systems and methods for controlling control circuits for independent power supply in segmented secti

专利摘要:
The present description features a surgical instrument that includes an end actuator that has a first jaw, a second jaw, which is movable in relation to the first jaw, and at least one electrode in the first jaw. The surgical instrument also includes a control circuit configured to supply electrosurgical energy to at least one electrode and an electrically connected conductor between the end actuator and the control circuit. The control circuit includes a drive shaft control segment and an electrosurgical energy control segment. The drive shaft control segment is configured to provide a control signal for operation from the end actuator to the end actuator through the first electrical conductor. The electrosurgical energy control segment is configured to supply electrosurgical energy to at least one electrode through the electrical conductor.
公开号:BR112019027006A2
申请号:R112019027006-0
申请日:2018-06-13
公开日:2020-06-30
发明作者:Jeffrey D. Messerly；David C. Yates；Jason L. Harris；Frederick E. Shelton Iv；Mark A. Davison
申请人:Ethicon Llc；
IPC主号:

专利说明:

[0001] [0001] The present invention relates to surgical instruments and, in various circumstances, surgical instruments for stapling and cutting, and staple cartridges for them, which are designed for stapling and cutting fabrics. BACKGROUND
[0002] [0002] In several open, endoscopic and / or laparoscopic surgeries, for example, it may be desirable to clot, seal and / or fuse the tissue. A tissue sealing method relies on the application of energy, such as electrical energy, to, for example, tissue captured or trapped within an end actuator or an end actuator set of a surgical instrument to cause thermal effects within of the fabric. Several monopolar and bipolar (RF) radiofrequency surgical instruments and surgical techniques have been developed for such purposes. In general, the application of RF energy to the captured tissue can raise the temperature of the tissue and, as a result, the energy can at least partially denature the proteins inside the tissue. Such proteins, such as collagen, for example, can be denatured into a proteinaceous amalgam that mixes and fuses or seals proteins as they break down. As the treated region recovers over time, this biological seal can be reabsorbed by the body's wound healing process.
[0003] [0003] In certain provisions of a bipolar radio frequency (RF) surgical instrument, the surgical instrument may comprise an opposing first and second jaw, each jaw may comprise an electrode. In use, the fabric can be captured between the claws so that energy can flow between the electrodes in the opposite claws and through the fabric positioned between them. Such instruments may have to seal many types of tissues, such as anatomical structures with walls with thick or irregular fibrous content, bundles of uneven anatomical structures and / or substantially thick or thin anatomical structures. SUMMARY
[0004] [0004] In one aspect, a surgical instrument includes an end actuator that has a first jaw with a distal portion and an adjacent portion, a second jaw that is movable in relation to the first jaw and at least one electrode in the first jaw. The surgical instrument also includes a control circuit configured to supply electrosurgical energy to at least one electrode and an electrical conductor electrically connected between the end actuator and the control circuit. The control circuit includes a drive shaft control segment and an electrosurgical energy control segment. The drive shaft control segment is configured to provide a control signal for operating the end actuator to the end actuator via the first electrical conductor. The electrosurgical energy control segment is configured to supply electrosurgical energy to at least one electrode through the electrical conductor.
[0005] [0005] In one aspect, a surgical system includes a radio frequency energy (RF) generator, a grip body, an end actuator, a control circuit, and an electrical conductor electrically connected between the actuator. end and the control circuit. The end actuator includes a first jaw that has a distal portion and an adjacent portion, a second jaw that is movable with respect to the first jaw and at least one electrode in the first jaw. The control circuit is configured to supply RF energy from the RF energy generator, to at least one electrode. The control circuit includes a drive shaft control segment and an RF control segment. The drive shaft control segment is configured to provide a control signal for operation from the end actuator to the end actuator via the electrical conductor. The RF control segment is configured to supply RF energy to at least one electrode through the electrical conductor. FIGURES
[0006] [0006] The innovative features of the aspects described here are presented with particularity in the attached claims. However, these aspects, both in terms of organization and methods of operation, can be better understood by referring to the description below, taken in conjunction with the attached drawings.
[0007] [0007] Figure 1 is a perspective view of a surgical system that includes a handle set attached to an interchangeable surgical tool set that is configured to be used in conjunction with conventional surgical clip / clamp cartridges and radio frequency (RF) cartridges according to one aspect of this description.
[0008] [0008] Figure 2 is an exploded perspective view of the surgical system in Figure 1, according to an aspect of this description.
[0009] [0009] Figure 3 is another perspective view explored of portions of the handle set and the interchangeable surgical tool set of Figures 1 and 2, according to one aspect of this description.
[0010] [0010] Figure 4 is an exploded view of a proximal portion of the interchangeable surgical tool set in Figures
[0011] [0011] Figure 5 is another exploded view of a distal portion of the interchangeable surgical tool set of Figures 1 to 4, according to an aspect of this description.
[0012] [0012] Figure 6 is a partial cross-sectional view of the end actuator represented in Figures 1 to 5 that supports an RF cartridge in it and with the tissue stuck between the cartridge and the anvil, according to an aspect of this description.
[0013] [0013] Figure 7 is a partial cross-sectional view of the shoulder of Figure 6, according to an aspect of this description.
[0014] [0014] Figure 8 is another exploded view of a portion of the interchangeable surgical tool set of Figures 1 to 5, according to an aspect of this description.
[0015] [0015] Figure 9 is another exploded view of the interchangeable surgical tool set and the handle set of Figures 1 and 2, according to an aspect of the present description.
[0016] [0016] Figure 10 is a perspective view of an RF cartridge and an elongated channel of the interchangeable surgical tool set of Figures 1 to 5, according to an aspect of that description.
[0017] [0017] Figure 11 is a partial perspective view of portions of the RF cartridge and the elongated channel of Figure 10 with a knife member, according to an aspect of this description.
[0018] [0018] Figure 12 is another perspective view of the RF cartridge installed in the elongated channel of Figure 10 and illustrating a portion of a flexible drive shaft circuit arrangement, in accordance with an aspect of this description.
[0019] [0019] Figure 13 is an end view in cross section of the RF cartridge and the elongated channel of Figure 12 taken along lines 13-13 in FIG. 12, according to an aspect of the present description.
[0020] [0020] Figure 14 is a top cross-sectional view of a portion of the interchangeable surgical tool set in Figures 1 and 5 with its end actuator in an articulated position, according to an aspect of the present description .
[0021] [0021] Figure 15 is a perspective view of an integrated circuit board and RF generator arrangement plus configuration, in accordance with an aspect of the present description.
[0022] [0022] Figures 16A and 16B are a block diagram of a control circuit for the surgical instrument of Figure 1 occupying two drawing sheets, according to one aspect of the present description.
[0023] [0023] Figure 17 is a block diagram of the control circuit of the surgical instrument of Figure 1 illustrating interfaces between the handle assembly, the feeding assembly and the handle assembly and the interchangeable drive shaft assembly. , in accordance with an aspect of the present description.
[0024] [0024] Figure 18 is a schematic diagram of a surgical instrument configured to control various functions, according to an aspect of this description.
[0025] [0025] Figure 19 is a schematic top view of a claw on an end actuator, in accordance with an aspect of the present description.
[0026] [0026] Figure 20 is a graph representing the voltage applied to the electrodes as a function of time, according to an aspect of the present description.
[0027] [0027] Figure 21 illustrates a block diagram of a surgical system programmed to transmit energy and control signals to an end actuator, according to one aspect of this description.
[0028] [0028] Figure 22 is a logical flowchart representing a process of a control program or a logical configuration for operating the surgical instrument, according to an aspect of the present description.
[0029] [0029] Figure 23 is a graph of a tissue impedance curve as a function of time, according to an aspect of this description.
[0030] [0030] Figure 24 is a graph representing an example of a motor voltage curve, according to an aspect of the present description.
[0031] [0031] Figure 25 is a logical flowchart representing a process of a control program or a logical configuration for operating the surgical instrument, according to an aspect of the present description.
[0032] [0032] Figure 26 is a graph of a tissue impedance curve as a function of time, according to an aspect of the present description.
[0033] [0033] Figure 27 is a graph representing an example of a motor voltage curve, according to an aspect of the present description. DESCRIPTION
[0034] [0034] The applicant for the present application holds the following patent applications filed simultaneously with the same and which are each incorporated in this document as a reference in their respective totalities:
[0035] [0035] Power of attorney document number END8184USNP / 170063, entitled SURGICAL SYSTEM COUPLABLE WITH STAPLE CARTRIDGE AND RADIO FREQUENCY CARTRIDGE, AND METHOD OF USING SAME, by the inventors Jeffrey D. Messerly et al., Deposited on June 28, 2017.
[0036] [0036] Power of attorney document number END8183USNP / 17006A, entitled SYSTEMS AND METHODS OF DISPLAYING SURGICAL INS-
[0037] [0037] Power of attorney document number END8190USNP / 170065, entitled SHAFT MODULE CIRCUITRY ARRANGEMENTS, by the inventors Jeffrey D. Messerly et al., Filed on June 28, 2017.
[0038] [0038] Power of attorney document number END8185USNP / 170067, entitled FLEXIBLE CIRCUIT ARRANGEMENT FOR SURGICAL FAS- TENING INSTRUMENTS, by the inventors Jeffrey D. Messerly et al., Filed on June 28, 2017.
[0039] [0039] power of attorney document END8188USNP / 170068, entitled SURGICAL SYSTEM COUPLEABLE WITH STAPLE CARTRIDGE AND RADIO FREQUENCY CARTRIDGE, AND HAVING A PLURALITY OF RADIO-FREQUENCY ENERGY RETURN PATHS, by the inventors Jeffrey D. Messerly et al ., deposited on June 28,
[0040] [0040] Proxy document number END8181USNP / 170069, entitled SYSTEMS AND METHODS FOR CONTROLLING CONTROL CIRCUITS FOR AN INDEPENDENT ENERGY DELIVERY OVER SEGMENTED SECTIONS, by inventors David C. Yates et al., Deposited on 28 June 2017.
[0041] [0041] power of attorney document END8187USNP / 170070, entitled SURGICAL END EFFECTOR FOR APPLYING ELECTROSUR-
[0042] [0042] power of attorney document END8182USNP / 170071, entitled ELECTROSURGICAL CARTRIDGE FOR USE IN THIN PRO-FILE SURGICAL CUTTING AND STAPLING INSTRUMENT, by investors Tamara Widenhouse et al., Deposited on June 28,
[0043] [0043] Power of attorney document number END8186USNP / 170072, entitled SURGICAL END EFFECTOR TO ADJUST JAW COMPRES-SION, by the inventors Frederick E. Shelton, IV et al., Filed on June 28, 2017.
[0044] [0044] power of attorney document END8224USNP / 170073, entitled CARTRIDGE ARRANGEMENTS FOR SURGICAL CUTTING
[0045] [0045] Proxy document number END8229USNP / 170074, entitled SURGICAL CUTTING AND FASTENING INSTRUMENTS WITH DUAL POWER SOURCES, by investors Jeffrey D. Meslyly et al., Deposited on June 28, 2017.
[0046] [0046] Electrosurgical devices can be used in many surgical operations. Electrosurgical devices can apply electrical energy to the tissue to treat the tissue. An electrosurgical device can comprise an instrument that has a distally mounted end actuator that comprises one or more electrodes. The end actuator can be positioned against the fabric, so that electric current can be introduced into the fabric. Electrosurgical devices can be configured for monopolar or bipolar operation. During monopolar operation, current can be introduced into the tissue by an electrode (or source) active on the end actuator and returned via a return electrode.
[0047] [0047] The return electrode can be a grounding block located separately on a patient's body. During bipolar operation, current can be introduced into the tissue and returned from it, respectively, through the active and return electrodes of the end actuator. The end actuator can include two or more claw members. At least one of the claw members can have at least one electrode. At least one claw can be movable from a spaced position of the opposite claw to receive tissue in a position in which the space between the claw members is less than that of the first position. This movement of the movable claw can compress the retained tissue between it. The heat generated by the current flow through the fabric in combination with the compression obtained by the movement of the claw can form hemostatic seals within the fabric and / or between fabrics and, therefore, can be particularly useful for sealing vessels blood, for example. The end actuator can comprise a cutting member. The cutting element can be movable in relation to the fabric and the electrodes to transpose the fabric.
[0048] [0048] Electrosurgical devices may also include mechanisms for securing the tissue, such as a stapling device and / or mechanisms for cutting the tissue, such as a tissue knife. An electrosurgical device may include a drive shaft to place the end actuator in a position adjacent to the tissue being subjected to treatment. The drive shaft can be straight or curved, foldable or non-foldable. In an electrosurgical device that includes a straight and foldable drive shaft, the drive shaft can have one or more articulated joints to allow controlled flexing of the drive shaft. Such joints may allow a user of the electrosurgical device to place the end actuator in contact with the tissue at an angle to the drive axis when the tissue being treated is not readily accessible using an electrosurgical device that has an axis non-folding straight drive.
[0049] [0049] The electrical energy applied by the electrosurgical devices can be transmitted to the instrument by a generator in communication with the handpiece. The electrical energy can be in the form of radio frequency energy ("RF"). RF energy is a form of electrical energy that can be in the frequency range of 200 kilohertz (kHz) to 1 megahertz (MHz). In application, an electrosurgical instrument can transmit RF energy at low frequency through the tissue, which causes friction, or ionic agitation, that is, resistive heating, which, therefore, increases the tissue temperature. Due to the fact that a precise boundary is created between the affected tissue and the surrounding tissue, surgeons can operate with a high level of precision and control, without sacrificing adjacent non-target tissue. The low operating temperatures of the RF energy are useful for removing, shrinking or sculpting soft tissues while simultaneously cauterizing blood vessels. RF energy works particularly well in connective tissue, which mainly comprises collagen and shrinks when it comes in contact with heat.
[0050] [0050] The RF energy can be in a frequency range described in EN 60601-2-2: 2009 + A11: 2011, Definition 201.3.218 - HIGH FREQUENCY. For example, the frequency in monopolar RF applications can typically be restricted to less than 5 MHz. However, in bipolar RF applications, the frequency can be almost any one. Frequencies above 200 kHz can typically be used for monopolar applications to avoid unwanted nerve and muscle stimulation, which would result from the use of a low frequency current. Lower frequencies can be used for bipolar applications if the risk analysis shows that the possibility of neuromuscular stimulus has been mitigated to an acceptable level. Typically, frequencies above 5 MHz are not used in order to minimize problems associated with high frequency dispersion currents. Higher frequencies can, however, be used in the case of bipolar applications. It is generally accepted that 10 mA is the lower threshold for thermal effects on tissue.
