposed within the elongate rod 314 by a shuttle operatively engaged with an extension of lever arm 424. In an exemplary embodiment, lever arm 424 defines a hook shape. of shepherd, comprising a distal element 424a and a proximal element 424b.
[00137] In an exemplary embodiment, the wireless electrosurgical instrument comprises a battery 437. Battery 437 supplies electrical power to generator circuit 420. Battery 437 may be any battery suitable for driving generator circuit 420 at desired power levels. In an exemplary embodiment, battery 437 is a 100 mAh triple cell lithium-ion polymer battery. The battery can be fully charged prior to use in a surgical procedure, and can hold a voltage of approximately 12.6 V. The 437 battery may have two fuses fitted to the 410 Wireless Electrosurgical Instrument, arranged in line with each battery terminal. . In an exemplary embodiment, a charging port 439 is used to connect battery 437 to a direct current source (not shown).
[00138] Generator circuit 420 can be configured in any suitable way. In some embodiments, the generator circuit comprises an RF drive and control circuit 440 and a controller circuit 482. Figure 18B illustrates an RF drive and control circuit 440, according to one embodiment. Figure 18B is part schematic illustration, part block diagram, illustrating the 440 RF drive and control circuit used in this embodiment to generate and control the RF electrical energy supplied to the 326 end actuator. As will be explained in more detail below. , in this embodiment, the drive circuitry 440 consists of an RF amplifier in resonant mode, which comprises a parallel resonant network at the output of the RF amplifier, and the control circuitry functions to control the operating frequency of the drive signal. , so that it is maintained at the resonant frequency of the drive circuit which, in turn, controls the amount of power supplied to the end actuator 326. How this is accomplished will become apparent from the following description.
[00139] As shown in Figure 18B, the RF drive and control circuit 440 comprises the battery 437 described above, arranged to supply, in this example, rails with about 0 V and about 12 V. An input capacitor (Cen) 442 is connected between the 0V and 12V rail to provide low source impedance. A pair of 443-1 and 443-2 FET switches (which in this mode are both N-channel to reduce power losses) are connected in series between the 0V voltage source and the 12V voltage source. An 805 FET logic gate drive circuit is used that generates two trigger signals - one to drive each of the two 443 FETs. The 445 FET terminal drive circuit generates trigger signals that cause the upper FET (443 -1) is on when the lower FET (443-2) is off and vice versa. This causes the 447 node to be alternately connected to the 12V rail (when the 443-1 FET is on) and the 0V rail (when the 443-2 FET is on). Figure 18B also shows the internal parasitic diodes 448-1 and 448-2 of the corresponding FETs 443, which conduct during any periods during which the FETs 443 are open.
[00140] As shown in Figure 18B, the node 447 is connected to an inductor-inductor resonant circuit 450 formed by the inductor Ls 452 and the inductor Lm 454. The logic gate drive circuit FET 445 is arranged to generate signals of trigger at a trigger frequency (fd) that opens and crosses the FET switches 443 at the resonant frequency of the parallel resonant circuit 450. As a result of the resonant characteristic of the resonant circuit 450, the square wave voltage at node 447 will cause a substantially sinusoidal current at drive frequency (fd) flows within the resonant circuit 450. As illustrated in Figure 18B, the inductor Lm 454 is the primary of a transformer 455, the secondary of which is formed by the inductor Lsec 456. The inductor Lsec 456 of the secondary of transformer 455 is connected to a parallel resonant inductor-capacitor-capacitor circuit 457, formed by inductor L2 458, capacitor C4 460, and capacitor C2 462. or 455 upconverts the drive voltage (Vd) across inductor Lm 454 to the voltage that is applied to the output parallel resonant circuit 457. The load voltage (VL) is output from the parallel resonant circuit 457, and is applied to the output. load (represented by the load resistance Rload 459 in Figure 18B) corresponding to the impedance of the forceps jaws and any tissue or blood vessel captured by the end actuator 326. As shown in Figure 18B, a pair of CbI 480 direct current blocking capacitors -1 and 480-2 is used to prevent any DC signal from being applied to the 459 load.
[00141] In one embodiment, the 455 transformer can be implemented with a Core Diameter (mm), a Wire Diameter (mm) and a Secondary Winding Gap according to the following specifications: Core Diameter, D (mm) D = 19.9 x 10-3 Wire diameter, W (mm) for 22 AWG wire W = 7.366 x 10-4 Gap between secondary windings, at span = 0.125 G = span/25.4
[00142] In this embodiment, the amount of electrical power supplied to the 326 end actuator is controlled by varying the frequency of the switching signals used to switch the 443 FETs. This works because the 450 resonant circuit acts as a frequency dependent attenuator ( no losses). The closer the trigger signal is to the resonant frequency of resonant circuit 450, the less attenuated the trigger signal. Similarly, as the frequency of the trigger signal moves away from the resonant frequency of circuit 450, the greater the attenuation of the trigger signal and, therefore, the less power supplied to the load. In this embodiment, the frequency of the switching signals generated by the FET 445 terminal drive circuit is controlled by a controller 481, based on a desired power to be supplied to the load 459 and on load voltage (VL) and current measurements. load values (IL) obtained by a conventional voltage sensing circuit 483 and a current sensing circuit 485. The way the 481 controller works will be described in more detail below.
[00143] In one embodiment, the voltage sensing circuit 483 and the current sensing circuit 485 may be implemented by high-speed, high-bandwidth rail-to-rail amplifiers (e.g., LMH6643, available from National Semiconductor) . However, these amplifiers draw relatively high current when operating. Consequently, a power saving circuit can be used to reduce the supply voltage of amplifiers when they are not being used in the voltage sensing circuit 483 and the current sensing circuit 485. In one embodiment, a step-down regulator ( e.g. LT3502, available from Linear Technologies) can be used by the energy saving circuit to reduce the supply voltage of the rail-to-rail amplifiers and therefore extend the life of the 437 battery.
[00144] Figure 18C illustrates the main components of controller 481, according to one embodiment. In the embodiment illustrated in Figure 18C, the controller 481 may comprise a processing unit, such as a microprocessor-based controller, and therefore most of the components illustrated in Figure 16 are software-based components. Still, a hardware-based 481 controller can be used instead. As shown, the controller 481 includes an I,Q synchronized sampling circuit 491 that receives the sensed voltage and current signals sent by the sense circuits 483 and 485 and obtains corresponding samples that are passed to a power calculation module 493, voltage Vrms and current Irms. Calculation module 493 uses the received samples to calculate the RMS voltage and RMS current applied to the load 459 (Figure 18B; end actuator 326 and tissue/blood vessel attached thereto) and from them the power currently being supplied to the load 459. The determined values are then passed to a frequency control module 495 and a medical device control module 497. The medical device control module 497 uses the values to determine the current impedance of the load 459 and with based on this calculated impedance and a predefined algorithm, determines which setpoint power (Paju) should be applied to the frequency control module 495. The medical device control module 497 is in turn controlled by signals received from a user input module 499, which receives user actions (e.g., pressing buttons or activating control levers 114 or 110 on handle 104), and also controls input devices. output (lights, a screen, a speaker, or the like) on the handle 104 via a user data output module 461.
[00145] The Frequency Control Module 495 uses the values obtained from the Calculation Module 493, the Power Setpoint (Paju) obtained from the Medical Device Control Module 497, and the System Preset Limits (to be explained later) ), to determine whether or not the applied frequency should be increased or decreased. The result of this decision is then sent to a square wave generation module 463 which, in this mode, increases or decreases by 1 kHz the frequency of a square wave signal generated by it, depending on the decision received. As will be understood by those skilled in the art, in an alternative embodiment, the frequency control module 495 can determine not only whether the frequency should be increased or decreased, but also the amount of frequency change required. In that case, the square wave generation module 463 would generate the corresponding square wave signal with the desired frequency change. In this embodiment, the square wave signal generated by the square wave generation module 463 is sent to the terminal drive circuit FET 445, which amplifies the signal and then applies it to the FET 443-1. The FET 445 terminal drive circuit also inverts the signal applied to the FET 443-1 and applies the inverted signal to the FET 443-2.
[00146] Electrosurgical instrument 410 may comprise additional features as discussed with respect to electrosurgical system 300. Those skilled in the art will recognize that electrosurgical instrument 410 may include a rotary knob 348, an elongated rod 314, and an end actuator 326. These elements function substantially similar to that discussed above with respect to electrosurgical system 300. In an exemplary embodiment, wireless electrosurgical instrument 410 may include visual indicators 435. Visual indicators 435 may provide a visual indication signal to an operator. In an exemplary embodiment, the visual indication signal may alert an operator that the device is on, or that the device is applying power to the end actuator. Those skilled in the art will recognize that visual indicators 435 can be configured to provide information on multiple device states.
[00147] Over the years, a variety of minimally invasive (or "tele-surgical") robotic systems have been developed to increase surgical dexterity, as well as to allow a surgeon to operate on a patient intuitively. Robotic surgical systems can be used with many different types of surgical instruments including, for example, ultrasonic or electrosurgical instruments, as described herein. Exemplary robotic systems include those produced by Intuitive Surgical, Inc., of Sunnyvale, California, USA. Such systems, as well as robotic systems from other manufacturers, are disclosed in the following US patents which are each incorporated herein by reference in their entirety: US Patent No. 5,792,135 entitled "Articulated Surgical Instrument For Performing Minimally Invasive Surgery With Enhanced Dexterity and Sensitivity", US Patent No. 6,231,565, entitled "Robotic Arm DLUS For Performing Surgical Tasks", US Patent No. 6,783,524, entitled "Robotic Surgical Tool With Ultrasound Cauterizing and Cutting Instrument", US Patent No. 6,364,888 entitled "Alignment of Master and Slave In a Minimally Invasive Surgical Apparatus", US Patent No. 7,524,320, entitled "Mechanical Actuator Interface System For Robotic Surgical Tools", US Patent No. 7,691,098, entitled " Platform Link Wrist Mechanism", US Patent No. 7,806,891, entitled "Repositioning and Reorientation of Master/Slave Relationship in Minimally Invasive Telesurgery", and US Patent No. 7,824,401, entitled "Surgical Tool With Writed Monopolar Electrosurgical End Effectors". Many of these systems, however, have in the past failed to generate the magnitude of forces needed to effectively cut and join tissue.
[00148] Figures 19 to 46C illustrate the exemplary modalities of robotic surgical systems. In some embodiments, the robotic surgical systems shown may use the ultrasonic or electrosurgical instruments described herein. Those skilled in the art will understand that the robotic surgical systems illustrated are not limited to only those instruments described herein, and may use any compatible surgical instruments. Those skilled in the art will further understand that while various modalities described herein can be used with the robotic surgical systems described, the description is not limited thereto, and can be used with any compatible robotic surgical system.
[00149] Figures 19 to 25 illustrate the structure and operation of various exemplary robotic surgical systems, and components thereof. Figure 19 shows a block diagram of an exemplary robotic surgical system 500. The system 500 comprises at least one controller 508 and at least one arm carriage 510. The arm carriage 510 may be mechanically coupled to one or more manipulators or arms. robotic arms, indicated by box 512. Each of the robotic arms 512 may comprise one or more surgical instruments 514 for performing various surgical tasks on a patient 504. Operation of the arm carriage 510, including arms 512 and instruments 514, may be controlled by a physician 502 from a controller 508. In some embodiments, a second controller 508' operated by a second physician 502' may also direct the operation of the arm carriage 510 in conjunction with the first physician 502'. For example, each of the doctors 502, 502' can control different arms 512 of the car or, in some cases, complete control of the car of the arm 510 can be passed between the doctors 502, 502'. In some embodiments, additional arm cars (not shown) can be used on patient 504. These additional arm cars can be controlled by one or more controllers 508, 508'. The arm carriage(s) 510 and controllers 508, 508' may be in communication with each other via a communication link 516, which may be any suitable type of wired or wireless communication link that carries any suitable signal type (eg electrical, optical, infrared, etc.) in accordance with any suitable communication protocol. Exemplary implementations of robotic surgical systems, such as the 5000 system, are disclosed in US Patent No. 7,524,320, which is incorporated herein by reference. Accordingly, various details of these devices will not be described in detail in this document beyond what may be necessary to understand various embodiments of the claimed device.
[00150] Figure 20 shows an exemplary embodiment of a robotic arm carriage 520. The robotic arm carriage 520 is configured to drive a plurality of surgical instruments, or instruments, generically designated as 522 within a work envelope 519. Various robotic surgery systems and methods employing master controller and robotic arm car arrangements are disclosed in US Patent No. 6,132,368, entitled "MultiComponent Telepresence System and Method", the disclosure of which is incorporated in its entirety herein by reference. In various forms, the robotic arm carriage 520 includes a base 524 from which, in the illustrated embodiment, three surgical instruments 522 are supported. In various forms, each of the surgical instruments 522 is supported by a series of manually pivotable joints, generically referred to as configuration joints 526, and a robotic manipulator 528. These structures are illustrated in the present invention with protective covers that extend over much of the robotic joint. These protective covers may be optional, and may be limited in size or entirely eliminated in some embodiments to minimize the inertia that is encountered by the servomechanisms used to manipulate such devices, to limit the volume of moving components for the purpose of collision avoidance, and to limit the total weight of the carriage 520. The carriage 520 is generally of adequate dimensions for its transport between operating rooms. Cart 520 can be configured to typically fit operating room doors and conventional hospital elevators. In various forms, carriage 520 would preferably have a weight and would include a wheel system (or other transport) that allows carriage 520 to be positioned adjacent to an operating table by a single attendant.
[00151] Figure 21 shows an exemplary embodiment of the robotic manipulator 528 of the robotic arm carriage 520. In the example shown in Figure 21, the robotic manipulators 528 may include a hinge 530 that restricts the movement of the surgical instrument 522. In various embodiments, hinge 530 includes rigid links coupled together by rotational joints in a parallelogram arrangement, so that surgical instrument 522 pivots about a point in space 532, as more fully described in issued US Patent No. 5,817,084, the full description of which is incorporated herein by way of reference. The parallelogram arrangement restricts rotation to turning about an axis 534a, sometimes called the pitch axis. Links supporting parallelogram articulation are pivotally mounted to form joints 526 (Figure 20), so that surgical instrument 522 additionally rotates about axis 534b, sometimes called the yaw axis. Pitch and yaw axes 534a and 534b intersect at remote center 536, which is aligned along a shank 538 of surgical instrument 522. Surgical instrument 522 may have additional degrees of freedom actuated as supported by the manipulator 540, including sliding movement of the surgical instrument 522 along the longitudinal axis of the "LT-LT" instrument. As the surgical instrument 522 slides along the axis of the LT-LT instrument with respect to the manipulator 540 (arrow 534c), the remote center 536 remains fixed with respect to the base 542 of the manipulator 540. Consequently, the entirety of the manipulator 540 is generally moved. to reposition the remote center 536. The linkage 530 of the manipulator 540 is driven by a series of motors 544. These motors 544 actively move the linkage 530 in response to commands from a processing unit of a control system. As will be discussed in more detail below, motors 544 are also used to manipulate surgical instrument 522.
