Circular Surgical Stapler Anvil Stapler Pocket Settings

专利摘要:
It is an anvil for a circular surgical stapler that includes an anvil surface and an anvil drive shaft. the anvil surface defines an inner annular matrix of clip forming pockets and an outer annular matrix of clip forming pockets. the inner annular matrix of clip forming pockets includes a plurality of pairs of clip forming pockets. the outer annular matrix of clip forming pockets also includes a plurality of pairs of clip forming pockets. the outer annular matrix of clip forming pockets is arranged in specular symmetry with the inner annular matrix of clip forming pockets. The anvil drive shaft is configured to engage a staple head assembly of a surgical stapler.
公开号:BR112019009596A2
申请号:R112019009596
申请日:2017-05-31
公开日:2019-08-13
发明作者:C Miller Christopher；E Shelton Frederick Iv
申请人:Ethicon Llc；
IPC主号:

专利说明:

Descriptive Report of the Invention Patent for CONFIGURATIONS OF POCKET FORMATOR FOR CIRCULAR SURGICAL STAPLER BIGORNA.
BACKGROUND OF THE INVENTION [001] In some surgical procedures (for example, colorectal, bariatric, thoracic, etc.), portions of a patient's digestive tract (for example, the gastrointestinal and / or esophageal tract, etc.) and removed to eliminate unwanted tissue or for other reasons. After the tissue is removed, the remaining portions of the digestive tract can be coupled in an end-to-end anastomosis. End-to-end anastomosis can provide a substantially unobstructed flow path from one portion of the digestive tract to the other portion of the digestive tract, without also providing any type of leak at the anastomosis site.
[002] An example of an instrument that can be used to provide an end-to-end anastomosis is a circular stapler. Some of these staplers work to hold layers of fabric together, cut through the layers of fabric stuck and have the clips go through the fabric layers to substantially seal the fabric layers together near the separate ends of the fabric layers, joining thus, two separate ends of an anatomical lumen together. The circular stapler can be configured to cut the fabric and seal the fabric substantially simultaneously. For example, the circular stapler can separate excess tissue, which is inside an annular matrix of staples in an anastomosis, to provide a substantially smooth transition between the sections of anatomical lumen that are joined in the anastomosis. Circular staplers can be used in open procedures or in
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2/66 endoscopic procedures. In some cases, a portion of the circular stapler is inserted through the hole that occurs naturally in a patient.
[003] Examples of circular staplers are described in US Patent No. 5,205,459, entitled Surgical Anastomoseis Stapling Instrument, issued on April 27, 1993; US Patent No. 5,271,544, entitled Surgical Anastomosis Stapling Instrument, issued December 21, 1993; US Patent No. 5,275,322, entitled Surgical Anastomosis Stapling Instrument, issued January 4, 1994; US Patent No. 5,285,945, entitled Surgical Anastomosis Stapling Instrument, issued February 15, 1994; US Patent No. 5,292,053, entitled Surgical Anastomosis Stapling Instrument, issued March 8, 1994; US Patent No. 5,333,773, entitled Surgical Anastomosis Stapling Instrument, issued August 2, 1994; US Patent No. 5,310,104, entitled Surgical Anastomosis Stapling Instrument, issued September 27, 1994; US Patent No. 5,533,661, entitled Surgical Anastomosis Stapling Instrument, issued July 9, 1996; and in US Patent No. 8,910,847, entitled Low Cost Anvil Assembly for Circular Stapler, published on December 16, 2014. The description of each of the aforementioned US patents is incorporated by reference in the present invention.
[004] Some circular staplers may include a motorized drive mechanism. Examples of circular staplers with motorized drive mechanisms are described in the US patent publication. No. 2015/0083772, entitled Surgical Stapler with Rotary Cam Drive and Return, published on March 26, 2015; US publication No. 2015/0083773, entitled Surgical Stapling Instrument with Drive Assembly Having Toggle Features, published on March 26, 2015; in US publication No. 2015/00 83774, entitled
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3/66 of Control Features for Motorized Surgical Stapling Instrument, published on March 26, 2015; and in US publication No. 2015/0083775, entitled Surgical Stapler with Rotary Cam Drive, published on March 26, 2015. The disclosure of each of the aforementioned US patent publications is incorporated by reference in the present invention.
[005] Although various types of surgical stapling instruments and associated components have been produced and used, it is believed that no one before the inventor (s) has produced or used the invention described in the attached claims.
BRIEF DESCRIPTION OF THE DRAWINGS [006] Although the specification concludes with claims that specifically indicate and distinctly claim this technology, it is believed that this technology will be better understood from the following description of certain examples, taken in conjunction with the accompanying drawings , in which like reference numbers identify like elements, and in which:
[007] Figure 1 represents a perspective view of an exemplary circular stapler;
[008] Figure 2 represents a perspective view of the circular stapler of Figure 1, with a battery removed from a cable assembly and an anvil removed from a stapling head assembly;
[009] Figure 3 represents a perspective view of the anvil of the circular stapler of Figure 1;
[0010] Figure 4 represents a perspective view of the stapling head assembly of the circular stapler of Figure 1;
[0011] Figure 5 represents an exploded perspective view of the stapling head assembly of Figure 4;
[0012] Figure 6 represents an exploded perspective view
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4/66 of the circular stapler of Figure 1, with portions of the drive shaft assembly shown separately from each other;
[0013] Figure 7A represents a cross-sectional side view of the anvil of Figure 3 positioned within a first section of a digestive tract and the stapling head assembly of Figure 4 positioned in a second section of the digestive tract, with the anvil separate from the stapling head assembly;
[0014] Figure 7B represents a cross-sectional side view of the anvil of Figure 3 positioned within the first section of the digestive tract and the stapling head set of Figure 4 positioned in the second section of the digestive tract, with the anvil attached to the set stapling head;
[0015] Figure 7C represents a side view in cross section of the anvil of Figure 3 positioned within the first section of the digestive tract and the stapling head assembly of Figure 4 positioned in the second section of the digestive tract, with the anvil retracted towards to the stapling head assembly to thereby secure the fabric between the anvil and the stapling head assembly;
[0016] Figure 7D represents a cross-sectional side view of the anvil of Figure 3 positioned within the first section of the digestive tract and the stapling head set of Figure 4 positioned in the second section of the digestive tract, with the head set of stapling actuated to cut and staple the attached fabric;
[0017] Figure 7E represents a cross-sectional side view of the first and second sections of the digestive tract of Figure 7A joined in an end-to-end anastomosis;
[0018] Figure 8 represents a bottom plan view of an exemplary alternative anvil that can be used with the gram
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5/66 circular saw of Figure 1;
[0019] Figure 9 represents an enlarged bottom plan view of a portion of the anvil of Figure 8;
[0020] Figure 10 represents an enlarged perspective view of a portion of the anvil of Figure 8;
[0021] Figure 11 represents an enlarged bottom plan view of a portion of an exemplary alternative anvil that can be used with the circular stapler of Figure 1;
[0022] Figure 12 represents a bottom plan view of another exemplary alternative anvil that can be used with the circular stapler of Figure 1;
[0023] Figure 13 represents an enlarged bottom plan view of a portion of the anvil of Figure 12;
[0024] Figure 14 represents an enlarged perspective view of a portion of the anvil of Figure 12;
[0025] Figure 15 represents an enlarged bottom plan view of another exemplary alternative anvil that can be used with the circular stapler of Figure 1;
[0026] Figure 16 represents an enlarged top plan view of a portion of a staple matrix formed using the anvil of Figure 15;
[0027] Figure 17 represents an enlarged perspective view of a portion of a staple array formed using the anvil of Figure 15;
[0028] Figure 18 represents an enlarged bottom plan view of another exemplary alternative anvil that can be used with the circular stapler of Figure 1;
[0029] Figure 19 represents an enlarged top plan view of a portion of a staple array formed using the anvil of Figure 18;
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6/66 [0030] Figure 20 represents an enlarged perspective view of a portion of a staple array formed using the anvil of Figure 18;
[0031] Figure 21 represents a top plan view of a portion of an exemplary alternative stapling head assembly that can be incorporated into the circular stapler of Figure 1; and [0032] Figure 22 represents a bottom plan view of a portion of an exemplary alternative anvil that can be used in conjunction with the staple head assembly of Figure 21. [0033] The drawings are not intended to be limiting in any way and it is envisaged that various modalities of technology can be implemented in a variety of other ways, including those not necessarily represented in the drawings. The drawings incorporated in the annex and forming part of the specification illustrate various aspects of the present technology and, together with the description, serve to explain the principles of the technology; it is understood, however, that this technology is not limited to precisely the provisions shown.