[0051] [0051] Figures 1 and 2 depict a motor-driven surgical system 10 that can be used to perform a variety of different surgical procedures. In the illustrated arrangement, the surgical system 10 comprises an interchangeable surgical tool set 1000 which is operationally coupled to a handle set
[0052] [0052] In the illustrated aspect, the handle assembly 500 may comprise a handle compartment 502 that includes a pistol handle portion 504 that can be held and handled by the physician. As will be briefly discussed below, the handle set 500 operationally supports a plurality of drive systems, which are configured to generate and apply various control movements to the corresponding portions of the interchangeable surgical tool set 1000. As shown in Figure 2, the handle assembly 500 may also include a handle structure 506 that operationally supports the plurality of drive systems. For example, the 506 handle structure can operationally support a "first" drive system or closing drive system, generally referred to as 510, which can be used to apply closing and opening movements to the interchangeable surgical tool set. 1000. In at least one way, the closing drive system 510 may include an actuator in the form of a closing trigger 512, articulated supported by the handle structure 506. This arrangement allows the closing trigger 512 is handled by a physician, so that when the physician holds the pistol grip portion 504 of the handle assembly 500, the closing trigger 512 can be easily rotated from an initial or "not acted" position to a "actuated" position and, more particularly, to a fully compressed or fully acted position.
[0053] [0053] In at least one form, the handle assembly 500 and the handle structure 506 can operationally support another drive system called in the present invention a trigger drive system 530, which is configured to apply trigger movements to the corresponding portions of the interchangeable surgical tool set that is attached to it. As described in detail in US Patent Application publication No. 2015/0272575, the 530 firing drive system can employ an electric motor 505 which is located in the pistol grip portion of the 500 grip assembly 500 In many ways, the 505 motor can be a brushless DC drive motor, with a maximum speed of approximately 25,000 RPM, for example. In other arrangements, the 505 motor may include a brushless motor, a wireless motor, a synchronous motor, a stepper motor or any other suitable type of electric motor. The motor 505 can be powered by a power supply 522 which, in one form, can comprise a removable battery. The power source can support a plurality of lithium ion batteries ("Li ions") or other suitable ones therein. Several batteries connected in series or in parallel can be used as the 522 power source for the surgical system 10. In addition, the 522 power source can be replaceable and / or rechargeable.
[0054] [0054] The electric motor 505 is configured to axially drive a longitudinally movable driving member 540 (Figure 3) in the distal and proximal directions depending on the polarity of the motor. For example, when the 505 electric motor is driven in a direction of rotation, the longitudinally movable drive member will be axially driven in a distal "DD" direction. When motor 505 is driven in the opposite rotating direction, the longitudinally movable drive member 540 will be driven axially in the proximal direction "PD". The handle assembly 500 may include a key 513 that can be configured to reverse the polarity applied to the electric motor 505 by the power source 522 or otherwise control the motor
[0055] [0055] In at least one form, the longitudinally movable drive member 540 may have a tooth rack 542 formed thereon for engagement with a corresponding drive arrangement (not shown) that interacts - face with the engine. See Figure 3. Additional details regarding those features can be found in US Patent Application publication No. 2015/0272575. In at least one arrangement, however, the longitudinally movable drive member is insulated to protect it from inadvertent RF energy. At least one shape also includes a manually actuated "ejection" set, which is configured to allow the physician to manually retract the longitudinally movable drive member, should the 505 engine stop running. The ejection assembly may include a lever or ejection handle assembly that is stored inside the handle assembly 500 under a removable door 550. See Figure 2. The lever can be configured to be manually pivoted in ratchet hitch. with teeth on the drive member. In this way, the physician can manually retract drive member 540 using the ejection handle assembly to engage the drive member in the proximal "PD" direction. US Patent Application No.
[0056] [0056] In the illustrated aspect, the interchangeable surgical tool set 1000 includes a surgical end actuator 1500 comprising a first jaw 1600 and a second jaw 1800. In one arrangement, the first jaw comprises an elongated channel 1602 which is configured to operationally support a conventional surgical (mechanical) staple / fastener cartridge 1400 (Figure 4) or a 1700 radio frequency (RF) cartridge (Figures 1 and 2) in it. The second claw 1800 comprises an anvil 1810 which is pivotally supported in relation to the elongated channel 1602. The anvil 1810 can be selectively moved towards, and in the opposite direction to the surgical cartridge supported in the elongated channel 1602 between the open and closed positions through the actuation of the closing drive system 510. In the illustrated arrangement, the anvil 1810 is pivotally supported over a proximal end portion of the elongated channel 1602 for selective pivoting displacement around a pivot axis that is transversal to the geometric axis of the drive axis SA. The actuation of the closing drive system 510 can result in the distal axial movement of a proximal closing member or proximal closing tube 1910 that is attached to a 1920 hinge connector.
[0057] [0057] Returning to Figure 4, the hinge connector 1920 includes the upper and lower lugs 1922, 1924 that project distally from a distal end of the hinge connector 1920 to be movably coupled to an actuation closing sleeve. - distal closure tube segment or segment 1930. See Figure 3. The distal closure tube segment 1930 includes an upper protrusion 1932 and a lower protrusion (not shown) that project proximally from a pro - ximal of the same. An upper double pivot link 1940 includes proximal and distal pins 1941, 1942 that engage the corresponding holes in the upper protrusions 1922, 1932 of the articulation connector 1920 and the distal closing tube segment 1930, respectively. Similarly, a lower double pivot link 1944 includes the proximal and distal pins 1945, 1946 that engage corresponding holes in the lower tabs 1924 of the hinge connector 1920 and the distal closing tube segment 1930, respectively.
[0058] [0058] Still referring to Figure 4, in the illustrated example, the distal closing tube segment 1930 includes positive claw opening features or flaps 1936, 1938 that correspond to the corresponding portions of the anvil 1810 to apply opening movements to the anvil 1810, as the distal closing tube segment 1930 is retracted in the proximal direction PD to an initial position. Additional details related to the opening and closing of the 1810 anvil can be found in the US patent application, entitled SURGICAL INSTRUMENT WITH POSITIVE JAW OPENING FEATURES, power of attorney document number END8208USNP / 170096, filed on the same date of this document, whose The description is hereby incorporated by reference in the present invention.
[0059] [0059] As shown in Figure 5, in at least one arrangement, the interchangeable surgical tool set 1000 includes a tool frame set 1200 comprising a tool frame 1210 that operationally supports a nozzle set 1240 on the same. As further discussed in detail in the US Patent Application entitled SURGICAL INSTRUMENT WITH AXI-ALLY MOVABLE CLOSURE MEMBER, power of attorney document END8209USNP / 170097, filed on the same date as this document, which is hereby incorporated by reference in in its entirety, the tool chassis 1210 and the nozzle arrangement 1240 facilitate the rotation of the surgical end actuator 1500 about a geometric axis of the SA drive shaft in relation to the tool chassis 1210. Such rotational displacement is represented by the arrow R in Figure 1. As also shown in Figures 4 and 5, the interchangeable surgical tool set 1000 includes a central column assembly 1250 that operationally supports the proximal closing tube 1910 and is coupled to the actuator of surgical end
[0060] [0060] As shown in Figure 4, the upper center column segment 1251 ends at an upper pin assembly feature 1260 and the lower center column segment 1252 ends at a lower pin assembly feature 1270. The upper pin assembly feature 1260 is formed with a pin slot 1262 in it which is adapted to support a mountable upper link 1264 in it. Similarly, the lower pin assembly feature 1270 is formed by a pin slot 1272 in it which is adapted to mount a lower assembly link 1274 thereon. The upper mounting link 1264 includes a pivot socket 1266 in which it is displaced from the axis of the drive shaft SA. The pivot socket 1266 is adapted to pivot a pivot pin 1634 which is formed in a cap retainer or channel anvil 1630 which is fixed to a proximal end portion 1610 of the elongated channel 1602. The link of lower assembly 1274 includes a lower pivot pin 1276 which is adapted to be received within a pivot hole 1611 formed in the proximal end portion 1610 of the elongated channel 1602. The lower pivot pin 1276 as well as the pivot hole 1611 is displaced in relation to the geometric axis of the drive shaft SA. The lower pivot pin 1276 is vertically aligned with the pivot socket 1266 to define the AA pivot geometry axis around which the surgical end actuator 1500 can pivot with respect to the SA drive shaft geometry axis. See Figure 1. Although the hinge axis AA is transversal to the hinge axis of the drive shaft SA, in at least one arrangement, the hinge axis AA is laterally displaced from it and does not cross the axis. drive shaft geometry axis SA.
[0061] [0061] Returning to Figure 5, a proximal end 1912 of the proximal closing tube 1910 is rotationally coupled to a closing boom 1914 by a connector 1916 which is seated in an annular groove 1915 in the proximal closing tube segment
[0062] [0062] The trigger drive system 530 in the handle set 500 is configured to be operationally coupled to a trigger system 1300 that is operationally supported in the interchangeable surgical tool set 1000. The trigger system 1300 can include a portion intermediate firing drive axis 1310 which is configured to be axially moved in the distal and proximal directions in response to the corresponding firing movements applied to it by the firing drive system 530. See Figure 4. As shown in Figure 5, a proximal end 1312 of the middle portion of the firing drive shaft 1310 has a firing pin fixing pin 1314 formed therein that is configured to be seated on a 544 base (Figure 3) located at the distal end of the longitudinally movable drive member 540 of the trigger drive system 530 within the handle 500. This arrangement facilitates the axial movement of the intermediate portion of the trigger drive shaft 1310 by actuation of the trigger drive system 530. In the example shown, the intermediate portion of the trigger drive shaft 1310 is configured for attachment to a distal cutting portion or knife bar 1320. As shown in Figure 4, knife bar 1320 is connected to a firing member or knife member 1330. Knife member 1330 comprises a knife body 1332 which operationally supports a fabric cutting blade 1334 therein. The knife body 1332 may additionally include flaps or anvil engaging features 1336 and channel engaging features or a foot 1338. Anvil engaging features 1336 can serve to apply additional closing movements to the anvil 1810 as the knife member 1330 is advanced distally through end actuator 1500.
[0063] [0063] In the illustrated example, the surgical end actuator 1500 is selectively pivotable about the geometric hinge axis AA by a hinge system 1360. In one form, hinge system 1360 includes proximal hinge driver 1370 which is pivotally coupled to a hinge link 1380. As can be seen more particularly in Figure 4, a displacement fixing pin 1373 is formed at a distal end 1372 of the proximal hinge driver 1370. A pivot hole 1374 is formed on the displacement fixing pin 1373 and is configured to pivotally receive a proximal connecting pin 1382 formed at the proximal end 1381 of the articulation link 1380. A distal end 1383 of the articulation link 1380 includes a pivot 1384 which is configured to pivotally receive a channel pin 1618 formed at the proximal end portion 1610 of the elongated channel 1602. Thus, the movement axial toggle of the proximal articulation actuator 1370 will, therefore, apply articulation movements to the elongated channel 1602 in order to make the surgical end actuator 1500 articulate around the geometric axis of articulation AA in relation to the central column assembly 1250. In various circumstances, the proximal articulation actuator 1370 can be held in position by the articulation lock 1390 when the proximal articulation actuator 1370 is not being moved in the proximal or distal directions. Additional details related to an exemplary form of the 1390 joint lock can be found in the US patent application, entitled SURGICAL INSTRUMENT COMPRISING AN ARTICULATION SYSTEM LOCKABLE TO A FRAME, power of attorney document number END8217USNP / 170102, filed on the same date of this document, the description of which is hereby incorporated by reference in the present invention.
[0064] [0064] In addition to the above, the interchangeable surgical tool set 1000 may include a set of displacer 1100 that can be configured to selectively and releasably couple the proximal articulation driver 1310 to the firing system 1300. According to illustrated in Figure 5, for example, in one form, the displacement assembly 1100 includes a locking ring or locking sleeve 1110, positioned around the portion of the intermediate firing drive shaft 1310 of the firing system 1300, where the locking sleeve 1110 can be rotated between an engaged position in which the locking sleeve 1110 operationally couples the proximal articulation driver 1370 to the trigger member 1300 and a disengaged position, in which the proximal articulation driver 1370 does not is operationally coupled to the trigger member assembly
[0065] [0065] In the illustrated arrangement, the intermediate portion of the firing drive shaft 1310 of the firing member assembly 1300 is formed with two opposing flat sides with a driving notch 1316 formed there. See Figure 5. As can also be seen in Figure 5, locking sleeve 1110 comprises a cylindrical, or at least substantially cylindrical, body that includes a longitudinal opening that is configured to receive the drive shaft intermediate portion. trigger 1310 through it. The locking sleeve 1110 can comprise locking protrusions diametrically opposite and facing inwards, which, when the locking sleeve 1110 is in a position, are received in an engaging manner within corresponding portions of the drive notch 1316 in the intermediate firing drive shaft portion 1310 and, when in another position, are not received within the driving groove 1316 to thus allow relative axial movement between the locking sleeve 1110 and the intermediate firing driving shaft
[0066] [0066] In the illustrated example, the relative movement of the locking sleeve 1110 between its engaged and disengaged positions can be controlled by the displacer assembly 1100 that interfaces with the 1910 proximal closing tube. Still referring to Figure 5 , the displacement assembly 1100 additionally includes a displacement key 1120 which is configured to be received slidingly within a key groove formed on the outer perimeter of the locking sleeve 1110. This arrangement allows the displacement key 1120 move axially in relation to locking sleeve 1110. As discussed in more detail in the US patent application, titled SURGICAL INSTRUMENT WITH AXIALLY MOVABLE CLOSURE MEMBER, power of attorney document number END8209USNP / 170097, filed on the same date as this document, the description of which is incorporated herein by reference in the present invention, a portion of the shifter key 1120 is configured to interact in cam mode with a cam opening (not shown) in the proximal closing tube portion 1910. In addition, in the example shown, shifter 1100 additionally includes a key drum 1130 which is pivotally received in one portion proximal end of the proximal closing tube portion 1910. A portion of the shifter key 1120 extends through a segment of the axial slot in the switching cylinder 1130 and is received movably within an arcuate slot segment in the drum switch 1130. The key drum torsion spring 1132 is mounted on the key drum 1130 and engages a portion of the nozzle assembly 1240 to apply a rotation or torque force that serves to rotate the key drum 1130 to the shifter key 1120 to reach an end portion of the cam opening in the proximal closing tube portion