[00152] Figure 22 shows an exemplary embodiment of a robotic arm carriage 520' that has an alternative configuration joint structure. In this exemplary embodiment, a surgical instrument 522 is supported by an alternate handle structure 528' between two tissue handling instruments. Those skilled in the art will understand that various embodiments of the claimed device may incorporate a wide variety of alternative robotic structures, including those described in US Patent No. 5,878,193, the full disclosure of which is incorporated herein by reference. Additionally, while data communication between a robotic component and the robotic surgical system processing unit is primarily described herein with reference to communication between the surgical instrument 522 and the controller, it should be understood that similar communications can occur between the set of circuits of a manipulator, a configuration joint, an endoscope or other image capturing device or the like, and the robotic surgical system processing unit for checking component compatibility, identifying the component type, communicating for component calibration ( such as displacement or the like), confirmation of component coupling to the robotic surgical system, or the like.
[00153] Figure 23 shows an exemplary embodiment of a controller 518 that can be used in conjunction with a robotic arm carriage, such as robotic arm carriages 520 and 520', shown in Figures 20 to 22. Controller 518 includes , in general, master controllers (generally represented as 519 in Figure 23), which are held by the physician and manipulated in space while the physician observes the procedure through a stereoscopic screen 521. A surgeon feedback meter 515 can be seen through screen 521, and provide the surgeon with a visual indication of the amount of force being applied to the cutting instrument or dynamic clamping element. 519 master controllers generally comprise manual input devices which preferably move with multiple degrees of freedom, and which often additionally have a handle or trigger for instrument actuation (e.g. to close pinch saws, apply an electrical potential to an electrode, or the like).
[00154] Figure 24 shows an exemplary embodiment of an ultrasonic surgical instrument 522 adapted for use with a robotic surgical system. For example, surgical instrument 522 can be coupled to one of the surgical manipulators, 528 and 528', described earlier in this document. As can be seen in Figure 24, surgical instrument 522 comprises a surgical end actuator 548 comprising an ultrasonic blade 550 and a forceps arm 552, which may be coupled to an elongate rod assembly 554 which, in some embodiments, may comprising an articulated joint 556. Figure 25 shows another exemplary embodiment that has an electrosurgical instrument 523 in place of the ultrasonic surgical instrument 522. The surgical instrument 523 comprises a surgical end actuator 548 comprising closable jaws, 551A and 551B, with power supply surfaces, 553A and 553B, for attaching and applying electrical energy to tissue between jaws 551A and 551B. A tissue cutting element, or scalpel 555, may be positioned at the distal end of an axially movable element 557, which may extend through the elongated shaft assembly 554 to the instrument mounting portion 558. Figure 26 shows one embodiment. exemplifying an instrument drive assembly 546 that can be coupled to one of the surgical handles, 528 and 528', to receive and control the surgical instruments 522 and 523. The instrument drive assembly 546 can also be coupled operationally to the controller 518 to receive inputs from the clinician to control the instrument, 522 and 523. For example, the actuation (e.g., opening and closing) of the gripper arm 552, the actuation (e.g., opening and closing ) of the jaws, 551A and 551B, the drive of the ultrasonic blade 550, the extension of the scalpel 555 and the drive of the power supply surfaces 553A, 553B, among others, can be controlled by means of instrument drive assembly 546, based on inputs from the clinician provided through controller 518. Surgical instrument 522 is operatively coupled to the manipulator by an instrument mounting portion, generically designated 558. Surgical instruments 522 include and an interface 560 that mechanically and electrically couples the instrument mounting portion 558 to the manipulator.
[00155] Figure 27 shows another view of the instrument drive assembly of Figure 26, which includes the 522 ultrasonic surgical instrument. Figure 28 shows another view of the instrument drive assembly of Figure 26, which includes the electrosurgical instrument 523. Instrument mounting portion 558 includes an instrument mounting plate 562 that operatively supports a plurality of (four are shown in Figure 26) rotating body portions, disks, or driven elements 564, each of which includes a pair of pins 566, which extend from a surface of driven element 564. One pin 566 is closer to an axis of rotation of each of the driven elements 564 than the other pin 566 on the same driven element 564, which helps to ensure positive angular alignment of driven element 564. Driven elements 564 and pins 566 may be positioned on one side of adapter 567 of instrument mounting plate 562.
[00156] Interface 560 also includes an adapter portion 568 that is configured to engage with mounting plate 562, as will be discussed further below. Adapter portion 568 may include an array of electrical connection pins 570, which may be coupled to a memory structure by a circuit board within instrument mounting portion 558. Although interface 560 is described herein with reference to mechanical, electrical, and magnetic coupling elements, it should be understood that a wide variety of telemetry modalities, including infrared, inductive coupling, or the like, may be used.
[00157] Figures 29 to 31 show additional views of the adapter portion 568 of the instrument drive assembly 546 of Figure 26. The adapter portion 568 generally includes an instrument side 572 and a bracket side 574 (Figure 29). ). In various embodiments, a plurality of swivel bodies 576 are mounted to a float plate 578 which has a limited range of movement with respect to the surrounding adapter structure normal to the main surfaces of the adapter 568. The axial movement of the float plate 578 aids in disengage the rotating bodies 576 from the instrument mounting portion 558 when the levers 580 along the sides of the housing of the instrument mounting portion 582 are actuated (see Figures 24, 25). Other mechanisms/arrangements may be employed to releasably couple the instrument mounting portion 558 to the adapter 568. In at least one form, swivel bodies 576 are resiliently mounted to the floating plate 578 by means of resilient radial elements that extend in a circumferential indentation around swivel bodies 576. Swivel bodies 576 can move axially with respect to plate 578 upon deflection of these resilient structures. When arranged in a first axial position (toward the instrument side 572), the rotating bodies 576 are free to rotate without angular limitation. However, as the swivel bodies 576 move axially toward the instrument side 572, the tabs 584 (extending radially from the swivel bodies 576) laterally engage detents on the floating plates so as to limit angular rotation. of the rotating bodies 576 around their axes. This limited rotation can be used to help drive the rotating bodies 576 into the drive pins 586 of a corresponding instrument support portion 588 of the robotic system, as the drive pins 586 will push the rotating bodies 576 into position. limited rotation until pins 586 are aligned with openings 590 (and slide into openings).
[00158] The openings, 590 on the instrument side 572 and the openings, 590 on the support side 574 of the rotating bodies 576 are configured to precisely align the driven elements 564 (Figures 27, 28) of the instrument mounting portion 558 with the driven elements 592 of the instrument holder 588. As described above in relation to inner and outer pins 566 of driven elements 564, the openings 590 are at different distances from the axis of rotation in their respective swivel bodies 576 so as to ensure that alignment is not 33 degrees from your intended position. Additionally, each of the openings 590 may be slightly elongated radially so as to correctly receive the pins 566 in the circumferential orientation. This allows the pins 566 to slide radially within the openings 590 and accommodate any axial misalignment between the instrument, 522 and 523, and the instrument holder 588, while minimizing any angular misalignment or jolt between the driving elements. and triggered. The openings 590 on the side of the instrument 572 may be offset by about 90 degrees from the openings 590 (shown in dashed lines) on the side of the holder 574, as can be seen more clearly in Figure 31.
[00159] Various embodiments may also include an array of electrical connector pins 570 located on the bracket side 574 of adapter 568, and instrument side 572 of adapter 568 may include slots 594 (Figure 31) for receiving an array of pins (not shown) of instrument mounting portion 558. In addition to electrical signals transmitted between surgical instrument 522, 523 and instrument holder 588, at least some of these electrical connections may be coupled to a memory adapter device 596 ( Figure 30) by a 568 adapter circuit board.
[00160] A removable latch arrangement 598 may be used to releasably secure the adapter 568 to the instrument holder 588. For use in the present invention, the term "instrument drive assembly", when used in the context of the robotic system, encompasses at least various embodiments of adapter 568 and instrument holder 588, which has been generically designated as 546 in Figure 26. As can be seen in Figure 26, for example, instrument holder 588 may include a first latch pin arrangement 600 which is sized to be received in corresponding clevis slots 602 disposed in adapter 568. Furthermore, instrument holder 588 may additionally have second latch pins 604 which are sized to be retained in corresponding latch shackles 606, on adapter 568. See Figure 30. In at least one form, a latch assembly 608 is movably supported on adapter 568 and can be forced between a first locked position, in which the lock pins 604 are retained within respective lock shackles 606, and an unlocked position, in which the second lock pins 600 may be inside or outside of the lock shackles 606. One or more springs (not shown) are used to force the lock assembly into the locked position. A lip on the instrument side 572 of the adapter 568 can slidably receive the laterally extending tabs of the instrument mounting housing 582.
[00161] As described, the driven elements 564 can be aligned with the driving elements 592 of the instrument holder 588 so that the rotational movement of the driving elements 592 causes the corresponding rotational movement of the driven elements 564. The rotation of the driving elements 592 and elements Drives 564 may be electronically controlled, for example, via robotic arm 612, in response to instructions received from clinician 502 via controller 508. Instrument mounting portion 558 may convert rotation of driven elements 564 into motion of the surgical instrument, 522 and 523.
[00162] Figures 32 to 34 show an exemplifying embodiment of instrument mounting portion 558 showing components for converting motion of driven elements 564 into motion of surgical instrument 522 and 523. Figures 32 to 34 show the instrument mounting portion with a stem 538 having a surgical end actuator 610 at a distal end thereof. End actuator 610 can be any type of end actuator suitable for performing a surgical task on a patient. For example, the end actuator can be configured to apply radiofrequency and/or ultrasonic energy to tissue at a surgical site. Stem 538 may be rotationally coupled to instrument mounting portion 558, and secured by an upper stem bracket 646 and a lower stem bracket 648 on a coupler 650 of stem 538.
[00163] In an exemplary embodiment, the instrument mounting portion 558 comprises a mechanism for converting the rotation of the various driven elements 564 into rotation of the rod 538, differential translation of elements along the axis of the rod (e.g., for articulation) , and reciprocally translating one or more elements along the axis of the shank 538 (e.g., to extend and retract fabric cutting elements such as 555, overtubes and/or other components). In an exemplary embodiment, rotating bodies 612 (e.g., rotating spools) are coupled to driven elements 564. Rotating bodies 612 may be formed integrally with driven elements 564. In some embodiments, rotating bodies 612 may be formed separately. of the driven elements 564, provided that the rotating bodies 612 and the driven elements 564 are fixedly coupled so that the driving of the driven elements 564 causes the rotating bodies 612 to rotate. Each of the rotating bodies 612 is coupled to a gear train, or gear mechanism, to provide articulation and rotation of the shaft, opening and closing of the forceps jaw, and actuation of the scalpel.
[00164] In an exemplary embodiment, the instrument mounting portion 558 comprises a mechanism for causing the differential translation of two or more elements along the axis of the rod 538. In the example shown in Figures 32 to 34, this movement is used for manipulating the swivel joint 556. In the illustrated embodiment, for example, the instrument mounting portion 558 comprises a rack-and-pinion gear mechanism to achieve differential translation and, therefore, rod pivot functionality. In an exemplary embodiment, the rack gear mechanism comprises a first pinion gear 614 coupled to a rotating body 612 such that rotation of the corresponding driven element 564 rotates the first pinion gear 614. A bearing 616 is coupled to the rotating body 612 and disposed between the driven element 564 and the first pinion gear 614. The first pinion gear 614 meshes with a first rack gear 618 to convert the rotary motion of the first pinion gear 614 into linear motion of the first rack gear 618, so as to control pivoting of pivot section 556 of rod assembly 538 in a leftward direction 620L. First rack gear 618 is connected to a first hinge band 622 (Figure 32), so that linear movement of first rack gear 618 in a distal direction causes hinge section 556 of rod assembly 538 to pivot left 620L. A second pinion gear 626 is coupled to another swivel body 612 so that rotation of the corresponding driven element 564 rotates the second pinion gear 626. A bearing 616 is coupled to the swivel body 612 and is disposed between the driven element 564 and the second pinion gear 626. The second pinion gear 626 meshes with a second rack gear 628 to convert the rotary motion of the second pinion gear 626 into linear motion of the second rack gear 628 so as to control the pivot section 556 in a right direction 620R. Second rack gear 628 is attached to second hinge band 624 (Figure 33) so that linear movement of second rack gear 628 in a distal direction causes hinge section 556 of rod assembly 538 to flex in right-hand drive 620R. Additional bearings can be arranged between the rotating bodies and corresponding gears. Any suitable bearings can be used to support and stabilize the assembly, and to reduce rotating friction from the rod and gears, for example.
[00165] In an exemplary embodiment, the instrument mounting portion 558 further comprises a mechanism for converting the rotation of the driven elements 564 into rotary motion about the axis of the rod 538. For example, the rotary motion may be rotation of the shaft. rod 538 itself. In the illustrated embodiment, a first spiral worm gear 630 is coupled to a rotating body 612, and the second spiral worm gear 632 is coupled to the rod assembly 538. A bearing 616 (Figure 17) is coupled to a rotating body 612 and is disposed between a driven element 564 and the first spiral worm gear 630. The first spiral worm gear 630 meshes with the second spiral worm gear 630. spiral worm thread 632, which may be coupled to rod assembly 538 and/or other instrument component, 522 and 523, for which longitudinal rotation is desired. Rotation can be caused in either a clockwise (CW) or a counterclockwise (CCW) direction, based on the rotational direction of the first and second spiral worm gears, 630 and 632. Consequently, the rotation rotation of the first spiral worm gear 630 about the first axis is converted to rotation of the second spiral worm gear 632 about the second axis, which is orthogonal to the first axis. As shown in Figures 32 through 33, for example, a clockwise rotation of the second spiral worm gear 632 results in a clockwise rotation of the rod assembly 538 in the direction indicated by 634CW. A counterclockwise rotation of the second spiral worm gear 632 results in a counterclockwise rotation of the rod assembly 538 in the direction indicated by 634CCW. Additional bearings can be arranged between the rotating bodies and corresponding gears. Any suitable bearings can be used to support and stabilize the assembly, and to reduce rotating friction from the rod and gears, for example.