DETAILED DESCRIPTION [0034] The following description of certain examples of the technology should not be used to limit its scope. Other examples, resources, aspects, modalities and advantages of the technology will become evident to those versed in the technique from the following description, which is given by way of illustration, one of the best ways contemplated to execute the technology. As will be understood, the technology described here is capable of other different and obvious aspects, all without disregarding the technology. Consequently, drawings and descriptions should be considered as illustrative and not restrictive in nature.
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I. Overview of the Exemplifying Circular Stapling Surgical Instrument [0035] Figures 1 to 2 represent an exemplary surgical circular stapling instrument 10 that can be used to provide an end-to-end anastomosis between two sections of an anatomical lumen, such as an portion of a patient's digestive tract. The instrument 10 of this example comprises a cable assembly 100, a drive shaft assembly 200, a stapling head assembly 300, an anvil 400 and a removable battery 120. Each of these components will be described in more detail below. In addition to or replacing the aforementioned, it should be understood that instrument 10 can still be constructed and operable in accordance with at least some of the teachings of US patent application No. 14 / 751,612, entitled Method of Applying an Annular Array of Staples to Tissue, deposited on June 26, 2015; US patent No. 5,205,459; US patent No. 5,271. 544; US patent No. 5,275,322; US patent No. 5,285,945; US patent No. 5,292,053; US patent No. 5,333,773; US patent No. 5,350,104; US patent No. 5,533,661; and / or US Patent No. 8,910,847, the disclosures of which are hereby incorporated by reference. Still other suitable configurations will be evident to one skilled in the art in view of the teachings described herein.
A. Exemplary fabric engaging features of the circular stapling instrument [0036] As can be seen best in Figure 3, the anvil 400 of the present example comprises a head 410 and a stem 420. The head 410 includes a proximal surface 412 that defines a plurality of staple forming pockets 414. The staple forming pockets 414 are arranged in two concentric annular arrays in the present example. The staple-forming pockets 414 are
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8/66 configured to deform the staples as the staples are pushed into the staple forming pockets 414 (for example, deforming a staple that has a generic U shape to a B shape, as is known in the art). The stem 420 defines a hole or lumen 422 and includes a pair of pivoting lock members 430 positioned in the hole 422. Each lock member 430 includes features that allow the anvil 400 to be removably attached to a trocar 330 of the head assembly staple 300, as will be described in more detail below. It should be understood, however, that the anvil 400 can be removably attached to a trocar 330 using any other suitable components, resources or techniques.
[0037] The stapling head assembly 300 is located at the distal end of the drive shaft assembly 200. As shown in Figures 1 to 2, the anvil 400 is configured to be removably coupled to the drive shaft assembly 200, adjacent to stapling head assembly 300. As will be described in more detail below, anvil 400 and stapling head assembly 300 are configured to cooperate with tissue manipulation in three ways, including tissue tightening, cutting the fabric and stapling the fabric. As can best be seen in Figures 4 to 5, the stapling head assembly 300 comprises a tubular housing 310 which houses a sliding clip driver member 350. A cylindrical inner core member 312 extends distally within the tubular housing 310. O tubular housing 310 is fixedly attached to an outer sheath 210 of the drive shaft assembly 200, so that tubular housing 310 serves as a mechanical support for the staple head assembly 300.
[0038] The trocar 330 is positioned coaxially within the
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9/66 inner core member 312 of the tubular casing 310. The trocar 330 is operable to move distally and proximally to the tubular casing 310 in response to the rotation of a button 130 located at the proximal end of the cable assembly 100. The trocar 330 comprises a drive shaft 332 and a head 334. Head 334 includes a pointed tip 336 and a proximal surface extending inward 338. Head 334 and the distal portion of the drive shaft 332 are configured for insertion into the hole 422 of the anvil 420. The proximal surface 338 is configured to complement the features of the locking members 430 to provide a pressure fit between the anvil 400 and the trocar 330.
[0039] The clip trigger member 350 is operable to act longitudinally within the tubular housing 310 in response to the activation of the motor 160 as will be described in more detail below. Staple trigger member 350 includes two concentric annular arrays presented distally from staple actuators 352. Staple actuators 352 are arranged to match the arrangement of staple forming pockets 414 described above. Thus, each staple driver 352 is configured to drive a corresponding staple into a corresponding staple forming pocket 414 when the staple head assembly 300 is operated. The clip driver member 350 also defines a bore 354 that is configured to receive coaxially a core member 312 of tubular casing 310.
[0040] A cylindrical knife member 340 is positioned coaxially within the clip trigger member 350. The knife member 340 includes a sharp circular cutting edge, presented distally 342. The knife member 340 is dimensioned in such a way that the member knife 340 defines an outer diameter that is less than the diameter defined by the inner ring matrix of the gram actuators
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10/66 pos 352. The knife member 340 also defines an opening that is configured to receive coaxially a core member 312 of tubular casing 310.
[0041] A platform member 320 is fixedly attached to the tubular casing 310. The platform member 320 includes a separately displayed platform surface 322 that defines two concentric annular arrays of staple openings 324. The staple openings 324 are arranged to correspond to the arrangement of the staple actuators 352 and the staple forming pockets 414 described above. In this way, each staple opening 324 is configured to provide a path for a corresponding staple trigger 352 to drive a corresponding staple through the platform member 320 and into a corresponding staple forming pocket 414 when the staple head assembly 300 is triggered. It should be understood that the arrangement of the staple openings 322 can be modified exactly like the arrangement of the staple forming pockets 414 as described above. It is also to be understood that various structures and techniques can be used to contain the clamps within the staple head assembly 300 before the staple head assembly 300 is driven. The platform member 320 defines an internal diameter that is only slightly larger than the outside diameter defined by the knife member 340. The platform member 320 is thus configured to allow the knife member 340 to move distally to a point where the cutting edge 342 is distal to the platform surface 322.
[0042] Figure 6 shows several components of the drive shaft assembly 200, which extends distally from the cable assembly 100 and couples the components of the stapling head assembly 300 to the components of the cable assembly 100. In particular, and
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11/66 as mentioned above, the drive shaft assembly 200 includes an outer sheath 210 that extends between the cable assembly 100 and the tubular sheath 310. In the present example, the outer sheath 210 is rigid and includes a pre curved section -form 212 that is configured to facilitate the positioning of the stapling head assembly 300 in a patient's colon, as described below. The curved section 212 includes an inner curve 216 and an outer curve 214.
[0043] The drive shaft assembly 200 additionally includes a trocar actuation rod 220 and a trocar actuation band assembly 230. The proximal end of the trocar actuation band assembly 230 is fixedly attached to the proximal end of the shaft trocar 332. The proximal end of the trocar 230 drive band assembly is fixedly attached to the distal end of the trocar trigger rod 220, so that the trocar 330 will move longitudinally in relation to the outer sheath 210 in response to the translation of the trocar actuation band 230 and the trocar actuation rod 220 in relation to the outer sheath 210. The trocar actuation band 230 is configured to flex so that the actuation band assembly of the trocar 230 can follow along the pre-formed curve in the drive shaft assembly 200 according to the drive belt assembly of trocar 230 is longitudinally transferred in relation to the outer sheath 210. However, the set of trigger band 230 has sufficient column strength and tensile strength to transfer the distal and proximal forces of the acting rod of the trocar 220 to the axis trocar 332 drive shaft. The trocar 220 drive shaft is rigid. A clamp 222 is fixedly attached to the trocar drive rod 220 and is configured to cooperate with the characteristics of the
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12/66 complementary casings within the cable assembly 100 to prevent the trocar shaft 220 from rotating within the cable assembly 100 while still allowing the trocar shaft 220 to translate longitudinally within the cable assembly 100. The stem The drive of the trocar 220 also includes a thick helical thread 224 and a thin helical thread 226.
[0044] The drive shaft assembly 200 additionally includes a staple head assembly 240 which is slidably received within the outer sheath 210. The distal end of the staple head assembly 240 is fixedly attached to the proximal end of the staple trigger member 350. The proximal end of the staple head assembly trigger 240 is attached to a drive bracket 250 via a pin 242. It is therefore to be understood that the staple trigger member 350 is longitudinally moved in relation to to the outer sheath 210 in response to translation of the staple head assembly 240 and the drive bracket 250 relative to the outer sheath 210. Staple head assembly 240 is configured to flex so that the staple head assembly 240 can follow along the preformed curve in the drive shaft assembly 200 confor m and the staple head assembly 240 is translated longitudinally in relation to the outer sheath 210. However, the staple head assembly 240 has a column resistance sufficient to transfer distal forces from the drive bracket 250 to the driving member clamp 350.