[0067] [0067] In an arrangement, for example, when the proximal closing tube 1910 is in a non-actuated configuration (anvil 1810 is in an open position spaced in the opposite direction to the cartridge mounted in the elongated channel 1602) the intermediate portion of the firing drive shaft 1310 will result in axial movement of the proximal pivot actuator 1370 to facilitate pivoting of the 1500 end actuator. Once the user has pivoted the surgical end actuator 1500 for a desired orientation , the user can then act the proximal closing tube portion
[0068] [0068] Such rotation of the locking sleeve 1110 will result in the unlocking of the locking protrusions of the drive notch 1316 in the intermediate portion of the trigger drive shaft 1310. When in such a configuration, the trigger drive system 530 can be actuated to actuate the intermediate portion of the firing drive axis 1310 without activating the proximal articulation actuator
[0069] [0069] An exemplary version of the surgical tool set 1000 disclosed here can be used in connection with a standard 1400 surgical (mechanical) clamp cartridge or a 1700 cartridge that is configured to facilitate cutting the tissue with the knife member and seal the cut tissue using radio frequency (RF) energy. Again with reference to Figure 4, a conventional or standard mechanical type 1400 cartridge is shown. Such cartridge arrangements are known and may comprise a cartridge body 1402 that is sized and shaped to be removably received and supported in the channel elongated 1602. For example,
[0070] [0070] Still referring to Figure 4, the anvil 1810, in at least one shape, includes an anvil mounting portion 1820 that has a pair of rotating anvil pins 1822 that project laterally from the same to be received articulated on bases of corresponding rotating pins 1614 formed on the vertical walls 1622 of the proximal end portion 1610 of the elongated channel 1602. The anvil rotating pins 1822 are pivotally retained on their corresponding rotating pin bases 1614 by the cover retainer or channel anvil 1630. The anvil mounting portion 1820 is supported in a movable or pivoting way in the elongated channel 1602 to effect selective pivoting displacement with respect to it around an anvil pivot geometric axis fixed that is transversal to the geometric axis of the drive axis SA.
[0071] [0071] In the illustrated arrangement, the interchangeable surgical tool set 1000 is configured with a triggering member locking system, generally designated as 1640. See Figure 8. As shown in Figure 8, the elongated channel 1602 includes a su - lower surface or lower portion 1620 that has two vertical side walls 1622 that project from it. A centrally arranged longitudinal channel slot 1624 is formed through the lower portion 1620 to facilitate axial displacement of the knife member 1330 therethrough. The channel slot 1624 opens in a longitudinal passage 1626 that accommodates the channel engaging feature or base 1338 in the knife member 1330. The passage 1626 serves to define two protruding inwardly extending portions 1628 that serve to engage the portions corresponding to the 1338 channel or foot hitch feature. The triggering member locking system 1640 includes proximal openings 1642 located on each side of channel slot 1624 that are configured to receive corresponding portions of the feature or hitch base. channel 1338 when knife member 1330 is in an initial position. A knife locking spring 1650 is supported at the proximal end 1610 of the elongated channel 1602 and serves to force the knife member 1330 down. As shown in Figure 8, knife lock spring 1650 includes two spring arms 1652 ending distally that are configured to engage the corresponding center channel engaging features 1337 on knife body 1332. Spring arms 1652 are configured to tilt the 1337 center channel hitch features down. Thus, when in the starting position (not fired), the knife member
[0072] [0072] Still referring to Figure 8, the trigger member locking system 1640 also includes an unlocking assembly 1660 formed or supported at a distal end of the trigger member body 1332. The unlocking assembly 1660 includes a protrusion that extends distally 1662 which is configured to engage an unlock feature 1426 formed in slide set 1420 when slide set 1420 is in its initial position in an untapped surgical staple cartridge 1400. Thus, when a Surgical staple cartridge not fired 1400 is properly installed in the elongated channel 1602, the protrusion 1662 in the unlocking set 1660 comes into contact with the unlocking feature 1426 in the slide set 1420 which serves to tilt the knife member 1330 upwards , so that the central channel hitch 1137 and / or foot 1338 features clean the vertical projections 1654 at the bottom of the channel 1620 to facilitate the axial passage of the knife member 1330 through the elongated channel 1602. If a partially fired cartridge 1400 is inadvertently installed in the elongated channel, the slide assembly 1420 will not be in the starting position and the knife member 1330 will remain in the locked position.
[0073] [0073] The attachment of the interchangeable surgical tool set 1000 to the handle set 500 will now be described with reference to Figures 3 and 9. To start the coupling process, the method
[0074] [0074] During a typical surgical procedure, the doctor can insert the surgical end actuator 1500 into the surgical site through a trocar or other opening in the patient to access the target tissue. In doing so, the physician typically axially aligns the surgical end actuator 1500 along the geometric axis of the drive shaft SA (non-articulated state). Once the surgical end actuator 1500 passes through the trocar port, for example, the physician may need to articulate the end actuator 1500 to position it advantageously adjacent to the target tissue. That is, before closing the anvil 1810 on the target tissue, so that the closing drive system 510 remains unacted. When in this position, the actuation of the triggering system 530 will result in the application of articulation movements to the proximal articulation driver 1370. Once the end actuator 1500 has reached the desired articulated position, the triggering system 530 is deactivated and the hinge lock 1390 can hold the surgical end actuator 1500 in the hinged position. The physician can then actuate the closing drive system 510 to close the anvil 1810 on the target tissue. Such actuation of the closing drive system 510 can also result in the displacer assembly 1100 which detaches the proximal articulation driver 1370 from the intermediate portion of the firing drive shaft
[0075] [0075] As indicated above, the surgical tool set 1000 is configured to be used in conjunction with conventional mechanical surgical clamp / clamp cartridges 1400, as well as with RF 1700 cartridges. In at least one way, the RF 1700 can facilitate the mechanical cutting of the fabric that is trapped between the anvil 1810 and the RF 1700 cartridge with the knife member 1330, while the electrical coagulation current is applied to the fabric in the current path. Alternative arrangements for mechanically cutting and coagulating tissue using electrical current are disclosed, for example, in US Patent Applications No. 5,403,312; 7,780,663 and US Patent Application Serial No. 15 / 142,609, entitled ELECTROSURGICAL INS-
[0076] [0076] As shown in Figures 10 to 12, in at least one arrangement, the RF surgical cartridge 1700 includes a cartridge body 1710 that is sized and shaped to be received and removably supported in the elongated channel 1602. For example, the cartridge body 1710 can be configured to be removably retained by pressure engagement with the elongated channel 1602. In various arrangements, the cartridge body 1710 can be manufactured from a polymeric material, such as, for example, a engineering thermoplastic such as liquid crystal polymer (LCP) liquid crystal polymer Vectra'Y and the elongated channel 1602 can be made from metal. In at least one aspect, the cartridge body 1710 includes an elongated centrally arranged slot 1712 that extends longitudinally through the cartridge body to accommodate the longitudinal displacement of the knife 1330 therethrough. As shown in Figures and 11, a pair of locking engagement tails 1714 extends proximally from the cartridge body 1710. Each locking input tail 1714 has a locking block 1716 formed on the underside of it. sized to be received within a corresponding proximal opening portion 1642 at channel bottom 1620. Thus, when cartridge 1700 is properly installed in elongated channel 1602, locking tails 1714 cover openings 1642 and protrusions 1654 to hold knife 1330 in an unlocked position ready for firing.
[0077] [0077] Now with reference to Figures 10 to 13, in the illustrated example, the cartridge body 1710 is formed by a central electrode block arranged centrally 1720. As can be seen more particularly in Figure 6, the elongated slot 1712 extends through the center of the electrode block 1720 and serves to divide the block 1720 into a left block segment 1720L and a right block segment 1720R. A 1730R right flexible circuit assembly is attached to the 1720R right cushion segment and a 1730L left flexible circuit assembly is attached to the 1720L left cushion segment. In at least one arrangement, for example, the straight flexible circuit 1730R comprises a plurality of 1732R electrical conductors which may include, for example, wider electrical conductors / conductors for RF purposes and thinner electrical conductors for conventional stapling purposes which are supported or fixed or embedded in a 1734R right insulating sheath / member that is fixed to the 1720R right block. In addition, the 1730R right flexible circuit assembly includes a 1736R "first phase" proximal right electrode and a 1738R "second phase" distal right electrode. Likewise, the left flexible circuit assembly 1730L comprises a plurality of 1732L electrical conductors which may include, for example, wider electrical conductors / conductors for RF purposes and thinner electrical conductors for conventional stapling purposes which are supported or fixed or embedded in a 1734L left insulating sheath / member that is fixed to the left 1720L block. In addition, the 1730L left flexible circuit assembly includes a 1736L proximal left "first phase" electrode and a 1738L distal left "second phase" electrode. The 1732L, 1732R left and right electrical conductors are attached to a 1740 distal integrated microcircuit mounted on the distal end portion of the 1710 carbody. In one arrangement, for example, each of the 1730R right and left flexible circuits, 1730L can have an overall "CW" width of approximately 0.025 inch and each of the 1736R, 1736L, 1738R, 1738L electrodes has an "EW" width of approximately 0.010 inch, for example. See Figure 13. However, other widths / sizes are contemplated that can be used in alternative aspects.
[0078] [0078] In at least one arrangement, RF energy is supplied to the surgical tool set 1000 by a conventional RF generator 400 via a supply lead 402. In at least one arrangement, the supply lead 402 includes a set of male plug 406 that is configured to be plugged into corresponding female connectors 410 which are attached to a segmented RF circuit 1160 on an 1152 integrated circuit board. See Figure
[0079] [0079] Again with reference to Figure 10, in at least one illustrated arrangement, the elongated channel 1602 includes a channel circuit 1670 that is supported in a recess 1621 that extends from the proximal end 1610 of the elongated channel 1602 to a location distal 1623 at the lower portion of the elongated channel 1620. Channel circuit 1670 includes a proximal contact portion 1672 that contacts a distal contact portion 1169 of the flexible drive shaft circuit range 1164 for contact electrical with the same. A distal end 1674 of channel circuit 1670 is received within a recess in the corresponding wall 1625 formed in one of the walls of channel 1622 and is folded and attached to a top edge 1627 of the wall of channel 1622. A series of corresponding exposed contacts 1676 are provided at the distal end 1674 of the channel loop 1670, as shown in Figure 10. As can also be seen in Figure 10, an end 1752 of a flexible cartridge circuit 1750 is attached to the distal integrated chip 1740 and is affixed to the distal end portion of the cartridge body 1710. Another end 1754 is folded over the edge of the cartridge platform surface 1711 and includes exposed contacts 1756 configured to make electrical contact with the exposed contacts 1676 of the cir- channel cuff 1670. Thus, when the RF cartridge 1700 is installed in the elongated channel 1602, the electrodes, as well as the distal integrated microcircuit 1740 are fed and communicate with the integrated circuit board 1152 through the contact between the flexible cartridge circuit 1750, the flexible channel circuit 1670, the flexible drive shaft circuit 1164 and slip ring assembly 1150.
[0080] [0080] Figures 16A and 16B are a block diagram of a control circuit 700 of surgical instrument 10 of Figure 1 that occupies two drawing sheets according to one aspect of this description. Referring mainly to Figures 16A and 16B, a handle assembly 702 can include a motor 714, which can be controlled by a motor driver 715 and can be employed by the trigger system of the surgical instrument 10. In various ways, the motor 714 can be a DC brush motor with a maximum speed of approximately 25,000 RPM. In other arrangements, the motor 714 may include a brushless motor, a wireless motor, a synchronous motor, a stepper motor or any other suitable type of electric motor. Motor starter 715 may comprise an H bridge starter comprising field effect transistors (FETs) - 719, for example. The motor 714 can be powered by the supply set 706 releasably mounted to the handle set 500 to supply control energy to the surgical instrument 10. The supply set 706 may comprise a battery which may include several cells battery cells connected in series, which can be used as the power source to energize the surgical instrument 10. In certain circumstances, the battery cells of the 706 power supply set can be replaceable and / or rechargeable. In at least one example, the battery cells can be lithium-ion batteries that can be separably coupled to the power pack
[0081] [0081] The drive shaft assembly 704 may include a drive shaft assembly controller 722 that can communicate with the safety controller and the power management controller 716 through an interface, while the shaft assembly drive 704 and the power supply 706 are coupled to the handle assembly 702. For example, the interface may comprise a first portion of interface 725 which may include one or more electrical connectors for coupling by coupling to the electrical connectors of the corresponding drive shaft assembly and a second interface portion 727 which may include one or more connectors for coupling by coupling with the electrical connectors of the corresponding power assembly to enable electrical communication between the drive shaft assembly controller drive 722 and power management controller 716, at the same time as power set 704 and power supply set 706 are coupled
[0082] [0082] The interface can facilitate the transmission of one or more communication signals between the energy management controller 716 and the drive shaft assembly controller 722 by routing these communication signals through a main controller 717 resident in the assembly handle grip 702, for example. In other cases, the interface can facilitate a direct communication line between the power management controller 716 and the drive shaft assembly controller 722 through the handle assembly 702, while the drive shaft assembly 704 and the supply set 706 are coupled to handle set 702.
[0083] [0083] The main controller 717 can be any single-core or multi-core processor, such as those known under the trade name of ARM Cortex from Texas Instruments. In one respect, the main controller 717 may be a Core Cor- tex-M4F LM4F230H5QR ARM processor, available from Texas Instruments, for example, which comprises an integrated 256 KB single cycle flash memory, or other memory non-volatile, up to 40 MHz, a seek-ahead buffer to optimize performance above 40 MHz, a 32 KB serial random access memory (SRAM), an internal read-only memory ("ROM" - read-only memory) loaded with the StellarisWareO program, electrically erasable programmable readable only memory ("EEPROM" - electrically erasable programmable read-only memory) of 2 KB, one or more modulation modules by pulse width ("PWM" - pulse width modulation), one or more analogs of quadrature encoder inputs ("QEI" - quadrature encoder inputs), one or more analog to digital converters ('ADC "- analog -digital converters) 12 bits with 12 input channels analog, details of which are available in the product data sheet.
[0084] [0084] The safety controller can be a safety controller platform that comprises two families based on controllers, such as TMS570 and RM4x known under the trade name of Hercules ARM Cortex R4, also from Texas Instruments. The safety controller can be configured specifically for critical safety applications IEC 61508 and ISO 26262, among others, to provide advanced integrated safety features while providing scalable performance, connectivity and memory options.