[00166] In an exemplary embodiment, the instrument mounting portion 558 comprises a mechanism for generating reciprocating translation of one or more elements along the geometric axis of the shank 538. Such translation may be used, for example, to drive a cutting element. of fabric, such as the 555, drive an overtube for closing and/or articulating the end actuator 610, etc. In the illustrated embodiment, for example, a rack-and-pinion mechanism can provide reciprocal translation. A first gear 636 is coupled to a rotating body 612 so that rotation of the corresponding driven element 564 causes the first gear 636 to rotate in a first direction. A second gear 638 is free to rotate about a column 640 formed in the instrument mounting plate 562. The first gear 636 meshes with the second gear 638, so that the second gear 638 rotates in a direction that is opposite to the second gear 638. of the first gear 636. In one exemplary embodiment, the second gear 638 is a pinion gear meshing with a rack gear 642 which moves in a linear direction. Rack gear 642 is coupled to a translation block 644 which can translate distally and proximally with rack gear 642. Translation block 644 can be coupled to any suitable component of stem assembly 538 and /or end actuator 610 so as to provide reciprocating longitudinal movement. For example, translation block 644 may be mechanically coupled to tissue cutting element 555 of radiofrequency surgical device 523. In some embodiments, translation block 644 may be coupled to an overtube, or other component of the end actuator. 610 or stem 538.
[00167] Figures 35 to 37 illustrate an alternative embodiment of the instrument mounting portion 558, showing an alternative exemplary mechanism for converting the rotation of driven elements 564 into rotary motion about the geometric axis of the rod 538 and an alternative exemplary mechanism to generate reciprocating translation of one or more elements along the geometric axis of the rod 538. Now with reference to the reciprocating rotational mechanism, a first spiral worm gear 652 is coupled to a second spiral worm gear 654, which is mated to a third spiral worm gear 656. This type of arrangement can be used for a variety of reasons, including maintaining compatibility with existing 1000 robotic systems, and/or where space can be limited. be limited. The first spiral worm gear 652 is coupled to a rotating body 612. The third spiral worm gear 656 meshes with a fourth spiral worm gear 658 coupled to the rod assembly 538 A bearing 760 is coupled to a rotating body 612 and disposed between a driven element 564 and the first spiral worm gear 738. Another bearing 760 is coupled to a rotating body 612 and disposed between a driven element 564 and the third spiral worm gear 652. The third spiral worm gear 652 meshes with the fourth spiral worm gear 658, which can be coupled to the rod assembly 538 and/or or to another instrument component, 522 and 523, for which longitudinal rotation is desired. The rotation can be caused in either a clockwise or a counterclockwise direction, based on the rotational direction of the spiral worm gears, 656 and 658. Consequently, the rotation of the third worm gear spiral end 656 about the first axis is converted into rotation of the fourth spiral worm gear 658 about the second axis, which is orthogonal to the first axis. As shown in Figures 36 and 37, for example, the fourth spiral worm gear 658 is coupled to the rod 538, and a clockwise rotation of the fourth spiral worm gear 658 results in a clockwise rotation. clockwise from rod assembly 538 in the direction indicated by 634CW. A counterclockwise rotation of the fourth spiral worm gear 658 results in a counterclockwise rotation of the rod assembly 538 in the direction indicated by 634CCW. Additional bearings can be arranged between the rotating bodies and corresponding gears. Any suitable bearings can be used to support and stabilize the assembly, and to reduce rotating friction from the rod and gears, for example.
[00168] Now with reference to the alternative example mechanism for generating reciprocating translation of one or more elements along the axis of the shank 538, the instrument mounting portion 558 comprises a rack gear mechanism to provide reciprocating translation along shaft axis 538 (e.g., translation of a tissue cutting element 555 of radiofrequency surgical device 523). In an exemplary embodiment, a third pinion gear 660 is coupled to a rotating body 612 such that rotation of the corresponding driven element 564 causes the third pinion gear 660 to rotate in a first direction. Third pinion gear 660 meshes with rack gear 662 which moves in a linear direction. Rack gear 662 is coupled to a translation block 664. The translation block 664 may be coupled to a device component, 522 and 523, for example the tissue cutting element 555 of the radiofrequency surgical device, and/or an overtube or other component that is desired to be longitudinally translated.
[00169] Figures 38 to 42 illustrate an alternative embodiment of instrument mounting portion 558, showing another alternative exemplary mechanism for converting rotation of driven elements 564 into rotary motion around the axis of rod 538. In Figures 38 through 42, the rod 538 is coupled to the remainder of the mounting portion 558 by means of a coupler 676 and a bushing 678. A first gear 666 coupled to a rotating body 612, a fixed column 668 comprising first and second openings 672, a first and a second swivel pins 674 coupled to the rod assembly, and a cable 670 (or rope). The cable is wound around the swivel body 612. One end of the cable 670 is located through an upper opening 672 of the fixed column 668, and is fixedly coupled to an upper swivel pin 674. Another end of the cable 670 is located through a lower opening 672 of fixed column 668, and is fixedly coupled to a lower swivel pin 674. This type of arrangement is used for a variety of reasons, including to maintain compatibility with existing robotic systems 1000, and/or where space may be limited. Consequently, rotation of rotating body 612 causes rotation around rod assembly 538 in either a clockwise or counterclockwise direction, based on the rotational direction of rotating body 612 (e.g., rotation of rod 538 itself) . Consequently, rotation of rotatable body 612 about the first axis is converted to rotation of rod assembly 538 about the second axis, which is orthogonal to the first axis. As shown in Figures 38 through 39, for example, a clockwise rotation of the rotating body 612 results in a clockwise rotation of the rod assembly 538 in the direction indicated by 634CW. A counterclockwise rotation of the swivel body 612 results in a counterclockwise rotation of the rod assembly 538 in the direction indicated by 634CCW. Additional bearings can be arranged between the rotating bodies and corresponding gears. Any suitable bearings can be used to support and stabilize the assembly, and to reduce rotating friction from the rod and gears, for example.
[00170] Figures 43 to 46A illustrate an alternative embodiment of instrument mounting portion 558, showing an alternative exemplary mechanism for differential translation of elements along the geometric axis of rod 538 (e.g., for articulation) . For example, as illustrated in Figures 43 to 46A, instrument mounting portion 558 comprises a dual cam mechanism 680 to provide rod pivot functionality. In an exemplary embodiment, dual cam mechanism 680 comprises first and second cam portions 680A and 680B. The first and second follower arms 682 and 684 are pivotally coupled to corresponding pivot spools 686. As rotating body 612 coupled with dual cam mechanism 680 rotates, first cam portion 680A acts on first follower arm 682, and second cam portion 680B acts on second follower arm 684. As cam mechanism 680 rotates , follower arms 682 and 684 pivot around pivot spools 686. First follower arm 682 may be attached to a first element which is to be differentially translated (e.g., first hinge band 622). ). The second follower arm 684 is attached to a second element that is to be differentially translated (e.g., the second hinge band 624). As the upper cam portion 680A acts on the first follower arm 682, the first and second members are differentially translated. In the exemplary embodiment where the first and second elements are respective hinge bands 622 and 624, the rod assembly 538 pivots in a leftward direction 620L. As lower cam portion 680B acts on second follower arm 684, rod assembly 538 pivots in a rightward direction 620R. In some exemplary embodiments, two separate bushings, 688 and 690, are mounted under the respective first and second follower arms, 682 and 684, to allow rotation of the rod without affecting the pivotal positions of the first and second follower arms, 682 and 684 To achieve articulation movement, these bushings reciprocate with the first and second follower arms, 682 and 684, without affecting the pivotal position of jaw 902. Figure 46A shows bushings 688 and 690 and double cam assembly 680 , including the first and second cam portions, 680B and 680B, with the first and second follower arms, 682 and 684, removed to provide a more detailed and clear view.
[00171] In various embodiments, the instrument mounting portion 558 may additionally comprise internal power sources to drive the electronics and deliver the desired ultrasonic and/or radio frequency signals to the surgical tools. Figures 46B to 46C illustrate one embodiment of an instrument mounting portion 558' comprising internal sources of power and energy. For example, surgical instruments (eg, instruments 522 and 523) assembled using the instrument mounting portion 558' need not be hardwired to an external generator or other power source. Instead, the functionality of the various generators, 20 and 320, described herein may be implemented integrally to the mounting portion 558.
[00172] As illustrated in Figures 46B to 46C, the instrument mounting portion 558' may comprise a distal portion 702. The distal portion 702 may comprise various mechanisms for coupling the rotation of the actuator elements 612 to the end actuators of the instruments. various surgical instruments, 522 and 523, for example, as previously described herein. Near the distal portion 702, the instrument mounting portion 558' comprises an internal direct current (DC) power source, and an internal drive and control circuit 704. In the illustrated embodiment, the power source comprises first and second batteries, 706 and 708. In other respects, the instrument mounting portion 558' is similar to the various embodiments of the instrument mounting portion 558 previously described herein. .
[00173] Control circuit 704 may function similarly to that described above with respect to generators 20 and 320. For example, when an ultrasonic instrument 522 is used, control circuit 704 may provide an ultrasonic trigger signal in a similar manner. to that described above with respect to generator 20. Also, for example, when a radio frequency instrument 523, or an ultrasonic instrument 522, capable of providing a therapeutic or non-therapeutic RF signal is used, the control circuit 704 may provide a RF trigger signal, for example, as described earlier in this document with respect to module 23 of generator 20 and/or generator 300. In some embodiments, control circuit 704 may be configured similarly to that of control circuit 440 previously described in this document with reference to Figures 18B to 18C.
[00174] Various embodiments of an ultrasonic surgical instrument comprising an articulated harmonic waveguide are discussed below. It will be understood by those skilled in the art that the terms "proximal" and "distal", as used in reference to the ultrasonic surgical instrument, are defined in relation to a physician holding the handle of the instrument. Thus, movement in the distal direction would be movement in a direction away from the physician. It should be further recognized that, for the sake of convenience and clarity, spatial terms such as "top" and "bottom" are also used in the present invention in connection with the physician holding the handle assembly. However, the ultrasonic surgical instrument can be used in various orientations and positions, and these terms are not intended to be limiting or absolute.
[00175] The various modalities will be described in combination with the robotic surgical system 500 described above and the ultrasonic surgical instrument 10 described above. This description is presented by way of example, not limitation, and is not intended to limit its scope and applications. For example, as will be understood by one of skill in the art, any of the articulating harmonic waveguides described may be useful in combination with various robotic or hand-held surgical systems.
[00176] Figures 47 and 48A through C illustrate one embodiment of a pivotable harmonic waveguide 802. The pivotable harmonic waveguide 802 may comprise a drive section 804, a flexible waveguide 806, and an end actuator. 808. The pivoting function of the articulating harmonic waveguide 802 can be achieved through the flexible waveguide 806.
[00177] In one embodiment, the pivotable harmonic waveguide 802 may comprise a drive section 804. The drive section 804 may extend proximally to provide a connection from the pivotable harmonic waveguide to an ultrasonic transducer (not shown). ), such as, for example, a piezoelectric or magnetostrictive transducer. The drive section 804 may comprise a rigid section. In some embodiments, the drive section 804 may comprise one or more changes in cross-sectional area. Changes in cross-sectional area can correspond to an associated gain in an ultrasonic wave traveling through the 804 drive section.
[00178] In one embodiment, a flexible waveguide 806 may connect the drive section 804 and the end actuator 808. The flexible waveguide 806 may allow the end actuator 808 to be flexed at an angle to a longitudinal axis. 814 of drive section 804. In one embodiment, flexible waveguide 806 may have equal bending stiffness in all planes intersecting longitudinal axis 814 of drive section 804. In other embodiments, flexible waveguide 806 may be stressed in one or more planes, such as having low bending stiffness in one plane and high bending stiffness in all other planes.
[00179] In one embodiment, flexible waveguide 806 may comprise a circular cross section. In another embodiment, flexible waveguide 806 may comprise a non-circular cross-section, such as a loop. The cross-section of the flexible waveguide 806 can be chosen to maximize the frequency differential between the resonant and anti-resonance frequencies of the acoustic system. In one embodiment, flexible waveguide 806 may comprise one or more sections of different cross-sectional geometry. In this embodiment, the junction between one or more sections of different cross-section geometry can be located at a node, an antinode, or between a node and an antinode.
[00180] In one embodiment, the pivotable harmonic waveguide 802 may comprise an end actuator 808. The end actuator 808 is situated distal to the flexible waveguide 806. The end actuator 808 may comprise a section rigid. In one embodiment, the end actuator 808 may comprise a solid part. In another embodiment, the end actuator 808 may be hollow. The hollow end actuator can be filled with a material to increase radial hardness. In some embodiments, the end actuator 808 may be straight, curved, or any combination thereof. In another embodiment, the pivotable harmonic waveguide 802 may not have a distinct end actuator 808. In this embodiment, the function of the end actuator 808 may be performed by the distal end of the flexible waveguide 806. In some embodiments, the end actuator 808 may comprise a ceramic or other coating to modify the surface behavior of the end actuator. 808 when the 808 end actuator comes into contact with other materials.
[00181] In one embodiment, a junction 810 between the drive section 804 and the flexible waveguide 806 is located at a first predetermined location and a junction 812 between the flexible waveguide 806 and the end actuator 808 is located at a second predetermined location. In some embodiments, the first and second predetermined locations may be the locations of a node, an antinode, or some intermediate location. In another embodiment, the predetermined locations may be positioned so that a center point of the flexible waveguide is situated at a node, an antinode, or some intermediate location. The respective lengths of drive section 804, flexible waveguide 806, and end actuator 808 can be determined with respect to an acoustic longitudinal mode shape. In another embodiment, the respective lengths of drive section 804, flexible waveguide 806, and end actuator 808 may be determined with respect to a torsional mode shape, a transverse mode shape, or some combination of the same. In one embodiment, the length of flexible waveguide 806 may depend on an increase in phase velocity of an ultrasonic wave due to curvature of articulating harmonic waveguide 802.
[00182] In one embodiment, the flexible portion 806 may have a length equal to some multiple of half wavelengths. For example, in one embodiment, flexible waveguide 806 may have a length of 2 half wavelengths, or one wavelength. In another embodiment, flexible waveguide 806 may have a length equal to three half wavelengths. Those skilled in the art will recognize that the length of flexible waveguide 806 can comprise any suitable multiple of half-wavelengths.
[00183] In one embodiment, the articulating harmonic waveguide 802 may comprise a single piece. In another embodiment, the drive section 804, the flexible waveguide 806, and the end actuator 808 may be individually fabricated and joined by any suitable technique, such as tapping, brazing, press fit. , adhesives, laser soldering, diffusion bonding, or any combination thereof.
[00184] In one embodiment, the pivotable harmonic waveguide 802 may comprise a flexible waveguide 806 comprising a radius of curvature configured to reduce the effect of flexural waves (both transmitted and reflected). Local curvature of the flexible waveguide section 806 can result in flexural waves. Flexural waves can be transmitted, reflected, or both, and can deform a structure, such as the flexible waveguide 806, as they propagate through the structure. In one embodiment, the pivotable harmonic waveguide is configured to reduce flexural waves. To ensure that for an extensional (longitudinal) wave the effect of flexural waves due to local curvature is small, flexible waveguide 806 can be configured to satisfy the following radius of curvature equation:

[00185] where 'r' is the radius of the articulating harmonic waveguide 802 and R is the local radius of curvature, e.g. the radius of curvature of the flexible waveguide 806 with respect to the longitudinal axis of the drive section.
[00186] In one embodiment, the pivotable harmonic waveguide 802 may comprise a full-curvature limiter to prevent the flexible waveguide 806 from approaching the cutoff frequency of the pivotable harmonic waveguide 802. A cutoff frequency is a threshold where energy passing through a system, for example the articulating harmonic waveguide 802, begins to be reduced rather than passing through it. In one embodiment, the local radius of curvature, R, of flexible waveguide 806 is limited so that:

[00187] where c is the sound speed in bar of the material comprising the flexible waveguide 806 and f is the drive frequency supplied to the articulating harmonic waveguide 802 by an ultrasonic transducer.
[00188] In one embodiment, it may be desirable to minimize the traverse movement of the drive section 804 for a specific acoustic (longitudinal) mode. In one embodiment, transverse movement of drive section 804 can be reduced by choosing a length for drive section 804 that places the junction 810 between drive section 804 and flexible waveguide 806 at a node or antinode, and the junction 812 between the flexible waveguide 806 and the end actuator 808 at a node or antinode. For a 1/2A standing wave inside the flexible waveguide 806, the relationship between the subtended angle and the radius of curvature is:

[00189] where R is the radius of curvature, θ is the subtended angle, c is the phase velocity in bar, and f0 is the mode frequency. In one embodiment, to reduce or prevent permanent deformation (sagging), flexible waveguide 806 may comprise a flexural strength less than the elastic limit of the section material.
[00190] Figures 48A through 48C illustrate an embodiment of a pivotable harmonic waveguide comprising a flexible waveguide 906. The flexible waveguide 906 has a loop-shaped cross-sectional area that results in a tendency to bending in the A direction. Figure 48A shows a top view of the pivotable harmonic waveguide 802. Figures 48B and 48C show a side view of the pivotable harmonic waveguide 902. Figures 48A and 48B illustrate the flexible waveguide similar to a 906 loop in an unbent, or straight, state. The flexible loop-like waveguide 906 has a tendency to bend in the A direction (see Figure 48B). Flexible waveguide 906 can be flexed in direction A to cause end actuator 908 to activate at an angle to longitudinal axis 814 of pivotable harmonic waveguide 902. Figure 48C shows pivotable harmonic waveguide 902 in a flexed state.
[00191] In another embodiment, flexible waveguide 906 may be semi-flexible. In this embodiment, the flexible waveguide 906 may be flexed at an angle to the longitudinal axis of the pivotable harmonic waveguide 902 and may retain the flexed configuration at or near the bending angle of the longitudinal axis.
[00192] Figures 49 to 51 illustrate various embodiments of a pivotable harmonic waveguide 802. Figure 49 illustrates one embodiment of a pivotable harmonic waveguide 1002 comprising a flexible loop-shaped waveguide 1006 and an actuator hollow end actuator 1008. The hollow end actuator 1008 has a tissue treatment section 1010 and a wave amplifying section 1012. In some embodiments, the hollow end actuator 1008 may be filled with a material to increase radial hardness.
[00193] Figure 50 illustrates an embodiment of a pivotable harmonic waveguide 1102 comprising a flexible circular waveguide 1106 and a solid end actuator 1108. The flexible circular waveguide 1106 comprises an equal bending tendency in all directions. directions. Figure 51 illustrates an embodiment of a pivotable harmonic waveguide 1202 comprising a flexible loop-shaped waveguide 1206 with one or more slots 1214 and a solid end actuator 1208. The solid end actuator 1208 comprises a section of tissue treatment 1210 and a wave amplification section 1212.
[00194] Figures 52A and 52B illustrate one embodiment of a pivotable harmonic waveguide 1302 comprising first and second flexible waveguides 1306A, 1306B. A first drive section 1304A extends proximally and can be configured to mate with an ultrasonic transducer on a handheld or robotic surgical instrument. A second drive section connects the first flexible waveguide 1306A to the second flexible waveguide 1306B. The first and second flexible waveguides, 1360A, 1306B allow the pivotable harmonic waveguide 802 to be pivoted in a foreground and a background. In one embodiment, the foreground and background may be the same plane. In the embodiment shown in Figures 52A and 52B, the first and second planes are perpendicular. Figure 52B shows the pivotable harmonic waveguide 1302 pivoted in the A direction. The pivotable harmonic waveguide 1302 may be further pivoted by bending the second flexible waveguide 1306B in the plane extending into or out of the page.
[00195] Figures 53A and 53B illustrate another embodiment of articulating harmonic waveguides 2202A, 2202B. The 2202A, 2202B pivotable harmonic waveguides comprise proximally extending first drive sections 2204A, 2204B and can be configured to mate with an ultrasonic transducer. First flexible waveguides 2206A, 2206B are coupled to first drive sections 2204A, 2204B. The first flexible waveguides 2206A, 2206B allow the pivotable harmonic waveguides 2202A, 2202B to be pivoted in a foreground with respect to the longitudinal axis 814. The pivotable harmonic waveguides 2202A, 2202B additionally comprise end actuators 2208A, 2208B . End actuators 2208A, 2208B comprise a tissue treatment section 2210A, 2210B and a wave amplifying section 2012A, 2012B. Figure 53B illustrates a close up view of the first flexible waveguides 2206A, 2206B. The first flexible waveguides 2206A, 2206B comprise a loop-like section with a low bending tendency in a first direction and a high bending tendency in all other directions. Figure 54 illustrates the 2202A articulating harmonic waveguide in a flexed position. Flexible waveguide 2206A is flexed at an angle to longitudinal axis 814.
[00196] In one embodiment, the pivotable harmonic waveguide 802 may comprise a pivot actuator to allow the user to flex the flexible waveguide 806 at an angle to the longitudinal axis 814 of the drive section 804. The pivot actuator may comprise one or more control elements. Figures 53A and 53B illustrate one embodiment of a pivotable harmonic waveguide 1402 comprising a pivot actuator 1416. The pivot actuator 1416 allows the user to activate the pivotable harmonic waveguide 1402 in a desired position or configuration. Figure 55A illustrates the articulating harmonic waveguide 1402 in a non-flexed, or mechanically supporting, position. The pivot actuator 1416 comprises a first nodal flange 1418A and a second nodal flange 1418B. Nodal flanges 1418A, 1418B may be located at nodes or antinodes of articulating harmonic waveguide 1402. In one embodiment, second nodal flange 1418B is located at a more distal node or antinode. In one embodiment, the first and second nodal flanges 1418A, 1418B may be located at the junctions between the drive section 1404, the flexible waveguide 1406, and the end actuator 1408. A control member, such as, for example, a handle 1420, extends from the second nodal flange 1418B in a proximal direction. Cable 1420 passes through a cable retainer (not shown) at first nodal flange 1418A and continues proximally. Cable 1420 can be actuated to flex flexible section 1406. Cable 1420 can be connected to a robotic surgical system, such as the robotic surgical system 500, a handheld surgical instrument, such as the surgical instrument 10, or can extend proximally to allow the user to manipulate the handle directly.
[00197] Figure 55B illustrates the articulating harmonic waveguide 1402 in a flexed state. In this embodiment, the cable 1420 has been tensioned in a proximal direction, causing the flexible waveguide 1406 to flex with respect to the longitudinal axis 814 of the pivotable harmonic waveguide 1402. The cable 1420 allows the flexible waveguide 1406 to flex in a specific direction with respect to the longitudinal axis 814 of the pivotable harmonic waveguide 1402. In one embodiment, the direction of bending of the cable 1420 corresponds to the tensioned direction of bending of the flexible waveguide 1406.
[00198] Figure 56 illustrates an embodiment of a swivel harmonic waveguide 1502 comprising a two-wire pivot actuator 1516. The two-wire pivot actuator 1516 comprises a first nodal flange 1518A, a second nodal flange 1518B, and a first and a second control member, such as first and second cables 1520A, 1520B. The first and second cables 1520A, 1520B may be diametrically opposed and may be permanently attached to the second nodal flange 1518B. The first and second cables 1520A, 1520B may extend proximally from the second nodal flange 1518B, pass through the cable retainers in the first nodal flange 1518A, and continue in a proximal direction. In one embodiment, the cable retainers may comprise one or more holes formed in the first nodal flange 1518A. The first and second cables 1520A, 1520B may be connected to a robotic surgical system, such as the robotic surgical system 500, a handheld surgical instrument, such as the ultrasonic surgical instrument 10, or may extend proximally to allow the user to manipulate the handle directly.
[00199] In the embodiment illustrated in Figure 56, the flexible waveguide 1506 can be flexed in a first direction 'A' or a second direction 'B'. Flexible waveguide 1506 can be flexed in a first direction 'A' by tensioning first cable 1520A in a proximal direction. When the first cable 1520A is tensioned to cause the flexible waveguide 1506 to flex in the first direction 'A', the second cable 1520B may be loosened to allow the flexible waveguide 1506 to flex in the first direction 'A' . Flexible waveguide 1506 can be flexed in a second direction 'B' by tensioning the second cable 1520B in a proximal direction. When the second cable 1520B is tensioned, the first cable 1520A may be loosened to allow the flexible waveguide 1306 to flex in the second direction 'B'. In one embodiment, a mechanism may be used to simultaneously tighten first cable 1520A and loosen second cable 1520B, or to simultaneously tighten second cable 1520B and loosen first cable 1520A. In one embodiment, one or more coils may be used to allow one cable to be wound while the other cable is simultaneously slackened.
[00200] In one embodiment, the one or more control elements may comprise a slender column connecting first and second nodal flanges 1418A, 1418B. The slender column can be "bent" in one direction when the flanges are in an aligned, or straight, position. The slender column can be pushed to "snap" alongside the articulating harmonic waveguide 1402, causing the slender column to flex, the first and second nodal flanges 1418A, 1418B become misaligned, and the flexible waveguide 1406 flexes with respect to longitudinal axis 814. In another embodiment, the first and second cables 1520A, 1520B may be replaced with bimetallic strips that can be manipulated to misalign the flanges and flex the flexible waveguide 1406.
[00201] In one embodiment, the linkage actuator 1416 may comprise a screw jack mechanism. The screw jack mechanism can be coupled to the first and second nodal flanges, 1418A, 1418B. The screw jack mechanism can be activated to push the first nodal flange 1418A away from the second nodal flange 1418B. By forcing the first and second nodal flanges 1418A, 1418B away from each other, the screw jack mechanism causes the flexible waveguide 1406 to flex with respect to the longitudinal axis 814.
[00202] In one embodiment, the pivot actuator may comprise a pivotable outer sheath disposed over the pivotable harmonic waveguide 802. In this embodiment, the pivotable harmonic waveguide 802 may comprise one or more crossover elements, such as, for example, a silicone crack former. The one or more crossover elements may be disposed along the pivotable harmonic waveguide 802 to provide points of contact between the pivotable harmonic waveguide 802 and the pivotable outer sheath. In one embodiment, the one or more cross elements can act as flanges to allow pivoting of the pivotable harmonic waveguide 802. Examples of pivotable outer sheaths that can be used as a pivot actuator are disclosed in US Patent Application No. 13/538,588, entitled "Surgical Instruments with Articulating Shafts", incorporated herein by reference. In various embodiments, the cross elements may be located at a node, an antinode, an intermediate point, or any combination thereof.
[00203] Figures 55 to 58 illustrate various embodiments of articulating harmonic waveguides 1602, 1702, 1802, 1902 comprising a full-curvature limiter. The total curvature limiter may comprise a mechanical or electrical latch to prevent the articulating harmonic waveguide 802 from exceeding one or more predetermined conditions, such as, for example, ensuring that the total curvature of the articulating harmonic waveguide 802 does not exceed the limitations. for efficient acoustic transmission. In one embodiment, the flexible waveguide 806 is a rod of small diameter or small lateral dimension. Flexible waveguide 806 may be a relatively short section of pivotable harmonic waveguide 802. For example, flexible waveguide 806 may be between 0.5 and 10 centimeters in length. Flexible waveguide 806 allows acoustic propagation around a bend or corner.
[00204] The total curvature limiter can be operated to prevent the 802 pivoting harmonic waveguide from exceeding one or more predetermined limits. In one embodiment, the one or more predetermined thresholds may comprise acoustic transmission thresholds. In a curved waveguide, such as the articulating harmonic waveguide 802 in a flexed state, the curvature results in a change in resonant frequency. Changing the resonant frequency can cause the drive frequency provided by the ultrasonic transducer to approach the waveguide cutoff frequency. For mild local curvature conditions and where local shear conditions are not obtainable, efficient transmission of motion through the waveguide depends on the mean square curvature of the waveguide. This relationship results in two conditions that can constrain the curvature of the articulating harmonic waveguide.
[00205] In one embodiment, the articulating harmonic waveguide 802 may comprise a flexible waveguide 806 comprising a radius of curvature configured to reduce the effect of flexural waves (both transmitted and reflected). Local curvature of the flexible waveguide section 806 can result in flexural waves. Flexural waves can be transmitted, reflected, or both, and can deform a structure, such as the flexible waveguide 806, as they propagate through the structure. In one embodiment, the pivotable harmonic waveguide is configured to reduce flexural waves upon reaching a first condition. To ensure that for an extensional (longitudinal) wave the effect of flexural waves due to local curvature is small, flexible waveguide 806 can be configured to satisfy the first condition that requires:

[00206] where 'r' is the radius of the articulating harmonic waveguide 802 and R is the local radius of curvature, e.g. the radius of curvature of the flexible waveguide 806 with respect to the longitudinal axis of the drive section.
[00207] In one embodiment, a second condition may limit the radius of curvature of the flexible waveguide 806 to prevent the articulating harmonic waveguide 802 from approaching the cutoff frequency. A cutoff frequency is a threshold where energy passing through a system, for example the 802 articulating harmonic waveguide, begins to be reduced rather than passing through it. In one embodiment, the local radius of curvature of flexible waveguide 806 can be configured to satisfy the second condition, which requires:

[00208] where R is the local radius of curvature, c is the sound speed in bar of the material comprising the flexible waveguide 806, and f is the drive frequency supplied to the articulating harmonic waveguide 802 by an ultrasonic transducer.
[00209] In another embodiment, the one or more predetermined limits may comprise a bending stress limit. Bending stress can be approximated for a uniformly flexed wire section. In one embodiment, the bending stress of the flexible waveguide 806 may be maintained at a value less than the elastic limit of the material of the flexible waveguide 806. For a flexible waveguide 806 produced from a material having a modulus of elasticity E, the bending stress can be maintained according to a third limit, which requires:

[00210] In another embodiment, the one or more predetermined limits may comprise access limits. Limits that encompass access to desired tissue targets may be related to the anatomy of the site or the accessory devices that provide the trajectory from outside the body to or even close to the target. This trajectory may include, for example, trocars, flexible endoscopes, rigid laparoscopes, etc. For example, in one embodiment, a flexible endoscope may encounter a radius of curvature of approximately 6.99 centimeters (2.75 inches) as it passes through the patient's mouth and pharynx. As another example, the ETS-Flex 35 mm Laparoscopic Linear Cutter available from Ethicon Endosurgery, Inc. provides access to target structures via a swivel joint with a radius of curvature of approximately 2.87 centimeters (1.13 inches) . As a third example, a retroflexible distal portion of a gastroscope can provide an accessory channel in a tight loop with a radius of about 2.8 centimeters (1.1 inches).
[00211] In various embodiments, the one or more predetermined limits may comprise additional limits, such as, for example, the resonant frequency of the articulating harmonic waveguide 802, the peak displacement of the end actuator 808, the displacement profile of the end actuator 808, and end actuator contact pressure 808, such as sharpening, pinching force, or other forces applied by the end actuator to a target tissue area.
[00212] In one embodiment, the articulating harmonic waveguide 802 may comprise a total curvature limiter to maximize acoustic transmission and minimize local bending stress by minimizing local bending (or maximizing local bending radius) of the flexible waveguide 806 and minimizing the total path curvature of the articulating harmonic waveguide 802.
[00213] Figure 57 illustrates an embodiment of an ultrasonic surgical instrument 1600 comprising an articulating harmonic waveguide 1602 and a total curvature limiter 1628. In the embodiment shown in Figure 57, the total curvature limiter 1628 comprises a stride limiter 1630 on the handle 1622 of the ultrasonic surgical instrument 1600. The stride limiter 1630 may comprise a spring-loaded telescopic electrical connection 1636 placed between a mechanical reference support 1634 and a displacement control member 1632. As per the total curvature of the waveguide flexible 1606 approaches a predetermined limit beyond which effective operation cannot be ensured, as total curvature exceeds one of the above limits, electrical connection 1636 is interrupted by movement of displacement control member 1632 to a predetermined distance from the mechanical support 1634. If electrical connection 1636 between mechanical support 1634 and control member 1632 is interrupted, no energy is transmitted from the ultrasonic generator, such as generator 20, to the ultrasonic transducer 1624 coupled to the articulating harmonic waveguide 1602.
[00214] Figure 58 illustrates an embodiment of an ultrasonic surgical instrument 1700 comprising a pivotable harmonic waveguide 1702 and a full-curvature limiter 1728. The full-curvature limiter 1728 comprises a two-stage electrical connection 1730 with an limit warning 1736. As the total curvature of the flexible waveguide 1706 approaches a predetermined limit, the continuity of a first electrical connection 1732 is interrupted, causing the limit warning indicator 1736 to provide a limit warning to the user that the pivotable harmonic waveguide 1702 is approaching one of the predetermined limits. In various embodiments, the boundary warning may comprise a visual warning, an audible warning, a tactile warning, an olfactory warning, or any combination thereof. If the total curvature increases beyond the warning limit, a second electrical connection 1734 is interrupted, resulting in a pause in power from the ultrasonic generator to the 1724 ultrasonic transducer of the 1700 ultrasonic surgical instrument.
[00215] Figure 59 illustrates an embodiment of a pivotable harmonic waveguide 1802 comprising a total curvature limiter 1828. The total curvature limiter 1828 comprises a resonant frequency shift tracker 1830. resonant frequency offset 1830 is coupled to the ultrasonic generator (not shown) to provide a feedback signal that corresponds to the vibration frequency of the articulating harmonic waveguide 1802. In one embodiment, the resonant frequency offset tracker 1830 is located on a node. As the resonance of the 1802 articulating harmonic waveguide approaches a cutoff frequency due to the change in radius of curvature, the generator can provide a threshold warning to the user. In various embodiments, the boundary warning may comprise a visual warning, an audible warning, a tactile warning, an olfactory warning, or any combination thereof. In some embodiments, continued operation beyond the limit warning may result in a pause in power to the 1624 ultrasonic transducer.
[00216] In one embodiment, illustrated in Figure 60, the total curvature limiter 1928 may comprise a viewing window 1730 located within the handle 1922. The viewing window 1730 may comprise one or more graduations 1934 that indicate loss of efficiency due to an increase in the radius of curvature. A user can view the displacement control elements (not shown) through the 1730 viewport in relation to the 1934 graduations. The 1934 graduations may indicate that the 1902 pivoting harmonic waveguide is approaching its operating limits. Limits can be printed on the handle, indicating a safe operating zone, a warning zone, and/or a shutdown zone.
[00217] In one embodiment, flexible waveguide 806 may have one or more full-curvature stops formed on flexible waveguide 806. Flexible waveguide 806 may comprise one or more full-curvature stops, such as a rod. segmented (such as a laser engraved rod), articulation joints with fixed bending bands, laterally rigid tubes, and/or tubes of limited flexibility. In another embodiment, the articulating harmonic waveguide 802 can be manipulated for the worst case of intended curvature so that non-compatible local curvature conditions are not met.
[00218] In one embodiment, flexible waveguide 806 may be centered around an antinode. In the embodiment shown in Figure 61, the flexible waveguide 2006 has a center point 2009 situated on an antinode. By placing the 2009 center point on an antinode, transitions at low internal voltages (ideally zero) and no gain impact can be achieved by a 2006 limited-length flexible waveguide centered near the antinode. In the illustrated embodiment, the junction 2010 between the drive section 2004 and the flexible waveguide 2006 and the junction 2012 between the flexible waveguide 2006 and the end actuator 2008 are both situated at a distance of λ/8 from the center point. 2009, where À is the wavelength of the ultrasonic trigger signal. Using a slender 2006 flexible waveguide allows for tighter bending or bending. Bending can be light enough that the 2002 articulating harmonic waveguide can be housed in a articulating tube assembly. In an exemplary embodiment, the drive section 2004 may comprise a diameter of 0.432 centimeters (0.170 inches), the flexible waveguide 2006 may comprise a loop-like section that has a thickness of 0.051 centimeters (0.020 inches), and which has a length of A/8.
[00219] Figure 62 illustrates an embodiment of a robotic surgical tool 2100 comprising an instrument mounting portion 2122 and a pivotable harmonic waveguide 2102. The instrument mounting portion 2122 is configured to interact with the robotic surgical system, such as the robotic surgical system 500. In this embodiment, the pivot actuator 2116, the full bend limiter 2128, and other controls of the pivotable harmonic waveguide 2102 can be encapsulated in the instrument mounting portion 2122.
[00220] Figure 63 illustrates an embodiment of a bayonet clamp-type surgical instrument 2300 comprising a shear mechanism 2350. The shear mechanism 2350 comprises a pivotable harmonic waveguide 2302 and a surgical block 2354. The harmonic waveguide 2302 is similar to the 1302 swivel harmonic waveguide discussed in Figures 52 through 52B. In the embodiment shown in Figure 63, the pivotable harmonic waveguide 2302 comprises a first driver section 2304A, a first flexible waveguide 2306A, a second driver section 2304B, a second flexible waveguide 2306B, a 2312, and an end actuator section 2308. The first and second flexible waveguides 2306A, 2306B both have a tendency to bend in the same plane, allowing the articulating harmonic waveguide 2302 to assume a clamp configuration. bayonet. A block tip 2352 runs parallel to the pivotable harmonic waveguide 2302. A surgical block 2354 is disposed at the distal end of the block tip 2352. The surgical block 2354 and end actuator 2308 can be used to treat a section of tissue located among them.
[00221] In one embodiment, the 2300 bayonet forceps surgical instrument comprises an ultrasonic transducer to produce a higher than average ultrasonic signal, such as an 80 kHz signal. The higher frequency ultrasonic signal allows a smaller ultrasonic transducer to be used. In this embodiment, only the most distal portion of the end actuator 2308 opposite the operating room 2354 is used for treating a section of tissue and therefore the shorter wavelength of the high frequency ultrasonic signal does not cause any problems. feedback on the 2302 Articulating Harmonic Waveguide. The 2300 Bayonet Clamp Surgical Instrument provides the user with a device that exactly mimics the operation of a traditional clamp device. The misaligned construction of the 2308 End Actuator also provides excellent visibility to the target tissue location when the device is used.
[00222] Figures 64A through 66B illustrate various embodiments of flexible ultrasonic shear surgical devices comprising a pivotable harmonic waveguide 802. Figures 64A and 64B illustrate one embodiment of a flexible shear device 2400 comprising a pivotable harmonic waveguide 2402. The drive section 2404 is disposed within an outer sheath 2456. The first and second flexible strips 2420A, 2420B are disposed within the outer sheath 2456 and connected to the distal end of the outer sheath 2456. second flexible strips 2420A, 2420B are connected to a pivot actuator 2421 at their proximal end. The pivot actuator 2421 can be pivoted causing the first flexible strip 2420A to move proximally and simultaneously causing the second flexible strip 2420B to move distally. Movement of the first and second flexible strips causes the outer sheath 2456 to flex in the direction of the proximally translated flexible strip, in this case the first flexible strip 2420A. In one embodiment, the flexible waveguide 2406 of the pivotable harmonic waveguide 2402 can be flexed together with the outer sheath 2456. Bending of the outer sheath 2456 and the pivotable harmonic waveguide 2402 allows the flexible shear device 2400 to pinch and treat tissue sections that would be difficult or impossible to treat with traditional, non-flexible shear.
[00223] Figures 65A and 65B illustrate an embodiment of a flexible shear device 2500 with the pivotable harmonic waveguide 2402 removed. In the illustrated embodiment, the first and second flexible strips 2420A, 2420B are connected to the gripper arm 2554. Movement of the pivot actuator 2516 in the proximal or distal direction causes the gripper arm 2554 to rotate from a pinched position, shown in Figure 65A, for an unclamped position, shown in Figure 65B. In this embodiment, pivot actuator 2516 can be pivoted to cause outer sheath 2556 to be pivoted at an angle to the longitudinal axis of outer sheath 2556.
[00224] Figures 66A and 66B illustrate one embodiment of a flexible shear device 2600. The flexible shear device 2600 comprises a pivotable harmonic waveguide 2600 disposed within a flexible sheath 2656. The flexible sheath 2656 may have one or more flexing features, such as flex slits 2657, formed in the flexible sheath 2656 to facilitate pivoting of the flexible sheath 2656 at an angle to the longitudinal axis of the flexible sheath 2656. A flexible waveguide 2606 may be located within the sheath flexible 2656 at the location of one or more flex slots 2657 to facilitate pivoting of the flexible sheath 2656 and the pivotable harmonic waveguide 2602. The flexible sheath 2656 may be pivoted in a manner similar to that discussed above with reference to the Figures of 64A to 65B.
[00225] A processing unit situated either on the instrument mounting portion or on the robotic controller or on the carriage side of the interface-coupled arm may be employed to control the operation of the various articulating harmonic waveguides described herein. The processing unit may be responsible for executing various software programs such as system programs, application programs, and/or modules to provide computing and processing operations for any surgical instruments described above, including controlling the operation of various waveguides. articulating harmonicas described here. A suitable processing unit may be responsible for performing various data communication tasks and operations, such as transmitting machine commands and data information over one or more wired or wireless communications channels. In various embodiments, the processing unit may include a single processor architecture, or may include any suitable processor architecture, and/or any suitable number of processors, in accordance with the described embodiments. In one embodiment, the processing unit may be implemented using a single integrated processor.
[00226] The processing unit may be implemented in the form of a host central processing unit (CPU), through the use of any suitable processor circuit or logic device (circuit), such as a general purpose and/or a state machine. The processing unit may also be implemented in the form of an integrated circuit multiprocessor (CMP, "chip multiprocessor"), a dedicated processor, integrated processor, media processor, input/output processor (I/O, in/out), coprocessor, microprocessor, controller, microcontroller, application specific integrated circuit (ASIC), field programmable gate array (FPGA) array"), programmable logic device (PLD, "programmable logic device"), or other processing device in accordance with the described modalities.