B · Exemplary user input features of the circular stapling instrument [0045] As shown in Figure 1, cable assembly 100
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13/66 includes a pistol grip 112 and various components that are operable to act on the anvil 400 and the stapling head assembly 300. In particular, the handle assembly 100 includes a button 130, a safety trigger 140, a trigger trigger 150, a motor 160 and a motor drive module 180. Button 130 is coupled to the trigger rod of trocar 220 by means of a nut (not shown), so that the thick helical thread 224 will selectively engage a thread coupling characteristic inside the nut; and in such a way that the fine helical screw 226 will selectively engage a thread engaging feature (not shown) inside the button 130. These complementary structures are configured so that the trocar stem 220 will first translate move proximally at a relatively slow rate, then move proximally at a relatively fast rate in response to the rotation of knob 130.
[0046] It should be understood that when the anvil 400 is coupled to the trocar 330, the rotation of the button 130 will provide the corresponding translation of the anvil in relation to the staple head assembly 300. It should also be understood that the button 130 can be rotated in a first angled direction (for example, clockwise) to retract anvil 400 towards the staple head assembly 300; and in a second angled direction (for example, counterclockwise) to advance the anvil 500 in the opposite direction of the staple head assembly 300. The knob 130 can therefore be used to adjust the gap between the opposing surfaces 412 322 of the anvil 400 and the stapling head assembly 300 until a suitable span d has been obtained.
[0047] In the present example, cable assembly 100 comprises a feedback feature for user 114 that is configured to provide the operator with visual feedback indicating the position of the user.
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14/66 positioning of the anvil 400 in relation to the stapling set 300. The operator can then observe the feedback feature for user 114 while turning the knob 130 to confirm that the proper gap between the anvil 400 and the stapling set 300 has been reached. As an example only, the feedback feature for user 114 can be configured and operable according to at least some of the teachings in US patent application No. 14 / 751,612, entitled Method of Applying an Annular Array of Staples to Tissue, filed on June 26, 2015, the disclosure of which is hereby incorporated by reference. Other suitable ways of providing feedback to the user will be evident to those skilled in the art in view of the teachings in this document.
[0048] The trigger trigger 150 is operable to drive the motor 160 to thereby trigger the staple head assembly 300. The safety trigger 140 is operable to selectively block the trigger trigger 150 based on the longitudinal position of the anvil 400 in relation to the staple head assembly 300. The cable assembly 100 also includes components that are operable to selectively lock both triggers 140, 150 based on the position of the anvil 400 in relation to the staple head assembly 300. When triggers 140, 150 are blocked, trigger trigger 150 is prevented from starting actuation of the staple head assembly 300. In this way, the trigger 150 is operable only to initiate the activation of the staple head assembly 300 when the anvil position 400 in relation to the stapling head assembly 300 is within a predefined range.
[0049] In the present example, the trigger trigger 150 of the present example includes an integral actuating paddle, such as the paddle shown and
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15/66 described in US patent application No. 14 / 751,231, entitled Ultrasonic Surgical Instrument With Staged Clamping, filed on June 26, 2015, the disclosure of which is hereby incorporated by reference. The paddle is configured to activate a motor activation module switch 180 (Figure 1) when the trigger trigger 150 is turned to a triggered position. The motor drive module 180 is in communication with the battery 120 and the motor 160, so that the motor drive module 180 is configured to supply the motor 160 with electrical power from the battery 120 in response to the blade that drives the motor drive module key 180. In this way, the motor 160 will be activated when the trigger trigger 150 is turned. This drive of the motor 160 will act the stapling head assembly 300, as described in more detail below.
[0050] Battery 120 is intended to supply electrical power to a motor 160, as noted above. The battery 120 can be removably attached to the cable assembly 100 via a snap fit or in any other suitable manner. It should be understood that battery 120 and cable assembly 100 may have electrical contacts, pins and complementary sockets and / or other features that provide paths for electrical communication of battery 120 with electrically powered components in cable assembly 100 when battery 120 is attached to the cable assembly 100. It should also be understood that, in some versions, the battery 120 is incorporated unitarily within the cable assembly 100, so that it (the battery 120) cannot be removed from the cable assembly 100.
C · Exemplary anastomosis procedure with circular stapling instrument [0051] Figures 7A to 7E show instrument 10 being used to form an anastomosis 70 between two anatomical structures tu
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16/66 bular 20, 40. Just as an example, the anatomical tubular structures 20, 40 may comprise sections of a patient's esophagus, sections of a patient's colon, other sections of the patient's digestive tract or any other anatomical tubular structures . In some versions, one or more diseased portions of a patient's colon are removed, with the anatomical tubular structures 20, 40 of Figures 7A to 7E representing the remaining separate portions of the colon.
[0052] As shown in Figure 7A, the anvil 400 is positioned on a anatomical tubular structure 20 and the clamping head assembly 300 is positioned on another anatomical tubular structure 40. In versions where the anatomical tubular structures 20, 40 comprise the colon sections of a patient, the stapling head assembly 300 can be inserted through the patient's rectum. It should also be understood that the procedure depicted in Figures 7A to 7E is an open surgical procedure, although the procedure can instead be performed by laparoscopy. Just as an example, such a surgical procedure can be provided in accordance with at least some of the teachings of US publication No. 2016/0100837, entitled Staple Cartridge, published on April 14, 2016, the disclosure of which is incorporated herein by reference ; and / or US patent application No. 14 / 864,310, entitled Apparatus and Method for Reprocessing a Medical Device, filed on September 24, 2015, the disclosure of which is hereby incorporated by reference. The various suitable ways in which the instrument 10 can be used to form an anastomosis 70 in a laparoscopic procedure will be evident to those skilled in the art in view of the teachings presented here.
[0053] As shown in Figure 7A, anvil 400 is in position 870190053251, from 06/11/2019, pg. 10/20
17/66 attached to the anatomical tubular structure 20 so that the nail 420 protrudes from the open cut end 22 of the anatomical tubular structure 20. A pouch suture 30 is provided over a middle region of the nail 420 to generally secure the position of anvil 400 on the anatomical tubular structure 20. Likewise, the stapling head assembly 300 is positioned on the anatomical tubular structure 40 so that the trocar 330 protrudes from the open cut end 42 of the anatomical tubular structure 20. A suture in pouch 50 is provided over a mid-region of drive shaft 332 to generally secure the position of the clamping head assembly 300 to the anatomical tubular structure 40.
[0054] Then, the anvil 400 is attached to the trocar 330 by inserting the trocar 330 into a hole 422, as shown in Figure 7B. Locking members 430 engage the trocar 334 head 330, thereby providing a secure fit between the anvil 400 and the trocar 330. The operator then turns the knob 130 while holding the cable assembly 100 stationary through the pistol grip 112. This rotation of knob 130 causes trocar 330 and anvil 400 to retract proximally, as described above. As shown in Figure 7C, this proximal retraction of the trocar 330 and the anvil 400 compresses the tissue of the anatomical tubular structures 20, 40 between the surfaces 412, 322 of the anvil 400 and the staple head assembly 300. The operator observes the feedback to user 114 to determine whether the gap distance d between the opposing surfaces 412, 322 of the anvil 400 and the stapling head assembly 300 is adequate; and make any necessary adjustments using button 130.
[0055] Once the operator has properly adjusted the gap distance d using button 130, the operator pulls the safety trigger 140 to allow the trigger to be triggered
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150. The operator then activates the trigger trigger 150. This actuation of the trigger trigger 150 in turn activates a motor activation module switch 180, which in turn activates motor 160 to actuate the stapling head assembly 300 by driving knife member 340 and staple trigger member 350 distally as shown in Figure 7D. As knife member 340 travels distally, cutting edge 342 of knife member 340 cooperates with inner edge 416 of anvil 400, thus shearing excess tissue that is positioned within annular recess 418 of anvil 400 and inside knife member 340.
[0056] As shown in Figure 4, the anvil 400 of the present example includes a breakable washer 417 within the annular cavity 418. This washer 417 is broken by knife member 340 when knife member 340 completes a full range of distal movement from the position shown in Figure 7C to the position shown in Figure 7D. The drive mechanism for knife member 340 can provide an increased mechanical advantage when knife member 340 reaches the end of its distal movement, thus providing greater force through which the washer breaks 417. Of course, the 417 break-away washer can be omitted entirely in some versions. In versions where washer 417 is included, it should be understood that washer 417 can also serve as a cutting edge for knife member 340 to assist in cutting the fabric. Such a cutting technique can be used in addition to, or in place of, the aforementioned shearing action between the inner edge 416 and the cut edge 342.