[0085] [0085] The power supply 706 may include a power management circuit which may comprise the power management controller 716, a power modulator 738 and a current sensor circuit 736. The power management circuit may be configured to modulate the battery power output based on the power requirements of the drive shaft assembly 704, while the drive shaft assembly 704 and the power assembly 706 are coupled to the handle assembly 702. The con- power management controller 716 can be programmed to control power modulator 738 from the power output of the power supply 706 and current sensor circuit 736 can be employed to monitor the power output of the power supply 706 to provide feedback to the 716 power management controller about the battery power output so that the 716 power management controller can adjust the power output of the power supply 706 to maintain a desired output. The power management controller 716 and / or the drive shaft assembly controller 722 can each comprise one or more processors and / or memory units that can store multiple software modules.
[0086] [0086] The surgical instrument 10 (Figures 1 to 5) can comprise an output device 742 that can include devices to provide sensory feedback to a user. Such devices may comprise, for example, visual feedback devices (for example, a monitor with LCD screen, LED indicators), hearing feedback devices (for example, a speaker, a bell) or devices tactile feedback (eg haptic actuators). In certain circumstances, the output device 742 may comprise a screen 743 which may be included in the handle assembly 702. The drive shaft assembly controller 722 and / or the power management controller 716 may provide feedback to an user of surgical instrument 10 via output device 742. The interface can be configured to connect the drive shaft assembly controller 722 and / or the power management controller 716 to output device 742. The output device 742 can instead be integrated into the power supply 706. Under these circumstances, communication between output device 742 and the drive shaft assembly controller 722 can be done via the interface, while the drive shaft 704 is coupled to the handle assembly 702.
[0087] [0087] Control circuit 700 comprises circuit segments configured to control the operations of the powered surgical instrument 10. A safety segment controller (Segment 1) comprises a safety controller and main controller segment 717 (Segment 2) . The safety controller and / or the main controller 717 are configured to interact with one or more additional circuit segments, such as an acceleration segment, a display segment, a drive axis segment, a segment of the encoder, a motor segment and a power segment. Each of the circuit segments can be coupled to the safety controller and / or to the main controller 717. The main controller 717 is also coupled to a flash memory. The main controller 717 also comprises a serial communication interface. Main controller 717 comprises a plurality of inputs coupled, for example, to one or more circuit segments, a battery and / or a plurality of switches. The segmented circuit can be implemented by any suitable circuit, such as, for example, a printed circuit board assembly ("PCBA '") inside the energized surgical instrument 10. It must be understood that the term processor for use in the present invention includes any microprocessor, processor, controller, controller or other basic computing device that incorporates the functions of a central processing unit (CPU) in an integrated circuit or at most some integrated circuits. The main controller 717 is a programmable multipurpose device that accepts digital data as input, processes it according to instructions stored in its memory and provides results as output. This is an example of sequential digital logic, as it has internal memory. The control circuit 700 can be configured to implement one or more of the processes described herein.
[0088] [0088] The acceleration segment (Segment 3) comprises an accelerometer. The accelerometer is configured to detect movement or the acceleration of the energized surgical instrument 10. The accelerometer input is used to transition to and from a suspend mode, identify the orientation of the energized surgical instrument and / or identify when the surgical instrument was dropped. In some examples, the acceleration segment is coupled to the safety controller and / or the main controller 717.
[0089] [0089] The screen segment (Segment 4) comprises a screen connector coupled to the main controller 717. The screen connector couples the main controller 717 to a screen through one or more drivers of the integrated circuits of the screen. The drivers of the integrated circuits of the screen can be integrated with the screen and / or they can be located separately from the screen. The screen may comprise any suitable screen, such as an organic light-emitting diode (OLED) screen, a liquid crystal screen (LCD) and / or any other suitable screen. In some examples, the screen segment is coupled to the security processor.
[0090] [0090] The drive shaft segment (segment 5) comprises controls for an interchangeable drive shaft assembly 500 coupled to surgical instrument 10 (Figures 1 to 5) and / or one or more controls for a 1500 end actuator coupled to the interchangeable drive shaft assembly 500. The drive shaft segment comprises a drive shaft connector configured to couple main controller 717 to a drive shaft PCBA. The drive shaft PCBA comprises a low power microcontroller with ferroelectric random access memory ("(FRAM" - ferroelectric random access memory), an articulation switch, a drive shaft release Hall effect switch - ment and a PCBA EEPROM The drive shaft PCBA EEPROM comprises one or more parameters, routines and / or programs specific to the interchangeable drive shaft 500 and / or the drive shaft PCBA. of the drive shaft can be coupled to the interchangeable drive shaft assembly 500 and / or integral with the surgical instrument 10. In some instances, the drive shaft segment comprises a second drive shaft EEPROM. The drive comprises a plurality of algorithms, routines, parameters and / or other data that correspond to one or more sets of drive axes 500 and / or end actuators 1500 that can interface with the ins energized surgical instrument 10.
[0091] [0091] The position encoder segment (Segment 6) comprises one or more rotary magnetic angle position encoders. One or more magnetic encoders of the rotation angle position are configured to identify the rotational position of the motor 714, an interchangeable drive shaft assembly 500 and / or an end actuator 1500 of the surgical instrument 10 (Figures 1 to 5). In some examples, rotary magnetic angle position encoders can be coupled to the safety controller and / or the main controller 717.
[0092] [0092] The motor circuit segment (segment 7) comprises a motor 714 configured to control the movements of the energized surgical instrument 10 (Figures 1 to 5). The motor 714 is coupled to the main microcontroller processor 717 by an H bridge driver comprising one or more H bridge field effect transistors (FETs) and a motor controller. The H bridge actuator is also coupled to the safety controller. A motor current sensor is connected in series to the motor to measure the current drain of the motor. The motor current sensor is in signal communication with the main controller 717 and / or with the safety controller. In some instances, the 714 motor is coupled to an electromagnetic interference (EMI) filter on the motor.
[0093] [0093] The motor controller controls a first motor signal and a second motor signal to indicate the status and position of motor 714 to main controller 717. Main controller 717 provides a high pulse width modulation signal (PWM), a low PWM signal, a direction signal, a synchronization signal and a motor restart signal to the motor controller via a buffer. The supply segment is configured to supply a segment voltage to each of the circuit segments.
[0094] [0094] The power segment (Segment 8) comprises a battery coupled to the safety controller, main controller 717 and additional circuit segments. The battery is coupled to the circuit segmented by a battery connector and a current sensor. The current sensor is configured to measure the total current drain from the segmented circuit. In some examples, one or more voltage converters are configured to provide predetermined voltage values to one or more circuit segments. For example, in some instances, the segmented circuit may comprise 3.3 V voltage converters and / or 5 V voltage converters. A voltage amplification converter is configured to provide a voltage lift. up to a predetermined quantity, such as, for example, up to 13 V. The voltage amplification converter is configured to supply additional voltage and / or current during operations that require a lot of energy and to avoid blackouts or low power conditions.
[0095] [0095] The plurality of keys are coupled to the safety controller
[0096] [0096] Any suitable mechanical, electromechanical or solid state switches can be employed to implement the plurality
[0097] [0097] Figure 17 is another block diagram of a control circuit 700 of the surgical instrument of Figure 1 illustrating interfaces between the handle assembly 702 and the feeding assembly 706 and between the handle assembly 702 and the shaft assembly drive
[0098] [0098] The surgical instrument 10 (Figures 1 to 5) can comprise an output device 742 for sensory feedback to a user. Such devices may comprise visual feedback devices (for example, a monitor with LCD screen, LED indicators), audio feedback devices (for example, a speaker, a bell) or tactile feedback devices (for example, eg haptic actuators). In certain circumstances, the output device 742 may comprise a screen 743 that may be included in the handle assembly 702. The drive shaft assembly controller 722 and / or the power management controller 716 can provide feedback to a user of surgical instrument 10 via output device 742. Interface 727 can be configured to connect the drive shaft assembly controller 722 and / or the power management controller 716 to output device 742. The output 742 can be integrated into power supply 706. Communication between output device 742 and drive shaft assembly controller 722 can be done via interface 725 while interchangeable drive shaft assembly 704 is coupled to the handle assembly 702. Having described a control circuit 700 (Figures 16A and 16B and 6) to control the operation of the surgical instrument 10 (Fig uras 1 to 5), the description now turns to various configurations of the surgical instrument 10 (Figures 1 to 5) and the control circuit 700.
[0099] [0099] Figure 18 is a schematic diagram of a surgical instrument 600 configured to control various functions, according to an aspect of the present description. In one aspect, the surgical instrument 600 is programmed to control the distal translation of a displacement member, such as the beam with a | 614. The surgical instrument
[0100] [0100] Consequently, the components represented schematically in Figure 18 can be readily replaced by the equivalent physical and functional components described in connection with Figures 1 to 17. For example, in one aspect, the control circuit 610 can be implemented as the control circuit 700 shown and described in connection with Figures 16 to 17. In one aspect, sensors 638 can be implemented as a limit switch, electromechanical device, solid state switches, Hall effect devices , magneto-resistive devices (MR) giant magneto-resistive devices (GMR), magnetometers, among others. In other implementations, the 638 sensors can be solid state switches that operate under the influence of light, such as optical sensors, infrared sensors, ultraviolet sensors, among others. In addition, the keys can be solid state devices, such as transistors (for example, FET, junction FET, metal oxide semiconductor FET ("MOSFET" - metal-oxide semiconductor-FET), bipolar and the like).
[0101] [0101] The position, movement, displacement and / or translation of a member of linear displacement, such as the beam with profile in | 614, can be measured by an absolute positioning system, array of sensor and position sensor represented as position sensor 634. As the beam with profile in | 614 is coupled to a longitudinally movable drive member 540, the position of the beam with profile in | 614 can be determined by measuring the position of the longitudinally movable drive member 540 using the position sensor 634. Consequently, in the description below, the position, displacement and / or translation of the beam with profile in | 614 can be obtained by the position sensor 634, as described in the present invention. A control circuit 610, like the control circuit 700 described in Figures 16A and 16B, can be programmed to control the translation of the displacement member, such as the beam with | 614, as described in the present invention. The control circuit 610, in some examples, may comprise one or more microcontrollers, microprocessors or other processors suitable for executing instructions that cause the processor or processors to control the displacement member, for example, the profile beam in | 614, in the manner described. In one aspect, a timer / counter circuit 631 provides an output signal, such as elapsed time or a digital count, to control circuit 610 to correlate the beam position with | 614, as determined by the position sensor 634 with the output of the timer / counter circuit 631 so that the control circuit 610 can determine the position of the beam with profile in | 614 at a specific time (t) in relation to an initial position. The timer / counter circuit 631 can be configured to measure elapsed time, count external events or measure time events.
[0102] [0102] Control circuit 610 can generate a 622 motor setpoint signal. The 622 motor setpoint signal can be supplied to a 608 motor controller. The 608 motor controller can comprise one or more circuits configured to provide a motor 624 drive signal to motor 604 to drive motor 604, as described in the present invention. In some examples, motor 604 may be a brushed direct current (DC) electric motor, such as motor 505 shown in Figure 1. For example, the speed of motor 604 may be proportional to the drive signal of motor 624 In some instances, motor 604 may be a brushless direct current (DC) electric motor and the motor 624 drive signal may comprise a pulse width modulated (PWM) signal supplied to one or more windings of the motor stator. motor 604. In addition, in some examples, the motor controller 608 can be omitted and the control circuit 610 can generate the motor drive signal 624 directly.
[0103] [0103] The 604 motor can receive power from a 612 power supply. The 612 power supply can be or include a battery, a supercapacitor or any other suitable power supply.
[0104] [0104] Control circuit 610 can be in communication with one or more sensors 638. Sensors 638 can be positioned on end actuator 602 and adapted to work with surgical instrument 600 to measure the various derived parameters such as distance the gap in relation to time, the compression of the tissue in relation to time and the deformation of the anvil in relation to time. The 638 sensors may comprise a magnetic sensor, a magnetic field sensor, a strain gauge, a pressure sensor, a force sensor, an inductive sensor such as an eddy current sensor, a resistive sensor, a sensor capacitive, an optical sensor and / or any other sensor suitable for measuring one or more parameters of the end actuator 602. The 638 sensors may include one or more sensors.
[0105] [0105] The one or more 638 sensors may comprise a strain gauge, such as a microdeformation gauge, configured to measure the magnitude of strain on anvil 616 during a stuck condition. The effort meter provides an electrical signal whose amplitude varies with the magnitude of the effort. The 638 sensors can comprise a pressure sensor configured to detect a pressure generated by the presence of compressed tissue between the anvil 616 and the staple cartridge 618. The 638 sensors can be configured to detect the impedance of a section of tissue located between the anvil 616 and the staple cartridge 618 which is indicative of the thickness and / or completeness of the fabric located between them.
[0106] [0106] The 638 sensors can be configured to measure the forces exerted on the 616 anvil by the closing drive system. For example, one or more sensors 638 may be at an interaction point between the closing tube 1910 (Figures 1a4) and the anvil 616 to detect the closing forces applied by the closing tube 1910 to the anvil 616. The forces exerted on the anvil 616 can be representative of the tissue compression experienced by the section of tissue captured between the anvil 616 and the staple cartridge 618. The one or more sensors 638 can be positioned at various points of interaction throughout the closing drive system for detect the closing forces applied to the anvil 616 by the closing drive system. The one or more sensors 638 can be sampled in real time during a gripping operation by a processor as described in Figures 16A to 16B. The control circuit 610 receives sample measurements in real time to provide and analyze information based on time and evaluate, in real time, the closing forces applied to the anvil 616.
[0107] [0107] A current sensor 636 can be used to measure the current drained by the 604 motor. The force required to advance the beam with profile in | 614 corresponds to the current drained by the motor 604. The measured force is converted into a digital signal and supplied to the control circuit 610.