[00227] In one embodiment, the processing unit may be coupled to one or more memory and/or storage components via a bus located either on the instrument mounting portion, or on the controller/car side of the arm. The memory bus may comprise any suitable interface and/or bus architecture to allow the processing unit to access one or more memory and/or storage components. Although the one or more memory and/or storage components may be separate from the processing unit, it is worth noting that, in various embodiments, some portion or all of the one or more memory and/or storage components may be included in the same circuit. integrated in the form of the processing unit. Alternatively, some or all of the one or more memory and/or storage components may be arranged on an integrated circuit or other medium (eg flash memory, hard disk drive) external to the integrated circuit of the processing unit.
[00228] The one or more memory and/or storage components represent one or more computer readable media. The one or more memory and/or storage components may be implemented using any computer-readable media capable of storing data, such as volatile or non-volatile memory, removable or non-removable memory, erasable or non-erasable memory, writable memory or rewritable, and so on. The one or more memory and/or storage components may comprise volatile media (e.g., random access memory (RAM)) and/or non-volatile media (e.g., read-only memory (ROM) , "read only memory"), flash memory, optical discs, magnetic discs and the like). The one or more memory and/or storage components may comprise fixed media (e.g. RAM, ROM, a fixed hard disk drive, etc.) as well as removable media (e.g. a flash memory drive, a removable hard disk, an optical disk, etc.). Examples of computer-readable storage media may include, without limitation, RAM, dynamic RAM (DRAM, for "dynamic RAM"), DRAM with double data rate (DDRAM, for "Double-Data-Rate DRAM"), DRAM synchronous (SDRAM, "synchronous DRAM"), static RAM (SRAM, "static RAM"), read-only memory (ROM, "read-only memory"), programmable ROM (PROM, "programmable ROM") , erasable programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), flash memory (e.g. NOR or NAND type flash memory), content addressable memory (CAM, for "content addressable memory"), polymer memory (e.g. ferroelectric polymer memory), phase shift memory, ovonic memory, ferroelectric memory, polycrystalline silicon/silicon dioxide/silicon nitride memory /silicon dioxide/monocrystalline silicon (SONOS, from "silicon-oxide-nitride-oxide-silicon"), m cards agnetic or optical, or any other type of media suitable for storing information.
[00229] One or more I/O devices allow a user to send commands and information to the processing unit, and also allow information to be presented to the user and/or other components or devices. Examples of input devices include a keyboard, a cursor control device (eg, a mouse), a microphone, a digitizer, and the like. Examples of output devices include a display device (eg, a monitor or projector, speakers, a printer, a network card, etc.). The processing unit can be coupled to an alphanumeric keyboard. The keyboard may comprise, for example, a QWERTY key layout and an embedded numeric keypad. A display device can be coupled to the processing unit. The display device may comprise any visual interface suitable for displaying content to a user. In one embodiment, for example, the display device may be implemented by means of a liquid crystal display (LCD), such as a color LCD screen (for example, with 76-bit color) of the thin-film transistor (TFT) type. The LCD touch screen can be used with a pen and/or handwriting recognition program.
[00230] The processing unit may be arranged to provide processing or computing resources to robotically controlled surgical instruments. For example, the processing unit may be responsible for running various software programs, including system programs such as an operating system (OS, for "operating system") and application programs. System programs can often assist in the operation of robotically controlled surgical instruments, and can be directly responsible for controlling, integrating, and managing the individual hardware components of the computer system. The OS can be implemented, for example, as a Microsoft® Windows OS, Symbian OSTM, Embedix OS, Linux OS, BREW OS (Binary Run-time Environment for Wireless), JavaOS, Android OS, Apple OS or other suitable operating systems, according to the described modalities. The computing device may comprise other system programs, such as device drivers, programming tools, utility programs, software libraries, application programming interfaces (APIs), and so on.
[00231] Several modalities can be described here, in the general context of computer-executable instructions, such as software, program modules and/or engines being executed by a computer. Generally speaking, software, program modules and/or engines include any software element arranged to perform specific operations or implement specific abstract data types. Software, program modules and/or engines may include routines, programs, objects, components, data structures and the like that perform specific tasks or implement specific abstract data types. An implementation of software components and techniques, program modules and/or engines may be stored on, and/or transmitted by, some form of computer readable media. In this sense, computer-readable media can be any available media or media that can be used to store information and that are accessible by a computing device. Some modalities can also be practiced in distributed computing environments, where operations are performed by one or more remote processing devices, which are linked through a communications network. In a distributed computing environment, software, program modules, and/or engines can be located on both local and remote computer storage media, including memory storage devices.
[00232] Although some embodiments can be illustrated and described as comprising functional components, software, engines and/or modules performing various operations, it can be understood that these components or modules can be implemented by one or more hardware components, software components and /or a combination thereof. Functional components, software, engines and/or modules may be implemented, for example, by logic (e.g. instructions, data and/or code) to be executed by a logic device (e.g. processor). This logic can be stored internally or externally on a logical device, on one or more types of computer-readable storage media. In other embodiments, functional components such as software, motors and/or modules may be implemented by hardware elements which may include processors, microprocessors, circuits, circuit elements (e.g. transistors, resistors, capacitors, inductors, and so on). ), integrated circuits, application specific integrated circuits (ASIC, "application specific integrated circuits"), programmable logic devices (PLD, "programmable logic devices"), digital signal processors (DSP, "digital signal processors") , field programmable gate array (FPGA), logic gates, registers, semiconductor device, integrated circuits, microchips, chipsets and so on.
[00233] Examples of software, engines and/or modules may include software components, programs, applications, computer programs, application programs, system programs, machine programs, operating system software, middleware, firmware, software modules , routines, subroutines, functions, methods, procedures, software interfaces, application program interfaces (API), instruction sets, computer code, computer code, code segments, computer code segments, words, values, symbols or any combination thereof. Determining whether a modality is implemented using hardware elements and/or software elements can vary depending on any number of factors, such as desired computational speed, power levels, heat tolerances, cycle provision. throughput, input data rates, output data rates, memory resources, data bus speeds, and other design or performance constraints.
[00234] In some cases, several modalities can be implemented in the form of an article of manufacture. The article of manufacture may include computer readable storage media arranged to store logic, instructions and/or data for performing various operations of one or more embodiments. In various embodiments, for example, the article of manufacture may comprise a magnetic disk, an optical disk, flash memory, or firmware containing computer program instructions suitable for execution by a general-purpose processor or application-specific processor. The modalities, however, are not limited in this context.
[00235] The Applicant is also the owner of the following patent applications, each of which is incorporated herein by reference in their entirety: US Patent Application Serial No. 13/536,271, filed on 28 June 2012 and titled "Flexible Drive Member" (Attorney Document No. END7131USNP/120135), US Patent Application Serial No. 13/536,288, filed June 28, 2012 and titled "Multi-Functional Powered Surgical Device with External Dissection Features" (Attorney Document No. END7132USNP/120136), US Patent Application Serial No. 13/536,295, filed June 28, 2012 and titled "Rotary Actuatable Closure Arrangement for Surgical End Effector" (No. Attorney Document No. END7134USNP/120138), US Patent Application Serial No. 13/536,326, filed on June 28, 2012 and entitled "Surgical End Effectors Having Angled Tissue-Contacting Surfaces" (Attorney Document No. END7135USNP /120139), patent application US Serial No. 13/536,303, filed June 28, 2012 and entitled "Interchangeable End Effector Coupling Arrangement" (Attorney Document No. END7136USNP/120140), US Patent Application Serial No. 13/536,393, filed on June 28, 2012 and titled "Surgical End Effector Jaw and Electrode Configurations" (Attorney's Document No. END7137USNP/120141), US Patent Application Serial No. 13/536,362, filed on June 28, 2012 and titled "Multi-Axis Articulating and Rotating Surgical Tools" (Attorney Document No. END7138USNP/120142), and US Patent Application Serial No. 13/536,417, filed June 28, 2012 and titled "Electrode Connections for Rotary Driven Surgical Tools" (attorney's document number END7149USNP/120153).
[00236] It should be understood that the terms "proximal" and "distal" are used throughout the specification with reference to a clinician manipulating an end of an instrument used to treat a patient. The term "proximal" refers to the portion of the instrument closest to the physician and the term "distal" refers to the portion located furthest from the physician. It is further understood that for the sake of brevity and clarity, spatial terms such as "vertical", "horizontal", "upwards" or "downwards" may be used in the present invention in relation to the illustrated embodiments. However, surgical instruments can be used in many orientations and positions, and these terms are not intended to be limiting or absolute.
[00237] Various modalities of surgical instruments and robotic surgical systems are described herein. Those skilled in the art will understand that the various modalities described herein can be used with the surgical instruments and robotic surgical systems described. The descriptions are provided for example purposes only, and those skilled in the art will understand that the modalities presented are not limited to the devices described herein, but may be used with any compatible surgical instrument or robotic surgical system.
[00238] References made throughout the specification to "several modalities", "some modalities", "an exemplary modality" or "one modality" mean that a particular element, structure or characteristic described in connection with the modality is included in at least one exemplary modality. Therefore, the appearance of the phrases "in various modalities", "in some modalities", "in an exemplary modality", or "in a modality" in places from the beginning to the end of the specification are not necessarily all referring to the same modality. . Furthermore, the specific features, structures or features illustrated or described in connection with an exemplary embodiment may be combined, in whole or in part, with elements, structures or features of one or more other embodiments, without limitation.
[00239] While various embodiments of the present invention have been illustrated by describing the various embodiments, and while the illustrative embodiments have been described in considerable detail, it is not the Applicant's intention to restrict or in any way limit the scope of the claims in attached to these details. Additional advantages and modifications may be readily available to those skilled in the art. For example, each of the modalities presented can be used in endoscopic procedures, laparoscopic procedures, as well as open procedures, without limitations on their intended use.
[00240] It should be understood that at least some of the figures and descriptions presented here have been simplified to illustrate elements that are relevant to a clear understanding of the description, while eliminating, for purposes of clarity, other elements. Those skilled in the art will recognize, however, that these and other elements may be desirable. However, due to the fact that such elements are well known in the art and due to the fact that they do not facilitate a better understanding of the description, a discussion of such elements is not provided here.
[00241] While various modalities have been described, it will be evident, however, that various modifications, alterations and adaptations to these modalities may occur to those skilled in the art, with some or all of the advantages of the description being obtained. For example, according to various embodiments, a single component may be replaced by multiple components, and multiple components may be replaced by a single component, to perform one or more specified functions. This order is therefore intended to cover all such modifications, alterations and adaptations, without departing from the scope and spirit of the description as defined by the appended claims.
[00242] Any patent, publication or other descriptive material, in whole or in part, which is said to be incorporated by reference into the present invention is incorporated by the present invention only to the extent that the materials incorporated do not conflict with existing definitions, statements or other descriptive material presented in this description. Accordingly, and to the extent necessary, the description as explicitly set forth herein supersedes any conflicting material incorporated herein by reference. Any material, or portion thereof, which is incorporated by reference in the present invention, but which conflicts with existing definitions, statements, or other descriptive materials set forth herein, will be incorporated herein only to the extent that no conflict will appear between the embedded material and the existing description material.