[0057] As the staple trigger member 350 moves distally from the position shown in Figure 7C to the position shown in Figure 7D, the staple trigger member 350
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19/66 activates the clamps 90, through the fabric of anatomical tubular structures 20, 40 and into the staple forming pockets 414 of the anvil 400. The staple forming pockets 414 deform the driven clamps 90 in the form of B, as is known in the technique. The clips formed 90 in this way hold the ends of the tissue together, thus coupling the anatomical tubular structure 20 with the anatomical tubular structure 40.
[0058] After the operator activates the staple head assembly 300, as shown in Figure 7D, the operator turns the knob 130 to actuate the anvil 400 distally away from the staple head assembly 300, increasing the gap distance d to facilitate the release of tissue between surfaces 412, 322. The operator then removes the instrument 10 from the patient, with the anvil 400 still attached to the trocar 330. Referring again to the example in which the tubular anatomical structures 20, 40 comprise sections of a patient's colon, the instrument 10 can be removed through the patient's rectum. With the instrument 10 removed, the anatomical tubular structures 20, 40 are left attached together by two annular arrays of clamps 90 to an anastomosis 70, as shown in Figure 7E. The internal diameter of anastomosis 70 is defined by the cut edge 60 left by knife member 340.
IL Exemplary anvils example [0059] In some cases, it may be desirable to change the configuration and arrangement of staple-forming pockets 414 on anvil 400. It should be understood that reconfiguration and re-arrangement of staple-forming pockets 414 may result in reconfiguration and repositioning of the staples 90 that are formed by the staple forming pockets 414. For example, the configuration and arrangement of the staple forming pockets 414 can affect the structural integrity
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20/66 of an anastomosis 70 that is fixed by staples 90. In addition, the configuration and arrangement of the staple forming pockets 414 can affect the hemostasis that is obtained in an anastomosis 70 that is fixed by staples 90. The description a The following refers to several exemplary variations of the anvil 400, providing staple-forming pocket configurations and arrangements that differ from those of the staple-forming pockets 414.
[0060] It should be understood that the various alternatives to anvil 400 described below can be readily used with the instrument 10 in place of anvil 400. It must also be understood that, in some cases, the configuration and arrangement of the staple openings 324 on the platform member 320 may need to be varied to complement the configuration and arrangement of the alternative staple forming pockets described below. Various suitable ways in which the alternatives to anvil 400 described below can be incorporated into instrument 10 will become apparent to those skilled in the art in view of the teachings of the present invention.
A. Exemplary anvil with symmetrical matrices of staple-forming pockets having staple leg deflection wall with curve configuration [0061] Figures 8-10 show an exemplary alternative anvil 500 that can be used with a modified version of the instrument 10. The anvil 500 in this example is configured and operable just like the anvil 400, except for the differences described below. The anvil 500 of the present example comprises a proximal surface 506 that defines an internal annular matrix 502 of the staple forming pockets 510, 530 and an external annular matrix 504 of the staple forming pockets 550, 570. A chamfered edge 508 extends around the external perimeter of the proximal surface 506.
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It should be understood that the anvil 500 can be attached to the trocar 330, that the proximal surface 506 can be used to compress the tissue against the platform surface 322 and that the clip driver 352 can drive the clips 90 through the tissue into the staple forming pockets 510, 530, 550, 570 and to thereby form staples 90 in the fabric.
[0062] As best seen in Figures 9-10, each staple forming pocket 510 comprises a staple entry surface 512 and a staple exit surface 514. The surfaces 512, 514 are contiguous with each other and define a recess concave. The concave recess formed by the surfaces 512, 514 is further defined by an inner wall 516, a first outer wall 518, a second outer wall 520 and a third outer wall 522. In the present example, the walls 516, 518, 520, 522 are , each substantially flat. Wall 518 defines a relatively narrow tapered gap with wall 516. Wall 522 defines a relatively wide gap with wall 516. Wall 520 is obliquely angled, providing an inward transition from wall 522 to wall 518. Thus , walls 518, 520, 522 together provide a curve configuration. The edge connecting wall 516 with the wall 522 is substantially straight in this example. Similarly, the edge connecting wall 516 to wall 518 is substantially straight in this example.
[0063] It should be understood that, when a first leg of the clip 90 is directed into the pocket forming the clips 510, the first leg first meets the input surface of the clip 512, generally folds towards the second leg of the clip 90 along a foreground that is orthogonal to the geometric axis of the first unformed leg and then folds proximally backwards generally towards the crown of the clamp 90. In addition
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22/66 In addition, the first leg will finally encounter wall 520, which will provide a flesh surface that folds the first leg along a second plane that is orthogonal to the geometric axis of the first unformed leg. In particular, wall 520 and then wall 518 will deflect the first leg radially inward towards the central geometric axis of the anvil 500. Thus, the staple forming pocket 510 will ultimately deflect a first leg of a staple 90 proximally and radially inward. Wall 516 will restrict the degree that the first leg of clip 90 deflects radially inward.
[0064] Each staple forming pocket 530 comprises a staple entry surface 532 and a staple exit surface 534. The surfaces 532, 534 are contiguous with each other and define a concave recess. The concave recess formed by the surfaces 532, 534 is further defined by an outer wall 536, a first inner wall 538, a second inner wall 540 and a third inner wall 542. In the present example, walls 536, 538, 540, 542 are , each substantially flat. Wall 538 defines a relatively narrow tapered gap with wall 536. Wall 542 defines a relatively wide gap with wall 536. Wall 540 is obliquely angled, providing an inclined outward transition from wall 542 to wall 538. Thus , walls 538, 540, 542 together provide a curve configuration. The edge connecting wall 536 to wall 542 is substantially straight in this example. Similarly, the edge connecting wall 536 to wall 538 is substantially straight in this example.
[0065] It should be understood that when a second leg of the clamp 90 is directed into the pocket forming the clamps 530, the second leg first meets the inlet surface of the clamp 532, usually folds towards the first leg of the clamp 90 along a foreground that is orthogonal to the ge axis
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23/66 ometrium of the second unformed leg and then bends proximally backwards generally towards the crown of the clamp 90. In addition, the second leg will finally find the wall 540, which will provide a meat surface that bends the second leg along a second plane that is orthogonal to the geometric axis of the second unformed leg. In particular, wall 540 and then wall 538 will deflect the second leg radially outwardly in the opposite direction to the central geometric axis of the anvil 500. Thus, the staple-forming pocket 530 will ultimately deflect a second leg of a staple 90 proximally and radially outward. Wall 536 will restrict the degree to which the second leg of clip 90 deflects radially outward.
[0066] Each staple forming pocket 550 comprises a staple entry surface 552 and a staple exit surface 554. The surfaces 552, 554 are contiguous with each other and define a concave recess. The concave recess formed by the surfaces 552, 554 is further defined by an outer wall 556, a first inner wall 558, a second inner wall 560 and a third inner wall 562. In the present example, walls 556, 558, 560, 562 are , each substantially flat. Wall 558 defines a relatively narrow tapered gap with wall 556. Wall 562 defines a relatively wide gap with wall 556. Wall 560 is obliquely angled, providing an inclined outward transition from wall 562 to wall 558. Thus , walls 558, 560, 562 together provide a curve configuration. Edge connection wall 556 to wall 562 is substantially straight in this example. Similarly, the edge connecting wall 556 to wall 558 is substantially straight in this example.
[0067] It should be understood that when a second leg of the clip 90 is directed into the pocket forming the clips 550, the second leg first encounters the entrance surface
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24/66 of clamp 552, usually bends towards the first leg of clamp 90 along a foreground that is orthogonal to the geometric axis of the second unformed leg, and then folds proximally backward generally towards the crown of the clamp 90. In addition, the second leg will finally find the wall 560, which will provide a flesh surface that folds the second leg along a second plane that is orthogonal to the geometric axis of the second unformed leg. In particular, wall 560 and then wall 558 will deflect the second leg radially outwardly in the opposite direction to the central geometric axis of the anvil 500. Thus, the clamp-forming pocket 550 will ultimately deflect a second leg of a clamp 90 proximally and radially outward. Wall 556 will restrict the degree to which the second leg of clip 90 deflects radially outward.