[0108] [0108] The RF 400 power source is coupled to end actuator 602 and is applied to RF cartridge 609 when RF cartridge 609 is loaded on end actuator 602 in place of clamp cartridge 618. Control circuit 610 controls the supply of RF energy to the RF cartridge 609.
[0109] [0109] In general, it is difficult to supply electrosurgical energy to the low impedance fabric continuously until the welding of the fabric is substantially completed. For example, when delivering electrosurgical energy to the low impedance tissue, there is a point where the tissue impedance becomes too low, acting as a short circuit so that the tissue merely draws a lot of current while providing little or no electrosurgical energy. to the fabric. This can result in several undesirable results including, for example, incomplete tissue welding, excessive heating of the electrodes, a delay in surgery, inconvenience or frustration of the doctor, among others.
[0110] [0110] Aspects of the present description can resolve the weakness noted above by controlling control circuits for an Independent power application over segmented sections. In an exemplary aspect, a surgical instrument may include an end actuator that has a first jaw with a distal portion and an adjacent portion, a second jaw that is movable in relation to the first jaw, a first set of electrodes located in the portion distal of the first claw and a second set of electrodes located in the adjacent portion of the first claw. The surgical instrument may also include a control circuit configured to deliver electrosurgical energy (for example, RF energy) to the first set of electrodes and the second set of electrodes. The electrosurgical energy supplied to the first set of electrodes and the second set of electrodes can alternate repeatedly between the first set of electrodes and the second set of electrodes in a predetermined time interval. For example, electrosurgical energy can be supplied to the first set of electrodes over a first period of time (eg 0.25 seconds), to the second set of electrodes over a second period of time (eg , 0.25 seconds) after the first period of time and then for the first set of electrodes for a third period of time (0.25 seconds), and so on. The alternation of electrosurgical energy between the first set of electrodes and the second set of electrodes can be repeated, for example, until the welding of the fabric begins to be completed or is substantially completed. Alternating electrosurgical energy in a very short period of time (for example, 0.25 seconds) between the first set of electrodes and the second set of electrodes can facilitate the complete welding of low-impedance fabric without overheating the electrodes or a delay in surgery. In one example, this alternation of electrosurgical energy can be performed by a microcircuit in the first claw or a processor in the body of the surgical instrument using the RF energy provided from a conventional RF energy generator.
[0111] [0111] Thus, aspects of the present description may allow the surgical instrument to supply electrosurgical energy to the tissue that has low impedance until the welding of the low impedance tissue is substantially completed. In addition, aspects of the present description can advantageously use the microcircuit in the first claw or a processor in the body of the surgical instrument to alternate the electrosurgical energy between the two sets of electrodes using the RF energy of a conventional RF energy generator. .
[0112] [0112] Figure 19 shows a schematic top view of a claw 3000 in an end actuator (for example, end actuator 1500) of a surgical instrument (for example, surgical system 10 or surgical tool set 1000), from according to one aspect of the present description. The claw 3000 may include a cartridge 3010, a flexible circuit 3020 having flexible circuit contacts 3025 (e.g., exposed contacts 1756) and an elongated slot 3030, within which a cutting member (e.g., knife member 1330 ) is received in a sliding way to cut the tissue trapped inside the end actuator along a cut line 3035. The elongated slot can extend from a proximal end of the claw 3000. In an exemplary aspect, the circuit flexible 3020 can also include a microcircuit (for example, distal microcircuit 1740) and then the 3010 cartridge can be called a smart cartridge. The 3000 jaw can also include a first set of 3040L, 3040R electrodes in a first zone 3060 and a second set of electrodes 3050L, 3050R in a second zone
[0113] [0113] In another exemplary aspect, the first zone 3060 and the second zone 3065 can be located in any other suitable locations of the claw 3000. The first and second sets of electrodes 3040L, 3040R, 3050L, 3050R can be in communication with and / or deposited in the flexible circuit 3020. In one example, the elongated slot 3030 can be arranged in the central part of the claw 3000. In another example, the elongated slot 3000 can be arranged in any other suitable locations in the claw 3000. As seen in Figure
[0114] [0114] Electrosurgical energy can 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 200 kilohertz (kKHz) to 1 megahertz (MHz). In application, an electrosurgical device can transmit RF energy at low frequency through the tissue, which causes friction, or ionic agitation, that is, resistive heating, which, therefore, increases the temperature of the tissue. The low operating temperatures of the RF energy are useful for removing, shrinking or sculpting soft tissues while simultaneously cauterizing blood vessels. RF energy works particularly well in connective tissue, which mainly comprises collagen and shrinks when it comes in contact with heat. The first set of electrodes 3040L, 3040R and the second set of electrodes 3050L, 3050R can be electronically connected to the control circuit via flexible circuit 3020. The first set of electrodes 3040L, 3040R and the second set of electrodes 3050L, 3050R can be configured to emit RF energy to form a hemostatic (or coagulation) line in the tissue adjacent to the 3040L, 3040R, 3050L, 3050R electrodes along the 3035 cut line.
[0115] [0115] In an exemplary aspect, the length 3070 of the first set of electrodes 3040L, 3040R can be in the range of about 10 mm to about 100 mm, preferably in the range of about 20 mm to about 50 mm , most preferably in the range of about 25 mm to about 35 mm. Similarly, in an exemplary aspect, the length 3075 of the second set of electrodes 3050L, 3050R can be in the range of about 10 mm to about 100 mm, preferably in the range of about 20 mm to about 50 mm and, more preferably, in the range of about 25 mm to about 35 mm. In another exemplary aspect, the first set of electrodes 3040L, 3040R and the second set of electrodes 3050L, 3050R can have any other suitable length. In an exemplary aspect, a gap between the first set of electrodes 3040L, 3040R and the second set of electrodes 3050L, 3050R can be very small so that the fabric considered can be welded from the first zone 3060 to the second zone 3065 continuously without fabric located between the two zones 3060 and 3065 being unsealed / welded. In an exemplifying aspect, the length 3072 of the gap between the first set of electrodes 3040L, 3040R and the second set of electrodes 3050L, 3050R can be in the range of about 0.1 mm to about 20 mm, from preferably in the range of about 0.5 mm to about 5 mm, more preferably in the range of about 1 mm to about 3 mm. In another exemplary aspect, the length 3072 of the gap between the first set of electrodes 3040L, 3040R and the second set of electrodes 3050L, 3050R can be any other suitable length. The total length 3080 of the first set of electrodes 3040L, 3040R, the second set of electrodes 3050L, 3050R and the span can be in the range of about 20 mm to about 210 mm, preferably in the range of about 60 mm to about 100 mm, more preferably in the range of about 50 mm to about 70 mm.
[0116] [0116] In an exemplary aspect, the first set of electrodes 3040L, 3040R and the second set of electrodes 3050L, 3050R can be electrically coupled to the wider electrical conductors 1168 from which the first set of electrodes 3040L, 3040R and the second set of electrodes 3050L, 3050R can receive electrosurgical energy (for example, RF energy). The first set of electrodes 3040L, 3040R and the second set of electrodes 3050L, 3050R can be electronically coupled to a plurality of electrical conductors (for example, electrical conductors 1732L and 1732R) over the flexible circuit 3020 through which the electrical conductors are connected. - wider 1168 trams can provide RF energy for the 3040L, 3040R, 3050L, 3050R electrodes. In an exemplary aspect, each of the electrodes 3040L, 3040R, 3050L, 3050R can be separately connected to the control circuit (for example, 1740 microcircuit) through a different electrical conductor.
[0117] [0117] For example, a first electrical conductor from the left 1732L electrical conductors can be connected to the 3040L electrode and a second electrical conductor from the 1732L left electrical conductors can be connected to the 3050L electrode. Similarly, a first electrical conductor of the 1732R straight electrical conductors can be connected to the 3040R electrode and a second electrical conductor of the 1732R straight electrical conductors can be connected to the 3050R electrode. In an exemplary aspect, the clamshell 3000 can include a multi-pin to individually control the 3040L, 3040R, 3050L, 3050R electrodes. The multiplexer can be included in the control circuit (for example, microprocessor 560, segmented RF circuit 1160 or distal integrated microcircuit 1740) or located between the control circuit and electrodes 3040L, 3040R, 3050L, 3050R. The multiplexer can distribute the electrosurgical energy to the 3040L, 3040R, 3050L, 3050R electrodes under the control of the control circuit. In an exemplifying aspect, the multiplexer can be configured to detect a short of the electrodes 3040L, 3040R, 3050L, 3050R, for example, caused by a line of metal clamps or another electrically conductive object left in the tissue of a procedure surgical or triggering of previous instrument, and the electrosurgical energy could be modulated appropriately for short circuit. In an exemplary aspect, electrical conductors 1168, 1732L, 1732R can be isolated to protect the components (for example, a 1740 microcircuit, a central column assembly 1250, laminated plates 1322, a flexible circuit 3020) adjacent to the electrical conductors 1168, 1732L, 1732R of inadvertent RF energy. In an exemplary aspect, the 3010 cartridge can be interchangeable. When the cartridge is changed, the narrow and wider electrical conductors 1166, 1168 in the surgical instrument can be connected to the new electrical conductors and electrodes in the new cartridge.
[0118] [0118] In an exemplary aspect, the cutting member (for example, knife member 1330) can be coupled directly or indirectly to a motor (for example, 505 motor). When the control circuit supplies voltage to the motor, the cutting member can be advanced to the first zone 3060 or to the second zone 3065 to cut the fabric in the first and second zones 3060, 3065.
[0119] [0119] Figure 20 shows a 3100 graph representing the voltage applied to the 3040L, 3040R, 3050L 3050R electrodes as a function of time, according to a non-limiting aspect. Pulses 3110 can represent the voltage applied to electrodes 3040L, 3040R in the first zone 3060. Pulses 3120 can represent the voltage applied to electrodes 3050L, 3050R in the second zone 3065. When the voltage is connected to the first zone 3060, the electrosurgical energy can be applied to the tissue adjacent to the first set of 3040L, 3040R electrodes to form a coagulation / welding line there. When the voltage is connected to the second zone 3065, electrosurgical energy can be applied to the tissue adjacent to the second set of electrodes 3050L, 3050R to form a coagulation / welding line there. As shown in Figure 20, in an exemplary aspect, the control circuit can apply an alternatively established voltage to all alternation cycles. Then, the force / energy applied to the tissue may change as the tissue impedance changes. In another exemplary aspect, the control circuit or generator 400 can change the voltage applied to the electrodes (for example, volts during the first 5 cycles, 50 volts for the next 5 cycles, 80 volts for the next 5 cycles). In another exemplary aspect, the control circuit or generator 400 can change the voltage applied to the electrodes to provide constant energy to the tissue. In that case, the voltage may change as the tissue impedance changes.
[0120] [0120] In an exemplifying aspect, electrosurgical energy can alternate repeatedly between the first set of electrodes 3040L, 3040R and the second set of electrodes 3050L, 3050R in a predetermined time interval. For example, electrosurgical energy can be supplied to the first set of 3040L, 3040R electrodes for a first period of time (for example, 0.25 seconds) and then to the second set of 3050L, 3050R electrodes for a second time period (for example, 0.25 seconds). Then, it can be switched back to the first set of electrodes 3040L, 3040R and the alternation of electrosurgical energy between the first set of electrodes 3040L, 3040R and the second set of electrodes 3050L, 3050R can be repeated, for example, until the impedance of the trapped tissue reaches a predetermined impedance value. In an exemplifying aspect, the predetermined time interval can be in the range of about 0.05 seconds to about 0.5 seconds, preferably in the range of about 0.1 seconds to about 0.4 seconds , more preferably, in the range of about 0.2 second to about 0.3 second. In another exemplary aspect, the predetermined time interval can have any other suitable time period. In an exemplifying aspect, the predetermined time interval for alternating electrosurgical energy can be fast enough that the supply of electrosurgical energy to the first set of electrodes 3040L, 3040R and the second set of electrodes 3050L, 3050R appear to be simultaneous.
[0121] [0121] In an exemplary aspect, the alternation of electrosurgical energy can be initiated once the integrated on / off switch 420 is turned on and the alternation can continue without input from a user of the electrosurgical device until the switch on / integrated switch 420 is switched off. The integrated on / off switch 420 can be automatically turned off when the measured fabric impedance reaches a predetermined impedance value (for example, an impedance value indicating that the trapped tissue is completely veiled). The number of cycles (for example, n times) of alternating electrosurgical energy that is required to reach the predetermined impedance value can vary depending on several parameters, including tissue type, tissue thickness, how much moisture is in the tissue. acid, etc.
[0122] [0122] In an exemplary aspect, as shown in Figure 20, the time interval for the first set of electrodes 3040L, 3040R can be the same as the time interval for the second set of electrodes 3050L, 3050R In Another example, the time interval for the first set of electrodes 3040L, 3040R can be different from the time interval for the second set of electrodes 3050L, 3050R. For example, the time interval for the first set of electrodes 3040L, 3040R can be 0.3 seconds, while the time interval for the second set of electrodes 3050L, 3050R can be 0.2 seconds. That is, in this case, electrosurgical energy can be supplied for the first set of electrodes 3040L, 3040R for 0.3 seconds, then for the second set of electrodes 3050L, 3050R for 0.2 seconds, then repeat this alternation. In an exemplary aspect, the predetermined time interval may decrease over time. For example, the predetermined time interval can be 0.3 seconds at the beginning (for example, for a pair of cycles), 0.2 seconds after that (for the next pair of cycles), 0.1 second after that (for the next couple of cycles before the fabric begins to complete the weld or is welded). In another exemplary aspect, the predetermined time interval may increase over time.
[0123] [0123] Figure 21 illustrates a block diagram of a 3200 surgical system programmed to communicate control and energy signals with a 3250 end actuator, according to one aspect of this description. In an exemplary aspect, the 3200 surgical system may include a 3210 control circuit (for example, microprocessor 560, segmented RF circuit 1160 or distal microcircuit 1740) that has an electrosurgical energy control segment (or a control segment power source) 3220 and a 3230 drive shaft control segment (for example, drive shaft segment (Segment 5), motor circuit segment (Segment 7) or power segment (Segment 8)) . The 3210 control circuit can be configured to deliver electrosurgical energy (for example, RF energy) to the electrodes (for example, 3040L, 3040R, 3050L, 3050R electrodes) on the 3250 end actuator (for example, the end actuator 1500). The 3200 surgical system can include one or more 3260 electrical conductors (for example, 1168 electrical conductors) used to supply electrosurgical energy from a 3240 electrosurgical energy generator (for example, the RF generator