权利要求:
Claims (22)
[0001]
1. A pivotable ultrasonic surgical instrument, characterized in that it comprises: a pivotable harmonic waveguide (802, 1402), comprising: a first drive section (1404) comprising a proximal end and a distal end, the proximal end configured to connect to an ultrasonic transducer (16); a first flexible waveguide (1406) coupled to the distal end of the first drive section (1404); an end actuator (1408) extending distally from the first flexible waveguide (1406); a pivot actuator (1420) for flexing the first flexible waveguide (1406); and a full curl limiter configured to prevent the first flexible waveguide (1406) from exceeding a predetermined condition; wherein the predetermined condition comprises a local radius of curvature to prevent a transmission of ultrasonic energy to the pivotable harmonic waveguide (802, 1402) when the first flexible waveguide (1406) exceeds the predetermined condition.
[0002]
2. Articulating ultrasonic surgical instrument, according to claim 1, characterized in that: the distal end of the first drive section (1404) and a proximal end of the first flexible waveguide (1406) are located in an antinode; and wherein a distal end of the first flexible waveguide (1406) and a proximal end of the end actuator (1408) are located at an antinode.
[0003]
3. Articulating ultrasonic surgical instrument, according to claim 1, characterized in that: the distal end of the first drive section (1404) and a proximal end of the first flexible waveguide (1406) are located at a node; and wherein a distal end of the first flexible waveguide (1406) and a proximal end of the end actuator (1408) are located at a node.
[0004]
4. Articulating ultrasonic surgical instrument, according to claim 1, characterized in that a center of the first flexible waveguide (1406) is located in an antinode.
[0005]
5. Articulating ultrasonic surgical instrument, according to claim 1, characterized in that the first flexible waveguide (1406) comprises a circular rod.
[0006]
6. Articulating ultrasonic surgical instrument, according to claim 1, characterized in that the first flexible waveguide (1406) comprises a metal loop (1206).
[0007]
7. Articulating ultrasonic surgical instrument, according to claim 6, characterized in that it comprises at least one slit (1214) formed in the metal loop (1206).
[0008]
8. Articulating ultrasonic surgical instrument, according to claim 1, characterized in that it comprises: a second drive section coupled to the distal end of the first flexible waveguide (1406A) along the longitudinal axis of the articulated harmonic waveguide (802, 1402); and a second flexible waveguide (1406B) coupled to a distal end of the second drive section and a proximal end of the end actuator (1408).
[0009]
9. Articulating ultrasonic surgical instrument, according to claim 8, characterized in that it comprises: a block tip (2352) comprising a proximal end and a distal end; and a surgical block (2354) located at the distal end of the block tip (2352); wherein the block tip (2352) comprises a first tip curvature and a second tip curvature, wherein the first tip curvature is equal to a curvature of the first flexible waveguide (1406), and wherein the second tip curvature is equal to a curvature of the first flexible waveguide (1406). tip curvature is equal to a curvature of the second flexible waveguide.
[0010]
10. Articulating ultrasonic surgical instrument, according to claim 1, characterized in that the articulating actuator (1420) comprises: a first flange (1418B) located at the distal end of the first flexible waveguide (1406); a second flange (1418A) located at the proximal end of the first flexible waveguide (1406); and at least one control member (1420) mating the first flange (1418B) and the second flange (1418A).
[0011]
11. Articulating ultrasonic surgical instrument, according to claim 10, characterized in that: the at least one control member (1420) comprises at least one handle extending proximally from the first flange (1418B), the at least a cable connected to the first flange (1418B) and the second flange (1418A), wherein tensioning the at least one cable in a proximal direction causes the first flexible waveguide (1406) to flex.
[0012]
12. Articulating ultrasonic surgical instrument, according to claim 1, characterized in that the local curvature radius is limited so that:
[0013]
13. Articulating ultrasonic surgical instrument, according to claim 1, characterized in that the local curvature radius is limited so that:
[0014]
14. Articulating ultrasonic surgical instrument, according to claim 1, characterized in that the total curvature limiter comprises an electrical pass limiter (1630) to prevent the transmission of ultrasonic energy to the articulated harmonic waveguide (802, 1402 ) when the first flexible waveguide (1406) exceeds the predetermined condition.
[0015]
15. Articulating ultrasonic surgical instrument according to claim 1, characterized in that the total curvature limiter comprises a viewing window (1730) comprising one or more graduations, wherein the viewing window (1730) provides an indication visual of a current local radius of curvature with respect to the predetermined condition.
[0016]
16. Articulating ultrasonic surgical instrument, according to claim 1, characterized in that the total curvature limiter comprises a resonance frequency displacement tracker (1830) configured to generate a control signal when the first flexible waveguide (1406) exceeds the predetermined condition where the control signal prevents transmission of ultrasonic energy to the pivotable harmonic waveguide (802, 1402).
[0017]
17. Articulating ultrasonic surgical instrument, according to claim 1, characterized in that it comprises: a flexible sheath arranged on the articulated harmonic waveguide (802, 1402); a clamp arm pivotally coupled to the pivotable harmonic waveguide (802, 1402); wherein the linkage actuator (1420) comprises: a first flexible strip (2420A); a second flexible strip (2420B); a hinge member (2421) comprising a first side and a second side, wherein the first and second flexible strips (2420A, 2420B) are coupled to respective first and second sides of the hinge member (2421), wherein the first and second second flexible strips (2420A, 2420B) are translatable in a proximal direction and a distal direction to pivot the gripper arm, and wherein the pivot member (2421) is pivotable about a central point to pivot the flexible sheath.
[0018]
18. Articulating ultrasonic surgical instrument, according to claim 17, characterized in that it comprises one or more bending features configured to provide a tendency to bend.
[0019]
19. Surgical instrument, characterized by the fact that it comprises: a handle (12); an ultrasonic transducer (16) located on the handle (12); a pivotable harmonic waveguide (802, 1402) coupled to the ultrasonic transducer (16), the pivotable harmonic waveguide (802, 1402) comprising: a first drive section (1404) comprising a proximal end and a distal end , the proximal end configured to connect to an ultrasonic transducer (16); a first flexible waveguide (1406) coupled to the distal end of the first drive section (1404); and an end actuator (1408) extending distally from the first flexible waveguide (1406); a pivot actuator (1420) for flexing the first flexible waveguide (1406), and a full bend limiter configured to prevent the first flexible waveguide (1406) from exceeding a predetermined condition; wherein the predetermined condition comprises a local radius of curvature to prevent transmission of ultrasonic energy to the pivotable harmonic waveguide (802, 1402) when the first flexible waveguide (1406) exceeds the predetermined condition.
[0020]
20. Articulating ultrasonic surgical instrument, according to claim 19, characterized in that: the distal end of the first drive section (1404) and a proximal end of the first flexible waveguide (1406) are located in an antinode; and wherein a distal end of the first flexible waveguide (1406) and a proximal end of the end actuator (1408) are located at an antinode.
[0021]
21. Articulating ultrasonic surgical instrument, according to claim 19, characterized in that a center of the first flexible waveguide (1406) is located in an antinode.
[0022]
22. Robotic surgical instrument, characterized in that it comprises: an instrument mounting portion (558) configured for mounting in a robotic surgical system, the instrument mounting portion (558) comprising an interface for mechanically and electrically connecting to the robotic surgical instrument adapted for use with the robotic surgical system; an ultrasonic transducer (16) located in the instrument mounting portion (558); a pivotable harmonic waveguide (802, 1402) coupled to the ultrasonic transducer (16), the pivotable harmonic waveguide (802, 1402) comprising: a first drive section (1404) comprising a proximal end and a distal end , the proximal end configured to connect to an ultrasonic transducer (16); a first flexible waveguide (1406) coupled to the distal end of the first drive section (1404); and an end actuator (1408) extending distally from the first flexible waveguide (1406); and a pivot actuator (1420) for flexing the first flexible waveguide (1406); and a full curl limiter configured to prevent the first flexible waveguide (1406) from exceeding a predetermined condition; wherein the predetermined condition comprises a local radius of curvature to prevent a transmission of ultrasonic energy to the pivotable harmonic waveguide (802, 1402) when the first flexible waveguide (1406) exceeds the predetermined condition.

类似技术:

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同族专利:

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公开号 | 公开日

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BR112015009030A2|2017-07-04|

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JP6430387B2|2018-11-28|

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US20220071655A1|2022-03-10|

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KR20150079715A|2015-07-08|

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US20150157355A1|2015-06-11|

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WO2014066044A1|2014-05-01|

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US9095367B2|2015-08-04|

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CN104736076B|2017-09-29|

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EP2908741A1|2015-08-26|

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US11179173B2|2021-11-23|

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US20180098785A1|2018-04-12|

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CA2889108A1|2014-05-01|

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AU2013335118A1|2015-04-30|

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EP3847981A1|2021-07-14|

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US9795405B2|2017-10-24|

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US20140114334A1|2014-04-24|

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EP2908741B1|2021-02-24|

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CA2889108C|2020-12-08|

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JP2016500536A|2016-01-14|

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KR101782814B1|2017-09-28|

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AU2013335118B2|2017-09-07|

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CN104736076A|2015-06-24|

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法律状态:
2018-03-27| B15K| Others concerning applications: alteration of classification|Ipc: A61B 17/32 (2006.01) |

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2018-11-21| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|

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2019-12-03| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|

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2021-06-08| B06A| Patent application procedure suspended [chapter 6.1 patent gazette]|

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2021-11-03| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|

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2022-01-11| B16A| Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 09/10/2013, OBSERVADAS AS CONDICOES LEGAIS. |

优先权:

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申请号 | 申请日 | 专利标题

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US13/657,553|US9095367B2|2012-10-22|2012-10-22|Flexible harmonic waveguides/blades for surgical instruments|

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US13/657,553|2012-10-22|

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PCT/US2013/064036|WO2014066044A1|2012-10-22|2013-10-09|Flexible harmonic waveguides/blades for surgical instruments|

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