[0068] Each staple forming pocket 570 comprises a staple entry surface 572 and a staple exit surface 574. The surfaces 572, 574 are contiguous with each other and define a concave recess. The concave recess formed by the surfaces 572, 574 is further defined by an inner wall 576, a first outer wall 578, a second outer wall 580 and a third outer wall 582. In the present example, walls 576, 578, 580, 582 are , each substantially flat. Wall 578 defines a relatively narrow tapered gap with wall 576. Wall 582 defines a relatively wide gap with wall 576. Wall 580 is obliquely angled, providing an inward transition from wall 582 to wall 578. Thus , walls 578, 580, 582 together provide a curve configuration. Edge connection wall 576 to wall 582 is substantially straight in this example. Similarly, the edge connecting wall 576 to wall 578 is substantially straight in this example.
[0069] It should be understood that when a first leg of the
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25/66 staple 90 is directed into the staple forming pocket 570, the first leg first meets the staple entry surface 572, usually folds towards the second staple leg 90 along a foreground that is orthogonal to the geometric axis of the first unformed leg and then bends proximally backwards generally towards the crown of the clamp 90. In addition, the first leg will finally find the wall 580, which will provide a flesh surface that bends the first leg to the along a second plane that is orthogonal to the geometric axis of the first unformed leg. In particular, wall 580 and then wall 578 will deflect the first leg radially inward towards the central geometric axis of the anvil 500. Thus, the staple-forming pocket 570 will ultimately deflect a first leg of a staple 90 proximally and radially inward. Wall 576 will restrict the degree to which the first leg of clip 90 deflects radially inward.
[0070] As best seen in Figure 8, the staple forming pockets 510, 530, 550, 570 are arranged so that a line of radius R1, extending outward from the center of the anvil 500, passes through the region of the entry surface 512 of the staple-forming pocket 510 and across the region of the input surface 552 of the staple-forming pocket 550. Thus, the staple-forming pockets 510, 550 overlap over a radial dimension. In addition, another line of radius R1, extending outwardly from the center of the anvil 500, passes through the region of the entry surface 532 of the staple-forming pocket 530 and through the region of the entrance surface 572 of the forming pocket of staples 570. Thus, the staple forming pockets 530, 570 overlap over a radial dimension. In addition, another line of radius R1, extending outwardly from the center of the anvil 500, passes through the region of the outlet surface 574 of the staple former pocket 570 and
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26/66 through the region of the outlet surface 554 of the staple forming pocket 550. Thus, the staple forming pockets 550, 570 overlap along a radial dimension. It should also be understood that the staple forming pockets 550, 570 in each pair of pockets 550, 570 are interlocked in this configuration. In addition, another line of radius R1, extending outwardly from the center of the anvil 500, passes through the region of the outlet surface 514 of the staple former pocket 510 and through the region of the outlet surface 534 of the former pocket of staples 530. Thus, the staple forming pockets 510, 530 overlap over a radial dimension. It should also be understood that the staple forming pockets 510, 530 in each pair of pockets 510, 530 are interlocked in this configuration.
[0071] In the present example, the inner matrix 502 and the outer matrix 504 are configured similarly, so that the innermost pocket 510 in each pair of inner pockets 510, 530 is on the left side in the view of Figure 9 of the pocket pair 510, 530; and so that the innermost pocket 570 in each outer pocket pair 550, 570 is on the left side in the view of Figure 9 of pocket pair 550, 570.
[0072] Also in the present example, the end of wall 536 associated with the staple entry surface 532 includes a folded region 537, which bends slightly inward towards the central region of anvil 500. It should be understood that this folded region 537 it can be formed to maintain a minimum distance between the wall 536 and the wall 576, thus maintaining a minimum distance between the staple-forming pocket 530 and the staple-forming pocket 570, which can also allow for more reliable production of the anvil 600. In addition, the folded region 537 can provide a different behavior from the second leg of the clamp 90 which is formed by the clamp-forming pocket 530. This behavior differs
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27/66 can refer to deflections in the anvil 500 and / or an inclination that can result in the fact that the first and second legs of a given clamp 90 come into contact with the corresponding surfaces 512, 532 at different times during the stapling head assembly 300.
[0073] It should also be understood that the presence of the folded region 537 provides a staple-forming pocket 530 with a structural configuration that makes the staple-forming pocket 530 unique in relation to the other staple-forming pockets 510, 550, 570. In In contrast, the structural configuration of the staple former pocket 510 is identical to the structural configuration of the staple former pocket 570; whereas the structural configuration of the staple-forming pocket 550 is the specular reverse of the structural configuration of the staple-forming pockets 510, 570.
[0074] In the present example, the spacing between pockets 510, 530 in each pair of pockets 510, 530 is equal to the spacing between pockets 550, 570 in each pair of pockets 550, 570. In some other versions, however, spacing between pockets 510, 530 in each pair of pockets 510, 530 is less than the spacing between pockets 550, 570 in each pair of pockets 550, 570. In these versions, pockets 550, 570 can be used to form staples 90 having a crown width greater than the crown width of the clamps 90 which are formed using pockets 510, 530. Like other merely illustrative variations, the spacing between pockets 510, 530 in each pair of pockets 510, 530 can be greater than the spacing between pockets 550, 570 in each pair of pockets 550, 570. In these versions, pockets 550, 570 can be used to form clamps 90 having a crown width less than the crown width of clamps 90 which are formed using pockets 510, 530.
[0075] As also seen in Figure 9, the pockets forming
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28/66 clamps 510, 530 are arranged so that they are not completely centered along a circumferential line C1 extending along the surface 506 in a constant radius from the center of the anvil 500. The outermost regions of the surfaces of clip entry 512, 532 are radially centered along the same circumferential line Cl. However, the staple-forming pocket 510 is oriented substantially at an angle to the circumferential line C1, so that the staple outlet surface 514 is positioned substantially radially into the circumferential line C1. In contrast, the clip exit surface 534 is positioned substantially along, with a portion position slightly radially outward, from the circumferential line C1. In other words, although the clamp-forming pocket 530 is substantially aligned along the circumferential line C1, the clamp-forming pocket 510 is substantially angled radially inward to the circumferential line C1, where the outermost regions of the entry surfaces of clip 512, 532 are radially centered along a circumferential line C1.
[0076] Although the views illustrated in Figures 9-10 show only a portion of the entire circumference of the anvil 500, it should be understood that the structures shown in Figures 9-10 extend across the entire circumference of the anvil 500. The views of Figures 9-10 are provided simply as an enlargement to show the structure in more detail and are not intended to suggest that the structures shown are located only in a limited angular range along the circumference of the anvil 500.
B · Exemplary anvil with symmetrical matrices of staple-forming pockets with staple leg deflection wall with curve and corner configuration with double chamfered and repPetition entry 870190053251, from 06/11/2019, pg. 10/323
29/66 dondada [0077] Figure 11 shows another alternative example anvil 600 that can be used with a modified version of instrument 10. The anvil 600 in this example is configured and operable exactly like the anvil 400, except for the differences described below . The anvil 600 of the present example comprises a proximal surface 606 that defines an internal annular matrix 602 of the staple forming pockets 610, 630 and an external annular matrix 604 of the staple forming pockets 650, 670. A chamfered edge 608 extends around the external perimeter of the proximal surface 606. It should be understood that the anvil 600 can be attached to the trocar 330, that the proximal surface 606 can be used to compress the tissue against the platform surface 322 and that the staple driver 352 can drive the staples 90 through the fabric into the staple forming pockets 610, 630, 650, 670 and to thereby form staples 90 in the fabric.
[0078] In the example shown in Figure 11, each staple forming pocket 610 comprises a staple entry surface 612 and a staple exit surface 614. The surfaces 612, 614 are contiguous with each other and define a concave recess. The concave recess formed by the surfaces 612, 614 is further defined by an inner wall 616, a first outer wall 618, a second outer wall 620 and a third outer wall 622. In the present example, the walls 616, 618, 620, 622 are , each substantially flat. Wall 618 defines a relatively narrow tapered gap with wall 616. Wall 622 defines a relatively wide gap with wall 616. Wall 620 is obliquely angled, providing an inward sloping transition from wall 622 to wall 618. Thus , walls 618, 620, 622 together provide a curve configuration. The connection wall 616 of
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30/66 edge 624 with wall 622 is substantially round in this example. Similarly, the connecting wall 616 of the edge 626 to the wall 618 is substantially round in this example. Thus, the staple-forming pocket 610 differs from the staple-forming pocket 510 in that the edges 624, 626 of the staple-forming pocket 610 are round; whereas the same edges in the staple-forming pocket 510 are substantially straight.