[0124] [0124] The 3220 electrosurgical energy control segment can be configured to supply electrosurgical energy to the electrodes via one or more 3260 electrical conductors. In an exemplary aspect, the 3230 drive shaft control segment can be configured to provide and / or receive a control signal to / from the end actuator 3250 (and / or the surgical tool set 1000, the drive shaft set 704) via one or more 3260 electrical conductors. , the one or more 3260 electrical conductors can be used not only to supply electrosurgical energy to the 3250 end actuator, but also to communicate control signals with the 3250 end actuator. In an exemplary aspect, at least some portions of the segment electrosurgical energy control device 3220 and drive shaft control segment 3230 can be electrically isolated from each other.
[0125] [0125] In an exemplary aspect, the 3220 electrosurgical energy control segment can electrically isolate one or more 3260 electrical conductors from the 3230 drive shaft control segment, for example, when supplying electrosurgical energy to the electrodes in the 3250 end actuator through one or more 3260 electrical conductors. In an exemplary aspect, the 3220 electrosurgical energy control segment can control a switch
[0126] [0126] In an exemplary aspect, the 3220 electrosurgical energy control segment can electrically isolate one or more 3260 electrical conductors from the 3230 drive shaft control segment when the 3210 control circuit detects that the electrosurgical energy generator 3240 is connected to the 3265 connector (for example, female connectors 410), for example, by continuously checking the 3265 connector or detecting the application of electrosurgical energy. For example, when the male plug set 406 is plugged into the female connectors 410, the electrosurgical energy control segment 3220 can isolate the electrical conductors 3260 from the drive shaft control segment 3230. In another exemplary aspect, the electrosurgical energy control segment 3220 can electrically isolate the one or more 3260 electrical conductors from the drive shaft control segment 3230 when electrosurgical energy is supplied to the 3250 end actuator or at any other suitable time.
[0127] [0127] In an exemplary aspect, the surgical system may include one or more 3290 electrical conductors (for example, 1166 electrical conductors) used to operate the 3250 end actuator (and / or the surgical tool set 1000, the set drive shaft 704). In an exemplary aspect, one or more 3290 electrical conductors cannot be used to release electrosurgical energy to the 3250 end actuator. The 3230 drive shaft control segment can be programmed to supply and / or receive a control signal to / from the 3250 end actuator via one or more 3290 electrical conductors. In an exemplary aspect, the 3230 drive shaft control segment can use the one or more 3290 electrical conductors to supply and / or receive the control signal to / from the 3250 end actuator while the 3270 switch is in an open state (for example, while the 3220 electrosurgical power control segment is supplying the electrosurgical power to the 3250 end actuator through one or more 3260 electrical conductors). In an exemplary aspect, the drive shaft control segment 3230 can also use one or more 3290 electrical conductors to supply and / or receive the control signal to / from the 3250 end actuator while the 3270 switch is in a closed state .
[0128] [0128] The 3270 switch can be a transistor switch, a mechanical switch, electromechanical switch, relay or any other suitable switch. In an exemplary aspect, the control signals transmitted between the control circuit 3210 and the end actuator 3250 (and / or the surgical tool set 1000, the drive shaft assembly 704) through electrical conductors 3260, 3290 include, but are not limited to, signals to drive the 3250 end actuator (and / or the surgical tool set 1000, the drive shaft set 704) in the cutting and / or coagulation operating modes to measure system electrical characteristics surgical 3200 and / or tissue trapped in the 3250 end actuator, provide feedback for use, transmit sensor signals and identify certain characteristics of the 3250 end actuator (eg used / unused condition).
[0129] [0129] Consequently, aspects of the present description can advantageously reduce the number of electrical conductors required to transmit control signals between the 3210 control circuit and the 3250 end actuator (and / or the surgical tool set 1000, the shaft set drive 704) through the use of some of the electrical conductors (eg 3260 electrical conductors) used for the application of electrosurgical energy to transmit control signals when these electrical conductors are not used for electrosurgical energy. In addition, by isolating these electrical conductors from other segments of the circuit (for example, drive shaft control segment 3230) by supplying electrosurgical energy through these electrical conductors, aspects of this description may prevent electrosurgical energy flows in the other circuit segments and / or electrical conductors (for example, 3290 electrical conductors) connected to those circuit segments, preventing damage to those circuit segments and / or electrical conductors.
[0130] [0130] In an exemplary aspect, the control circuit can include two modes of operation, Mode | and Mode Il. In Mode |, the control circuit can cut the fabric when or after fabric welding is complete. In Mode Il, the control circuit can cut the fabric while fabric welding is in progress. Examples of such modes are described in more detail below and as shown in Figures 22 to 27.
[0131] [0131] Figure 22 is a logical flowchart representing a 4500 process of a control program or a logical configuration for operating the surgical instrument, according to Mode |. Although the 4500 example process is described with reference to the logical flowchart illustrated in Figure 22, it will be recognized that many other methods of performing the actions associated with the method can be used. For example, the order of some of the blocks can be changed, certain blocks can be combined with other blocks and some of the described blocks are optional.
[0132] [0132] In the illustrated example and with reference also to Figure 18, a control circuit 610 (Figure 18), can receive 4510 information about the impedance of the tissue. For example, control circuit 610 may include an impedance feedback circuit and measure the impedance of the tissue trapped in the end actuator 602 (eg the end actuator 1500), such as the tissue adjacent to the first set of electrodes 3040L, 3040R and the second set of electrodes 3050L, 3050R. In an exemplary aspect, the control circuit 610 can measure tissue impedance periodically (for example, every 0.1 second, every 0.5 second or every second). In another exemplary aspect, control circuit 610 can measure tissue impedance at random or in any other suitable way. The 610 control circuit can supply electrosurgical energy 4520 to the first set of electrodes and the second set of electrodes, the supply of electrosurgical energy alternating alternately between the first set of electrodes and the second set of electrodes in one predetermined time interval, For example, the control circuit 610 can supply electrosurgical energy for the first set of electrodes 3040L, 3040R and a second set of electrodes 3050L, 3050R alternatively in a predetermined time interval, as described above in relation to The figure
[0133] [0133] Then, at some points, the control circuit 610 may determine 4530 that the tissue impedance reaches a predetermined impedance value. For example, the predetermined impedance value may be a value that indicates that the tissue adjacent to the first set of electrodes 3040L, 3040R and the second set of electrodes 3050L, 3050R is substantially or completely welded or coagulated. Control circuit 610 can determine that fabric welding is substantially complete by comparing the measured fabric impedance with the predetermined terminating impedance value. Then, the control circuit 610 can stop 4540 the supply of electrosurgical energy to the first set of electrodes and the second set of electrodes. Then, the control circuit 610 can advance 4550 a cutting member, such as the beam with profile | 614, to cut the fabric. In an exemplary aspect, the control circuit 610 can advance the cutting member (for example, beam with profile at | 614) to the first zone 3060 to cut the fabric in the first zone 3060 and then to the second zone 3065 to cut the fabric in the second zone
[0134] [0134] Figure 23 shows a 4600 graph of a 4605 tissue impedance curve as a function of time. The tissue impedance curve 4605 can represent a change in the impedance of the tissue trapped in the end actuator 1500 when the control circuit 610 (Figure 18) is operating in Mode |. As shown in Figure 23, the tissue impedance tends to follow a "bathtub-like" pattern, decreasing at the beginning of the power switch for a first time period 4625 (for example, 0.3 to 1.5 seconds), reaching a minimum impedance value (Zm) at a first time (t1) 4615 and then increase over a second period of time 4630 (for example, 0.3 to 1.5 seconds) as the tissue stapled is being welded. Then, the tissue impedance can reach a point 4610 in a second time (t2) 4620, where the tissue impedance at point 4610 is equal to a predetermined terminating impedance (Z71).
[0135] [0135] In the first time period 4625, the tissue impedance drops from an initial value and decreases, for example, it has a negative angle coefficient, until it reaches the minimum impedance value (Zwm) because after the energy is applied to the fabric over a period of time the moisture content of the fabric evaporates causing the fabric to dry out and causing the impedance of the fabric to rise, for example, positive slope, after that, in the second period of time 4630 until the fabric impedance reaches the predetermined terminating impedance Z7, at which point in time the power to the end actuator can be turned off. In an exemplary aspect, the impedance of the tissue can maintain the minimum impedance rate Zvm for a certain period of time (for example, 0.5 to 5 seconds), where the impedance curve of the 4605 tissue is almost flat for that period of time. If electrosurgical energy (for example, RF energy) is applied continuously instead of being turned off at the 4610 terminating impedance point, the tissue impedance may increase by continuously passing the 4610 point.
[0136] [0136] In an exemplary aspect, the predetermined termination impedance (Z7) can correspond to a point where the fabric adjacent to the 3040L, 3040R, 3050L, 3050R electrodes can be substantially or completely welded in order to cut the fabric (for example blood vessel) without bleeding. The predetermined termination impedance can be stored in a surgical instrument memory device (for example, surgical system 10 or surgical tool set 1000).
[0137] [0137] When the tissue impedance reaches the predetermined termination impedance, the control circuit can interrupt the supply of electrosurgical energy to the first set of electrodes 3040L, 3040R and the second set of electrodes 3050L, 3050R, resulting resulting in a sudden drop in tissue impedance at t2 4620. In an exemplary aspect, this sudden drop in tissue impedance can occur because the control circuit interrupts the measurement of tissue impedance when the electrosurgical energy supply is interrupted. As shown in Figure 24 representing a 4650 graph of an exemplary motor voltage curve, when or after the electrosurgical power supply is interrupted at t2, the control circuit can supply motor 4660 voltage (for example, 505 motor) to cut the fabric in the first zone 3060. Then, the control circuit can also supply voltage to the 4670 motor to cut the fabric in the second zone 3065. As shown in Figures 22 and 23, in Mode |, the cutting of the stuck fabric can begin for a third time period 4635 after the fabric impedance reaches the predetermined termination impedance value (for example, completion of fabric welding).
[0138] [0138] Figure 25 is a logical flowchart representing a 4700 process of a control program or a logical configuration for operating the surgical instrument, according to Mode Il. Although the 4700 example process is described with reference to the logical flowchart illustrated in Figure 24, it will be understood that many other methods of performing the acts associated with the method can be used. For example, the order of some of the blocks can be changed, certain blocks can be combined with other blocks and some of the described blocks are optional.
[0139] [0139] In the illustrated example and with reference also to Figure 18,
[0140] [0140] Then, at some points, the control circuit 610 may determine 4730 that the tissue impedance reaches a predetermined impedance value. For example, the predetermined impedance value can be a value that indicates that the welding of the tissue adjacent to the first set of electrodes 3040L, 3040R and the second set of electrodes 3050L, 3050R begins to complete. Then, the control circuit 610 can advance the cutting member 4740 as the beam with profile | 614 to cut the tissue in the adjacent portion by supplying electrosurgical energy to the first set of electrodes and the second set of electrodes. After cutting the tissue in the adjacent portion of the jaw, the control circuit 610 can advance the cutting member 4740 (eg, beam with profile at | 614) to cut the tissue in the distal portion while supplying electrosurgical energy to the second set of electrodes.
[0141] [0141] In an exemplary aspect, the control circuit 610 can advance the cutting member 4750 (for example, beam with profile in | 614) to cut the tissue in the distal portion while providing electrosurgical energy for both, the first set of electrodes 3040L, 3040R and the second set of electrodes 3050L, 3050R. In another exemplary aspect, the 610 control circuit can interrupt the supply of electrosurgical energy to the first set of electrodes after cutting the tissue in the adjacent portion and provide electrosurgical energy only for the second set of electrodes at the same time. that cuts the tissue in the distal portion. In this case, the supply of electrosurgical energy to the second set of electrodes 3050L, 3050R can still be discontinuous. For example, electrosurgical energy can be supplied to the second set of electrodes 3050L, 3050R for a certain period of time (for example, 0.25 seconds) and then no electrosurgical energy can be supplied to the second set of electrodes 3050L, 3050R during the next defined time period (for example, 0.25 seconds) and then electrosurgical energy can be supplied to the second set of 3050L, 3050R electrodes during the next defined time period (for example (0.25 seconds). This can be repeated by cutting the tissue in the distal portion of the claw (for example, the second zone 3065).
[0142] [0142] In another exemplary aspect, the 610 control circuit can interrupt the supply of electrosurgical energy to the first set of electrodes 3040L, 3040R and the second set of electrodes 3050L, 3050R after cutting the tissue in the first zone . In this case, no electrosurgical energy can be supplied to the tissue
[0143] [0143] Figure 26 shows a 4800 graph of an 4805 tissue impedance curve as a function of time. The tissue impedance curve 4805 can represent a change in the impedance of the tissue trapped in the end actuator 1500 when the control circuit 610 is operating in Mode Il. As seen in Figure 23, the tissue impedance here also tends to follow a common "bath type" pattern, decreasing at the beginning of the power switch (for example, between the first set of electrodes 3040L, 3040R and the second electrode set 3050L, 3050R) for a first time period 4835 (for example, 0.3 to 1.5 seconds), reach a minimum impedance value (Zu) in a first time (t1) 4820 and then increase during a second time period 4840 (for example, 0.3 to 1.5 seconds). As explained above, in the first period of time 4835, the tissue impedance drops from an initial value and decreases, for example, it has a negative slope, until it reaches the minimum impedance value (Zm) because after the energy is applied to the te - Acid for a certain period, the moisture content of the fabric evaporates causing the fabric to dry and causes the impedance of the fabric to start to rise, for example, positive slope, then in the second period of time 4840 until the impedance the fabric reaches the Zr11 terminating impedance. In an exemplifying aspect, the importance of the fabric can maintain the minimum impedance for a
[0144] [0144] In an exemplary aspect, when the fabric impedance reaches the minimum impedance value (Zvm), an impedance change rate (for example, decreases) can become approximately zero, as shown in Figure 23. A welding of the trapped fabric can begin to complete at this point. In an exemplary aspect, in Mode Il, the control circuit can begin to advance the cutting member when the fabric impedance reaches the minimum impedance value (Zwm). For example, the control circuit can determine that the tissue impedance reaches the minimum impedance value (Zm) when the impedance change rate (for example, decreases) becomes approximately zero. In another exemplary aspect, in Mode 1l, the control circuit can begin to advance the cutting member at any other suitable time before the fixed tissue is completely welded. If the tissue impedance maintains the minimum impedance over a period of time (for example, 0.5 to 5 seconds), the control circuit can begin to advance the cutting member at any appropriate time during that time ( for example, at the beginning / middle / end of the flat curve).