[0079] It should be understood that, when a first leg of the staple 90 is directed into the pocket forming the staples 610, the first leg first meets the entry surface of the staple 612, generally folds towards the second leg of the staple 90 along a foreground that is orthogonal to the geometric axis of the first unformed leg and then folds proximally backwards generally towards the crown of the clamp 90. In addition, the first leg will finally find the wall 620, which will provide a flesh surface that folds the first leg along a second plane that is orthogonal to the geometric axis of the first unformed leg. In particular, wall 620 and then wall 618 will deflect the first leg radially inward towards the central geometric axis of anvil 600. Thus, the staple forming pocket 610 will ultimately deflect a first leg of a staple 90 proximally and radially inward. The wall 616 will restrict the degree that the first leg of the clip 90 deflects radially inward.
[0080] Each staple forming pocket 630 comprises a staple entry surface 632 and a staple exit surface 634. The surfaces 632, 634 are contiguous with each other and define a concave recess. The concave recess formed by the surfaces 632, 634 is further defined by an outer wall 636, a first inner wall 638, a second inner wall 640 and a third inner wall 642. In the present example, the walls
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636, 638, 640, 642 are each substantially flat. Wall 638 defines a relatively narrow tapered gap with wall 636. Wall 642 defines a relatively wide gap with wall 636. Wall 640 is obliquely angled, providing an inclined outward transition from wall 642 to wall 638. Thus , walls 638, 640, 642 together provide a curve configuration.
[0081] It should be understood that when a second leg of staple 90 is directed into the pocket forming staple 630, the second leg first meets the entry surface of staple 632, usually folds towards the first leg of staple 90 along a foreground that is orthogonal to the geometric axis of the second unformed leg and then folds proximally backwards generally towards the crown of the clamp 90. In addition, the second leg will finally find the wall 640, which will provide a surface of flesh that folds the second leg along a second plane that is orthogonal to the geometric axis of the second unformed leg. In particular, the wall 640 and then the wall 638 will deflect the second leg radially outwardly in the direction opposite to the central geometric axis of the anvil 600. Thus, the staple-forming pocket 630 will ultimately deflect a second leg of a staple 90 proximally and radially outward. Wall 636 will restrict the degree to which the second leg of clip 90 deflects radially outward.
[0082] Each staple forming pocket 650 comprises a staple entry surface 652 and a staple exit surface 654. The surfaces 652, 654 are contiguous with each other and define a concave recess. The concave recess formed by surfaces 652, 654 is further defined by an outer wall 656, a first inner wall 658, a second inner wall 660 and a third inner wall 662. In the present example, walls 656, 658, 660, 662 are , each substantially flat. The wall
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658 defines a relatively narrow tapered span with wall 656. Wall 662 defines a relatively wide span with wall 656. Wall 660 is obliquely angled, providing an inclined outward transition from wall 662 to wall 658. Thus, walls 658, 660, 662 together provide a curve configuration. Edge connecting wall 656 to wall 662 is substantially straight in this example. Similarly, the edge connecting wall 656 to wall 658 is substantially straight in this example.
[0083] It should be understood that, when a second leg of the clip 90 is directed into the pocket forming the clips 650, the second leg first meets the entry surface of the clip 652, generally folds towards the first leg of the clip 90 along a foreground that is orthogonal to the geometric axis of the second unformed leg and then folds proximally backwards generally towards the crown of the clamp 90. In addition, the second leg will finally find the wall 660, which will provide a surface of flesh that folds the second leg along a second plane that is orthogonal to the geometric axis of the second unformed leg. In particular, wall 660 and then wall 658 will deflect the second leg radially outwardly in the opposite direction to the central geometric axis of anvil 600. Thus, the clamp-forming pocket 650 will ultimately deflect a second leg of a clamp 90 proximally and radially outward. Wall 656 will restrict the degree to which the second leg of clip 90 deflects radially outward.
[0084] Each staple forming pocket 670 comprises a staple entry surface 672 and a staple exit surface 674. The surfaces 672, 674 are contiguous with each other and define a concave recess. The concave recess formed by the surfaces 672, 674 is further defined by an inner wall 676, a first outer wall 678, a second outer wall 680 and
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33/66 a third outer wall 682. In the present example, the walls 676, 678, 680, 682 are each substantially flat. Wall 678 defines a relatively narrow tapered gap with wall 676. Wall 682 defines a relatively wide gap with wall 676. Wall 680 is obliquely angled, providing an inward transition from wall 682 to wall 678. Thus , walls 678, 680, 682 together provide a curve configuration. The edge connecting wall 676 to wall 682 is substantially straight in this example. Similarly, the edge connecting wall 676 to wall 678 is substantially straight in this example.
[0085] It should be understood that when a first leg of staple 90 is directed into the pocket forming staple 670, the first leg first meets the entry surface of staple 672, usually folds towards the second leg of staple 90 along a foreground that is orthogonal to the geometric axis of the first unformed leg and then folds proximally backwards generally towards the crown of the clamp 90. In addition, the first leg will finally find wall 680, which will provide a flesh surface that folds the first leg along a second plane that is orthogonal to the geometric axis of the first unformed leg. In particular, wall 680 and then wall 678 will deflect the first leg radially inward toward the central geometric axis of anvil 600. Thus, the staple-forming pocket 670 will ultimately deflect a first leg of a staple 90 proximally and radially inward. Wall 676 will restrict the degree to which the first leg of clip 90 deflects radially inward.
[0086] Although Figure 11 shows only a portion of the anvil 600, it should be understood that the staple-forming pockets 610, 630, 650, 670 can extend around the entire circumference of the proximal surface 606, in an arrangement similar to of pockets
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34/66 staple former 510, 530, 550, 570, as shown in Figure 8. Thus, staple former pockets 610, 630, 650, 670 can have the same type of overlap along a radial dimension, as described above in the context of the staple forming pockets 510, 530, 550, 570. In other words, although the view shown in Figure 11 shows only a portion of the entire circumference of the anvil 600, it should be understood that the structures shown in Figure 11 are extend along the entire circumference of anvil 600. The view in Figure 11 is simply being provided as an enlargement to show the structure in more detail and is not intended to suggest that the structures shown are located only within a limited angular range along the circumference of the anvil 600.
[0087] It should also be understood that on the anvil 600, the inner matrix 602 and the outer matrix 604 are configured similarly, so that the inner pocket 610 in each pair of inner pockets 610, 630 is on the left side in the Figure view 11 from pocket pair 610, 630; and so that the innermost pocket 670 in each pair of outer pockets 650, 670 is on the left side (in the view of Figure 11) of pocket pair 650, 670.
[0088] In the present example, the staple-forming pocket 630 is exclusive compared to the other staple-forming pockets 610, 650, 670 of the anvil 600 in that the staple-forming pocket 630 additionally includes a double chamfered edge at the right end (in the view of Figure 11) of wall 636. In particular, this double chamfered edge is formed by a first edge 648 extending obliquely from wall 636 and a second edge 646 extending obliquely from first edge 648. The second edge 646 is joined to the wall 642 by means of a substantially flat edge 644. It should be understood that this double border
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35/66 of the chamfer formed by the edges 646, 648 can have a purpose similar to that described above in the context of the folded region 537 of the staple forming pocket 530. In particular, the configuration of the edges 646, 648 can be formed to maintain a minimum distance between wall 636 and wall 676, thus maintaining a minimum distance between the staple-forming pocket 630 and the staple-forming pocket 670, which can also allow for more reliable production of the anvil 600. In addition, the configuration of the edges 646, 648 can provide different behavior of the second leg of the clamp 90 which is formed by the clamp-forming pocket 630. This different behavior can refer to deflections in the anvil 600 and / or an inclination that can result in the fact that the first and the second legs of a given clamp 90 come into contact with the corresponding surfaces 612, 632 at different times during the activation of the staple head assembly nto 300.
[0089] As also seen in Figure 11, the staple forming pockets 610, 630 are arranged so that they are not completely centered along a circumferential line Cl that extends along the surface 606 in a constant radius from the center of the anvil 600. The outermost regions of the staple entry surfaces 612, 632 are radially centered along the same circumferential line Cl. However, the staple-forming pocket 610 is oriented substantially at an angle to the circumferential line C1, so that the staple outlet surface 614 is positioned substantially radially into the circumferential line C1. In contrast, the clip exit surface 634 is positioned substantially along, with a portion position slightly radially outward, from the circumferential line C1. In other words, although the staple-forming pocket 630 is substantially aligned along the circumferential line
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Cl, the clip-forming pocket 510 is substantially angled radially inward with respect to the circumferential line C1, in which the outermost regions of the staple entry surfaces 612, 632 are radially centered along a circumferential line C1.
C · Exemplary anvil with inverted matrices of staple-forming pockets and overlapping formed leg configuration with lateral leg deflection [0090] Figures 12-14 show an alternative exemplar anvil 700 that can be used with a modified version of instrument 10. A anvil 700 in this example is configured and operable just like anvil 400, except for the differences described below. The anvil 700 of the present example comprises a proximal surface 706 that defines an internal annular matrix 702 of the staple forming pockets 710, 730 and an external annular matrix 704 of the staple forming pockets 750, 770. A chamfered edge 708 extends around the external perimeter of the proximal surface 706. It should be understood that the anvil 700 can be attached to the trocar 330, that the proximal surface 706 can be used to compress the tissue against the platform surface 322 and that the staple driver 352 can drive the staples 90 through the fabric into the staple forming pockets 710, 730, 750, 770 and to thereby form staples 90 in the fabric.
[0091] As can best be seen in Figures 13-14, each staple forming pocket 710 comprises a staple entry surface 712 and a staple exit surface 714. The surfaces 712, 714 are contiguous with each other and define a recess concave. The concave recess formed by the surfaces 712, 714 is further defined by an inner wall 716 and an outer wall 718. In the present example, the walls 716, 718 are each
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37/66 one, substantially flat. Walls 716, 718 together define a taper, so that the gap between walls 716, 718 is smaller near the outlet surface 714 than the gap between walls 716, 718 on the inlet surface 712.
[0092] It should be understood that when a first leg of staple 90 is directed into the pocket forming staple 710, the first leg first encounters the entry surface of staple 712, usually folds towards the second leg of staple 90 along a foreground that is orthogonal to the geometric axis of the first unformed leg and then folds proximally backwards generally towards the crown of the clamp 90. In addition, the first leg will finally find the wall 716, which will provide a flesh surface that folds the first leg along a second plane that is orthogonal to the geometric axis of the first unformed leg. In particular, the wall 716 will deflect the first leg radially outwardly in the direction opposite to the central geometric axis of the anvil 700. Thus, the staple forming pocket 710 will ultimately deflect a first leg of a clamp 90 proximally and radially outward. Wall 718 will restrict the degree that the first leg of clip 90 deflects radially outwardly.
[0093] Each staple forming pocket 730 comprises a staple entry surface 732 and a staple exit surface 734. The surfaces 732, 734 are contiguous with each other and define a concave recess. The concave recess formed by the surfaces 732, 734 is further defined by an inner wall 738 and an outer wall 736. In the present example, the walls 736, 738 are each substantially flat. The walls 736, 738 together define a taper, so that the gap between the walls 736, 738 is smaller near the outlet surface 734 than the gap between the walls 736, 738 on the inlet surface 732.
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38/66 [0094] It should be understood that when a second leg of the clamp 90 is directed into the pocket forming the clamps 730, the second leg first meets the inlet surface of the clamp 732, it usually bends towards the first leg of the clamp 90 along a foreground that is orthogonal to the geometric axis of the second unformed leg and then folds proximally backwards generally towards the crown of the clamp 90. In addition, the second leg will finally find the wall 736 , which will provide a flesh surface that folds the second leg along a second plane that is orthogonal to the geometric axis of the second unformed leg. In particular, wall 736 will deflect the second leg radially inward towards the central geometric axis of the anvil 700. Thus, the clamp-forming pocket 730 will ultimately deflect a second leg of a clamp 90 proximally and radially inward. Wall 738 will restrict the degree that the second leg of clip 90 deflects radially inward.
[0095] Each staple forming pocket 750 comprises a staple entry surface 752 and a staple exit surface 754. The surfaces 752, 754 are contiguous with each other and define a concave recess. The concave recess formed by the surfaces 752, 754 is further defined by an inner wall 758 and an outer wall 756. In the present example, the walls 756, 758 are each substantially flat. Walls 756, 758 together define a taper, so that the gap between walls 756, 758 is smaller near the outlet surface 754 than the gap between walls 756, 758 on the inlet surface 752.
[0096] It should be understood that when a second leg of staple 90 is directed into the pocket that forms staples 750, the second leg first encounters the entry surface of staple 752, usually folds towards the first leg of the staple.
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39/66 clamp 90 along a foreground that is orthogonal to the geometric axis of the second unformed leg and then folds proximally backwards generally towards the crown of the clamp 90. In addition, the second leg will finally find the wall 758, which will provide a flesh surface that folds the second leg along a second plane that is orthogonal to the geometric axis of the second unformed leg. In particular, wall 758 will deflect the second leg radially outwardly in the direction opposite to the central geometric axis of the anvil 700. Thus, the staple forming pocket 750 will ultimately deflect a second leg of a clamp 90 proximally and radially outward. Wall 756 will restrict the degree to which the second leg of clip 90 deflects radially outwardly.
[0097] Each staple forming pocket 770 comprises a staple entry surface 772 and a staple exit surface 774. The surfaces 772, 774 are contiguous with each other and define a concave recess. The concave recess formed by the surfaces 772, 774 is further defined by an inner wall 776 and an outer wall 778. In the present example, the walls 776, 778 are each substantially flat. The walls 776, 778 together define a taper, so that the gap between the walls 776, 778 is smaller near the outlet surface 774 than the gap between the walls 776, 778 on the inlet surface 772.
[0098] It should be understood that when a first leg of staple 90 is directed into the pocket forming staple 770, the first leg first meets the entry surface of staple 772, generally folds towards the second leg of staple 90 along a foreground that is orthogonal to the geometric axis of the first unformed leg and then folds proximally backwards generally towards the crown of the clamp 90. In addition, the first leg will finally find the wall 778, which will provide
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40/66 a flesh surface that folds the first leg along a second plane that is orthogonal to the geometric axis of the first unformed leg. In particular, the wall 778 will deflect the first leg radially inward towards the central geometric axis of the anvil 700. Thus, the staple forming pocket 770 will ultimately deflect a first leg of a staple 90 proximally and radially inward. Wall 776 will restrict the degree to which the first leg of clip 90 deflects radially inward.
[0099] As best seen in Figure 12, the staple forming pockets 710, 730, 750, 770 are arranged so that a line of radius R1, extending outward from the center of the anvil 700, passes through the region of the outlet surface 774 of the staple-forming pocket 770 and through the region of the outlet surface 754 of the staple-forming pocket 750. Thus, the staple-forming pockets 750, 770 overlap over a radial dimension. It should also be understood that the staple forming pockets 750, 770 in each pair of pockets 750, 770 are interlocked in this configuration. In addition, another line of radius R1, extending outwardly from the center of the anvil 700, passes through the region of the outlet surface 714 of the staple former pocket 710 and through the region of the outlet surface 734 of the former pocket of staples 730. Thus, the staple forming pockets 710, 730 overlap over a radial dimension. It should also be understood that the staple forming pockets 710, 730 in each pair of pockets 710, 730 are interlocked in this configuration. In addition, another line of radius R1, extending outwardly from the center of the anvil 700, passes through the region of the inlet surface 732 of the staple former pocket 730 and through the region of the inlet surface 772 of the former pocket of staples 770. Thus, the staple-forming pockets 730, 770 overlap over a dimension
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41/66 are radial. In addition, another line of radius R1, extending outwardly from the center of the anvil 700, passes through the region of the entry surface 712 of the staple-forming pocket 710 and through the region of the entrance surface 752 of the forming pocket of staples 750. Thus, the staple forming pockets 710, 750 overlap over a radial dimension.
[00100] In the present example, the inner matrix 702 and the outer matrix 704 are arranged to provide mirror symmetry, so that the outermost pocket 710 in each pair of inner pockets 710, 730 is on the left side (in the view of Figures 13 -14) of pocket pair 710, 730 and so that the innermost pocket 770 in each pair of outer pockets 750, 770 is on the left side (in the view of Figures ΙΟΙ 4) of pocket pair 750, 770. Thus, the symmetry between matrices 702, 704 is opposite to the symmetry between matrices 502, 504 described above.
[00101] As also seen in Figure 13, the staple forming pockets 710, 730 are arranged so that they are substantially centered along a circumferential line C1 which extends along the surface 706 in a constant radius from the center of the anvil 700. The outermost regions of the staple entry surfaces 712, 732 are radially centered along the same circumferential line Cl. In addition, the circumferential line C1 intersects the wall 716 at a point along the length of the wall 716 which is at the same point along the length of the wall 736 at which the circumferential line C1 intersects the wall 736. Thus, as a pair, the staple forming pockets 710, 730 are radially centered along the circumferential line Cl.