[0145] [0145] As shown in Figure 27, and with reference also to Figure 18, control circuit 610 can supply voltage 4860 to motor 604 (for example, motor 505) to cut the fabric in the first zone 3060 when or after impedance of fabric reaches the minimum impedance value (Zwm) before fabric welding is completed. At the termination impedance Zr, it can represent the impedance of the fabric at the end of the cut in a second time (t2) 4825. Then, the control circuit can supply voltage 4870 to the motor 604 (for example, motor 505) to cut the tissue in the second zone 3065 after cutting the tissue in the first zone 3060. The termination impedance Zr2 can represent the impedance of the tissue at the end of the cut in a third time (t3) 4830. The impedance curve 4805 may fall close to the next second time 4825 just after cutting the tissue in the first zone 3060 because the trapped tissue can be wetted with some fluids (for example, blood or any other bodily fluids) that are produced when cutting the tissue in the first zone 3060. shape, although the measured impedance value 4805 may appear to drop after cutting the tissue in the first zone 3060, the impedance of the actual tissue may not drop, but may be similar to or greater than Z7; throughout the third 4845 time period. As the moisture content of the fabric evaporates causing the fabric to dry out due to electrosurgical energy applied to the stuck tissue during the third time 4845, the measured impedance value can also increase rapidly to reflect the real importance of the fabric.
[0146] [0146] In an exemplary aspect, the control circuit 610 can consider the amount of time needed to cut the tissue trapped in the end actuator 602 in determining when to start advancing the cutting member as the beam | 614. For example, if it takes 1 second to cut the fabric in the first zone 3060, the control circuit 610 can start the advancement of the cutting member (for example, beam with profile at | 614) around 1 second before the impedance of the fabric reaches a predetermined value of termination impedance (where, around this time, the welding of the fabric is normally completed) so that the welding of the fabric is substantially completed by the time the cutting of the fabric in the first zone 3060 is completed. In another exemplary aspect, the cutting speed can be adjusted so that the welding of the fabric is substantially completed by the end of the cut. For example, it takes 0.5 seconds from the moment the tissue impedance reaches the minimum impedance to the moment it reaches the termination impedance
[0147] [0147] As explained above, in an exemplary aspect, the 610 control circuit can provide electrosurgical energy for both the first set of 3040L, 3040R electrodes and the second set of 3050L, 3050R electrodes while cutting the tissue in the second zone 3065 during the third time period 4845. In this case, since the trapped tissue received additional electrosurgical energy for the third time period 4845, the Zr12 termination impedance in the third time 4830 may be higher than the impedance of having - Zr1 mining: in the second time 4825, as seen in Figure 26.
[0148] [0148] In an exemplary aspect, the 610 control circuit can interrupt the supply of electrosurgical energy to the first set of electrodes after cutting the tissue in a first zone 3060 and supply the electrosurgical energy only to the second set of electrodes while cutting the fabric in the second zone 3065. In this case, the impedance of termination of the fabric in the second zone 3065 may be greater than the termination impedance of the fabric in the first zone 3060 since the fabric in the second zone 3065 received more energy electrosurgical for the third time period 4845 than the tissue in the first zone 3060, assuming that the predetermined time intervals for the two sets of electrodes are the same.
[0149] [0149] The functions or processes 4500, 4700 described here can be performed by any of the processing circuits described here, such as the control circuit 700 described in relation to Figures 16 and 17, the control circuit 610 described in relation to to Figure 18.
[0150] [0150] The aspects of the surgical instrument can be practiced without the specific details revealed in the present invention. Some aspects were shown as block diagrams instead of details. Parts of this description can be presented in terms of instructions that operate on data stored in a computer's memory. In general, the aspects described here, which can be implemented, individually and / or collectively, through a wide range of hardware, software, firmware or any combination of these, can be seen as being composed of several types of "circuits" electrical ". Consequently, "electrical circuit" includes, but is not limited to, electrical circuits that have at least one separate electrical circuit, electrical circuits that have at least one integrated circuit, electrical circuits that have at least one integrated circuit to apply specific circuits, electrical circuits that form a general-purpose computer device configured by a computer program (for example, a general-purpose computer or processor configured by a computer program that at least partially performs the processes and / or devices described herein), electrical circuits that form a memory device (for example, random access memory forms), and / or electrical circuits that form a communications device (for example, a modem, routers or optical-electrical equipment). These aspects can be implemented in analog or digital form or combinations of them.
[0151] [0151] The previous description presented aspects of devices and / or processes through the use of block diagrams, flowcharts and / or examples, which may contain one or more functions and / or operation. Each function and / or operation within such block diagrams, flowcharts or examples can be implemented, individually and / or collectively, by a wide range of hardware, software, firmware or virtually any combination of them. In one aspect, several portions of the material described here can be implemented by means of application-specific integrated circuits (ASICs), field programmable gate arrangements (FPGAs), digital signal processors (DSP's), programmable logic devices (PLDs) ), circuits, registers and / or software components, for example, programs, subroutines, logic and / or combinations of hardware and software components, logic gates, or other integrated formats. Some aspects disclosed here, in whole or in part, can be implemented in an equivalent way in integrated circuits, such as one or more computer programs executed on one or more computers (for example, as one or more programs executed on one or more computer systems), as one or more programs running on one or more processors (for example, as one or more programs running on one or more microprocessors), as firmware, or virtually as any combination of them , and that designing the circuitry and / or writing the code for the software and firmware would be within the scope of practice of a person skilled in the art in the light of this description.
[0152] [0152] The mechanisms of the subject described here can be distributed as a program product in a variety of ways and that an illustrative aspect of the subject described here is applicable regardless of the specific type of signal transmission medium used to effectively perform the distribution. Examples of a signal transmission medium include the following: a recordable medium such as a floppy disk, a hard disk drive, a compact disc (CD), a digital video disc (DVD), a digital tape, a memory computer, etc .; and a transmission type media, such as digital and / or analog communication media (for example, a fiber optic cable, a waveguide, a communications link with an electrical conductor, a communication link without an electrical conductor (for example, example, transmitter, receiver, transmission logic, reception logic), etc.).
[0153] [0153] The previously mentioned description of these aspects has been presented for purposes of illustration and description. This description is not intended to be exhaustive or to limit the invention to the precise form disclosed. Modifications or variations are possible in light of the above teachings. These aspects were chosen and described for the purpose of illustrating the principles and practical application to, thus, enable the person skilled in the art to use the aspects and with various modifications, as they are convenient to the specific use contemplated. It is intended that the claims presented in the annex define the global scope.
[0154] [0154] Various aspects of the subject described in this document are defined in the following examples:
[0155] [0155] Example 1. A surgical instrument comprising: an end actuator comprising: a first jaw comprising a distal portion and an adjacent portion; a second claw that is movable in relation to the first claw; and at least one electrode in the first claw; a control circuit configured to supply electrosurgical energy to at least one electrode, the control circuit comprising a drive shaft control segment and an electrosurgical energy control segment; and a first electrical conductor electrically connected between the end actuator and the control circuit; the drive shaft control segment being configured to provide the end actuator with a control signal to operate the end actuator through the first electrical conductor; the energy control segment being configured to supply electrosurgical energy to at least one electrode through the first electrical conductor.
[0156] [0156] Example 2. The surgical instrument of example 1, the electrosurgical energy control segment being electrically isolated from the control axis of the drive shaft.
[0157] [0157] Example 3. The surgical instrument of one or more of example 1 and example 2, the electrosurgical energy control segment being configured to perform electrical isolation between the first electrical conductor of the control segment of the drive shaft when supplying electrosurgical energy to at least one electrode.
[0158] [0158] Example 4. The surgical instrument of example 3, additionally comprising an electrically coupled switch between the electrosurgical energy control segment and the drive shaft control segment, the electrosurgical energy control segment it is configured to electrically isolate the first electrical conductor from the drive shaft control segment by means of the switch control.
[0159] [0159] Example 5. The surgical instrument in example 4, the electrosurgical energy control segment being configured to electrically isolate a first electrical conductor from the drive shaft control segment by opening a key located between the first electrical conductor and the drive shaft control segment.
[0160] [0160] Example 6. The surgical instrument from one or more from example 1 to example 5. additionally comprising a second electrical conductor, the drive shaft control segment being configured to provide the control for the end actuator via the second electric conductor and the drive shaft control segment is configured to provide the control signal to the end actuator via the second electric conductor when the electrosurgical power control segment - gica is supplying electrosurgical energy to at least one electrode through the first electrical conductor.
[0161] [0161] Example 7. The surgical instrument of any one or more of Examples 1 to 6, the second claw comprising an anvil.
[0162] [0162] Example 8. The surgical instrument from one of example 1 to example 7, the electrosurgical energy comprising radiofrequency (RF) energy.
[0163] [0163] Example 9. The surgical instrument from one or more of examples 1 to example 8, the at least one electrode comprising a first set of electrodes located in the adjacent portion of the first claw and a second set of electrodes located in the distal portion of the first claw, and the electrosurgical energy segment is configured to repeatedly alternate the electrosurgical energy between the first set of electrodes and the second set of electrodes in a predetermined time interval.
[0164] [0164] Example 10. The surgical instrument of example 9, which additionally comprises a cutting member, the first jaw and the second jaw defining an elongated slit between them, extending from the adjacent portion of the first jaw, and the cutting member can be received slidingly in the elongated slot to cut the fabric located between the first jaw and the second jaw.
[0165] [0165] Example 11. The surgical instrument in example 10, the first set of electrodes comprising a first electrode and a second electrode, the first electrode being located on the left side of the elongated slot and the second electrode being located on the side right of the elongated slit.
[0166] [0166] Example 12. The surgical instrument from one or more of Example 10 to Example 11, the second set of electrodes comprising a third electrode and a fourth electrode, the third electrode being located on the left side of the elongated slot and the fourth electrode is located on the right side of the elongated slot.
[0167] [0167] Example 13. The surgical instrument from one or more from example 9 to example 12, with the predetermined time interval comprising a first time interval for the first set of electrodes and a second time interval for the second set of electrodes, the first time interval being different from the second time interval.
[0168] [0168] Example 14. The surgical instrument from one or more from example 9 to example 12, with the predetermined time interval for the alternation to be fast enough for the supply of electrosurgical energy to the first set of electrodes and the second set of electrodes appears to be simultaneous.
[0169] [0169] Example 15. The surgical instrument from one or more from example 9 to example 14, the predetermined time interval being in the range of about 0.1 to 0.5 seconds.
[0170] [0170] Example 16. A surgical system comprising: a radiofrequency (RF) energy generator; a handle body; a first end actuator comprising: a first gripper comprising a distal portion and an adjacent portion; a second claw that is movable in relation to the first claw; and at least one electrode in the first claw; a control circuit configured to supply RF energy from the power generator to at least one electrode, the control circuit comprising a drive shaft control segment and an RF energy control segment; and a first electrical conductor electrically connected between the end actuator and the control circuit; the drive shaft control segment being configured to provide a control signal to operate the end actuator for the end actuator through the first electrical conductor; the RF energy control segment being configured to supply RF energy to at least one electrode through the first electrical conductor.
[0171] [0171] Example 17. The surgical system of example 16, the RF control segment being electrically isolated from the control axis of the drive shaft.
[0172] [0172] Example 18. The surgical system of one or more of example 16 and example 17, the RF control segment being configured to electrically isolate the first electrical conductor from the control axis of the drive shaft during supply. RF energy to at least one electrode.
[0173] [0173] Example 19. The surgical system of example 18, additionally comprising an electrically coupled switch between the first electrical conductor and the drive shaft control segment, the RF control segment being configured to isolate electrically the first electrical conductor in the control segment of the drive shaft by switch control.
[0174] [0174] Example 20. The surgical instrument in example 19, the electrosurgical energy control segment being configured to make the electrical insulation of a first electrical conductor of the drive shaft control segment by opening a key located between the first electrical conductor and the drive shaft control segment.
[0175] [0175] Example 21. The surgical system from one or more from example 16 to example 20. additionally comprising a second electrical conductor, the drive shaft control segment being configured to provide the control signal to the actuator end through the second electrical conductor and the drive shaft control segment is configured to provide the control signal to the end actuator for the second electrical conductor when the RF control segment supplies the RF energy at least one electrode through the first electrical conductor.
[0176] [0176] Example 22. The surgical system of one or more from example 16 to example 21, the at least one electrode comprising a first set of electrodes located in the adjacent portion of the first claw and a second set of electrodes located in the distal portion of the first claw, and the electrosurgical energy segment is configured to repeatedly alternate RF energy between the first set of electrodes and the second set of electrodes within a predetermined time interval.

权利要求:
Claims (22)
[1]
1. Surgical instrument characterized by comprising: an end actuator comprising: a first claw comprising a distal portion and a proximal portion; a second claw that is movable in relation to the first claw; and at least one electrode in the first claw; a control circuit configured to supply electrosurgical energy to at least one electrode, wherein the control circuit comprises a drive shaft control segment and an electrosurgical energy control segment; and a first electrical conductor electrically connected between the end actuator and the control circuit; wherein the drive shaft control segment is configured to provide the end actuator with a control signal to operate the end actuator through the first electrical conductor; wherein the electrosurgical energy control segment is configured to supply electrosurgical energy to at least one electrode through the first electrical conductor.
[2]
2. Surgical instrument, according to claim 1, characterized in that the electrosurgical energy control segment is electrically isolated from the control axis of the drive shaft.
[3]
3. Surgical instrument, according to claim 1, characterized in that the electrosurgical energy control segment is configured to perform electrical isolation between the first electrical conductor and the drive shaft control segment during the supply of electrosurgical energy to the hair least one electrode.
[4]
4. Surgical instrument, according to claim 3, characterized in that it additionally comprises an electrically coupled switch between the electrosurgical energy control segment and the drive shaft control segment, in which the electrosurgical energy control segment is configured to electrically isolate the first electrical conductor from the drive shaft control segment by means of the switch control.
[5]
5. Surgical instrument, according to claim 4, characterized in that the electrosurgical energy control segment is configured to electrically isolate a first electrical conductor from the control axis of the drive shaft by opening a key located between the first conductor drive and the drive shaft control segment.
[6]
6. Surgical instrument, according to claim 1, characterized in that it additionally comprises a second electrical conductor, in which the control segment of the drive shaft is configured to supply the control signal to the end actuator through the second conductor electrical and where the drive shaft control segment is configured to provide the control signal to the end actuator through the second electrical conductor when the electrosurgical energy control segment is supplying electrosurgical energy to at least one electrode through the first electrical conductor.
[7]
7. Surgical instrument according to claim 1, characterized in that the second claw comprises an anvil.
[8]
8. Surgical instrument, according to claim 1, characterized in that the electrosurgical energy comprises radio frequency (RF) energy.
[9]
9. Surgical instrument according to claim 1, characterized in that the at least one electrode comprises a first set of electrodes located in the proximal portion of the first claw and a second set of electrodes located in the distal portion of the first claw, and in which the electrosurgical energy segment is configured to repeatedly alternate electrosurgical energy between the first set of electrodes and the second set of electrodes at a predetermined time interval.
[10]
10. Surgical instrument according to claim 9, characterized in that it additionally comprises a cutting member, in which the first jaw and the second jaw define an elongated slit between them, extending from the proximal portion of the first jaw, and wherein the cutting member can be slidably received in the elongated slot to cut the fabric between the first jaw and the second jaw.
[11]
11. Surgical instrument, according to claim 10, characterized in that the first set of electrodes comprises a first electrode and a second electrode, in which the first electrode is located on the left side of the elongated slot and the second electrode is located in the right side of the elongated slit.
[12]
12. Surgical instrument, according to claim 10, characterized in that the second set of electrodes comprises a third electrode and a fourth electrode, in which the third electrode is located on the left side of the elongated slot and the fourth electrode is located on the right side of the elongated crack.
[13]
Surgical instrument according to claim 9, characterized in that the predetermined time interval comprises a first time interval for the first set of electrodes and a second time interval for the second set of electrodes, wherein the first interval of time time is different from the second time interval.
[14]
14. Surgical instrument according to claim 9, characterized in that the predetermined time interval for alternating
It must be short enough that the supply of electrosurgical energy to the first set of electrodes and the second set of electrodes appears to be simultaneous.
[15]
Surgical instrument according to claim 9, characterized in that the predetermined time interval is in the range of about 0.1 to 0.5 seconds.
[16]
16. Surgical system characterized by comprising: a radio frequency energy (RF) generator; a handle body; an end actuator comprising: a first gripper comprising a distal portion and a proximal portion; a second claw that is movable in relation to the first claw; and at least one electrode in the first claw; a control circuit configured to supply RF energy from the power generator to at least one electrode, where the control circuit comprises a drive shaft control segment and an RF energy control segment; and a first electrical conductor electrically connected between the end actuator and the control circuit; wherein the drive shaft control segment is configured to provide the end actuator with a control signal to operate the end actuator through the first electrical conductor; wherein the RF energy control segment is configured to supply RF energy to at least one electrode through the first electrical conductor.
[17]
17. Surgical system, according to claim 16, characterized in that the RF control segment is electrically isolated from the control axis of the drive shaft.
[18]
18. Surgical system according to claim 16, characterized in that the RF control segment is configured to electrically isolate the first electrical conductor of the control axis of the drive shaft during the supply of RF energy to the hair least one electrode.
[19]
19. Surgical system, according to claim 18, characterized by additionally comprising an electrically coupled switch between the first electrical conductor and the drive shaft control segment, in which the RF control segment is configured to electrically isolate the first electrical conductor of the drive shaft control segment by means of the switch control.
[20]
20. Surgical instrument, according to claim 19, characterized in that the electrosurgical energy control segment is configured to perform electrical isolation between a first electrical conductor and the control axis of the drive shaft by opening a key located between the first electrical conductor and the drive shaft control segment.
[21]
21. Surgical system according to claim 16, characterized by additionally comprising a second electric conductor, in which the control segment of the drive shaft is configured to provide the control signal to the end actuator through the second electrical conductor and where the drive shaft control segment is configured to provide the control signal to the end actuator through the second electrical conductor when the RF control segment is supplying the RF energy to at least one electrode through the first electrical conductor.
[22]
22. Surgical system according to claim 16, characterized in that the at least one electrode comprises a first set of electrodes located in the proximal portion of the first claw and a second set of electrodes located in the distal portion of the first claw, and in that the electrosurgical energy segment is configured to repeatedly alternate RF energy between the first set of electrodes and the second set of electrodes within a predetermined time interval.

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同族专利:

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公开号 | 公开日

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EP3420994A1|2019-01-02|

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US20210068891A1|2021-03-11|

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JP2020525211A|2020-08-27|

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WO2019003018A1|2019-01-03|

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US20190000534A1|2019-01-03|

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US10888369B2|2021-01-12|

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CN110891509A|2020-03-17|

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法律状态:
2021-11-03| B350| Update of information on the portal [chapter 15.35 patent gazette]|

优先权:

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申请号 | 申请日 | 专利标题

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US15/636,116|2017-06-28|

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US15/636,116|US10888369B2|2017-06-28|2017-06-28|Systems and methods for controlling control circuits for independent energy delivery over segmented sections|

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PCT/IB2018/054326|WO2019003018A1|2017-06-28|2018-06-13|Systems for controlling control circuits for independent energy delivery over segmented sections|

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