[00102] Although the views illustrated in Figures 13-14 show only a portion of the entire circumference of the anvil 700, it should be understood that the structures shown in Figures 13-14 are
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42/66 tend along the entire circumference of the anvil 700. The views in Figures 13-14 are provided simply as an enlargement to show the structure in more detail and are not intended to suggest that the structures shown are located only in a range limited angle along the circumference of the anvil 700.
D. Example anvil with internal matrix of displaced pockets θ external matrix of aligned pockets [00103] Figure 15 shows another alternative example anvil 800 that can be used with a modified version of instrument 10. The anvil 800 of this example is configured and operable exactly like the anvil 400, except for the differences described below. The anvil 800 of the present example comprises a proximal surface 806 that defines an internal annular matrix 802 of the staple-forming pockets 810, 830 and an external annular matrix 804 of the staple-forming pockets 850, 870. In some versions, a beveled edge (no shown) extends around the outer perimeter of the proximal surface 806. It should be understood that the anvil 800 can be attached to the trocar 330, that the proximal surface 806 can be used to compress the tissue against the platform surface 322 and that the trigger staple 352 can drive the staples 880, 890 through the fabric into the staple forming pockets 810, 830, 850, 870 and thereby form the staples 880, 890 in the fabric.
[00104] In the present example, the structural configuration of the staple-forming pocket 810 is identical to the structural configuration of the staple-forming pocket 710, the structural configuration of the staple-forming pocket 830 is identical to the structural configuration of the staple-forming pocket 730, the structural configuration of the staple former pocket 850 is identical to the structural configuration of the staple former pocket 750 and the structural configuration of the staple former pocket
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43/66 pos 870 is identical to the structural configuration of the staple forming pocket 770. Thus, the structural configurations of 810, 830, 850, 870 will not be discussed in more detail here. In addition, the positioning and arrangement of the staple forming pockets 810, 830 are identical to the positioning and arrangement of the staple forming pockets 710, 730. Thus, the relationship between the staple forming pockets 810, 830 and the circumferential line Cl is equal to the aforementioned relationship between forming pockets 710, 730 and a corresponding circumferential line Cl.
[00105] Unlike staple forming pockets 750, 770, staple forming pockets 850, 870 are arranged so that they do not overlap. Instead, the staple forming pockets 850, 870 are aligned with each other so that a circumferential line C is centered along the staple entry and staple exit surfaces of the staple forming pockets 750, 770.
[00106] As shown in Figure 15, the staple forming pockets 810, 830, 850, 870 are arranged so that the line of radius R1, extending outward from the center of the anvil 800, passes through a pocket staple former 830 and an adjacent staple former pocket 870; so that another line of radius R1, extending outwardly from the center of the anvil 800, passes through a staple forming pocket 810 and an adjacent staple forming pocket 850; and so that another line of radius R1, extending outward from the center of anvil 800, passes through both staple forming pockets 810, 830 in each pair of staple forming pockets 810, 830. However, no line of radius R1, extending outwardly from the center of anvil 800, passes through both staple forming pockets 850, 870 in each pair of staple forming pockets 850, 870.
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44/66
Instead, a given line of radius R1, extending outwardly from the center of anvil 800, will pass through only one of the staple forming pockets 850, 870 in each pair of staple forming pockets 850, 870; or it will not pass through any of the staple forming pockets 850, 870. In fact, Figure 15 shows a line of radius R1 extending outward from the center of the anvil 800 passing between the forming pockets 850, 870.
[00107] Although the view shown in Figure 15 shows only a portion of the entire circumference of anvil 800, it should be understood that the structures shown in Figure 15 extend along the entire circumference of anvil 800. The view in Figure 15 is it is simply provided as an enlargement to show the structure in more detail and is not intended to suggest that the structures shown are located only in a limited angular range along the circumference of the anvil 800.
[00108] Figures 16-17 show two arrays of staples 880, 890 that were formed using the anvil 800. In particular, Figures 16-17 show an internal matrix of staples 880 formed by the staple forming pockets 810, 830 and one outer matrix of staples 890 formed by staple forming pockets 850, 870. As shown, each outer staple 890 includes a crown 892 and an associated pair of folded legs 894, 896. Since the staple entry and exit regions of the pockets staple formers 850, 870 are centered along a circumferential line C1, crowns 892 and folded legs 894, 896 are also centered along a circumferential line C1. Therefore, it should be understood that the clamps formed 890 are substantially two-dimensional - they extend along a circumferential dimension (that is, along the circumferential line Cl) and extend along a longitudinal dimension (that is, inward and outward). out
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45/66 of the page in the view of Figure 16). This two-dimensional configuration of formed 890 clamps creates an appearance similar to the letter B.
[00109] In contrast, each inner clamp 880 includes folded legs 884, 886 which are deflected out of the plane from the corresponding crown 882. In particular, although crowns 882 are substantially centered along circumferential line Cl, each folded leg 884 is deflected radially inward with respect to the circumferential line C1, while each bent leg 886 is deflected radially outwardly with respect to the circumferential line C1. This configuration occurs due to the displacement ratio between the staple forming pockets 810, 830 and the corresponding circumferential line Cl. It should be understood that the staples formed by the staple forming pockets 510, 530, 550, 570, 610, 630, 650, 670, 710, 730, 750, 770 described above can also have a configuration that is similar to the formed staples 880 It should also be understood that the clamps formed 880 are substantially three-dimensional - they extend along a circumferential dimension (that is, along the circumferential line Cl), they extend along a longitudinal dimension (that is, inward and outward). out of the page in the view in Figure 16) and extend across a radial dimension.
E · Exemplary anvil with inverted matrices of staple-forming pockets and non-overlapping formed leg configuration with lateral leg deflection [00110] Figure 18 shows another alternative exemplary anvil 900 that can be used with a modified version of the instrument 10. A anvil 900 in this example is configured and operable just like anvil 400, except for the differences described below. The anvil 800 of the present example comprises a proximal surface 906 that defines an internal ring matrix 902 of the pockets
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46/66 staple former 910, 930 and an external ring matrix 904 of the staple forming pockets 950, 970. In some versions, a beveled edge (not shown) extends around the outer perimeter of the proximal surface 906. It should be understood that the anvil 900 can be attached to the trocar 330, that the proximal surface 906 can be used to compress the fabric against the platform surface 322 and that the clip driver 352 can drive the clips 980, 990 through the fabric into the pockets staple makers 910, 930, 950, 970 and to thereby form staples 980, 990 on the fabric.
[00111] In the present example, all staple forming pockets 910, 930, 950, 970 are configured identically to each other. In particular, each staple-forming pocket 910, 930, 950, 970 is generally rectangular in shape on the proximal surface 906, so that the staple-forming pockets 910, 930, 950, 970 are not tapered along the proximal surface 906. However, the side walls of the staple forming pockets 910, 930, 950, 970 tilt towards each other as the side walls approach the bases of the staple forming pockets 910, 930, 950, 970. The bases of the staples staple forming pockets 910, 930, 950, 970 are concave, so that a staple leg 984, 986, 994, 996 will first find a corresponding staple entry point 912, 932, 952, 972, then it will generally fold towards the other leg of clamp 980, 990 along a foreground that is orthogonal to the geometric axis of the first unformed leg and then bends proximally backwards generally towards crown 982, 992 of clamp 980, 990.
[00112] As also seen in Figure 18, each pair of staple-forming pockets 910, 930 is centered along a corresponding circumferential line Cl, and each pair of staple-forming pockets
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47/66 clamps 950, 970 is also centered along a corresponding circumferential line Cl. In particular, an internal circumferential line C1 passes through each clip entry point 912, 932; whereas an outer circumferential line C1 passes through each staple entry point 952, 972. Although the staple forming pockets 910, 930, 950, 970, as pairs, are centered along the corresponding circumferential lines C1, each pocket staple former 910, 930, 950, 970 is oriented obliquely to the corresponding circumferential line Cl. In addition, each staple forming pocket 910 is angularly displaced with respect to the other staple forming pocket 930 in the pocket pair 910, 930; and each staple forming pocket 950 is angularly offset with respect to the other staple forming pocket 970 in the pocket pair 950, 970.
[00113] It should be understood from what was previously mentioned that, in addition to bending the legs 984, 986, 994, 996 back towards the corresponding crowns 982, 992 along the respective first planes that are orthogonal to the respective axes of the respective first unformed legs 984, 986, 994, 996, the staple forming pockets 910, 930, 950, 970 will fold the legs 984, 986, 994, 996 along the respective second planes that are orthogonal to the respective axes of the respective first unformed legs 984, 986, 994, 996. In particular, the staple forming pocket 910 will fold leg 984 radially outwardly in the direction opposite to the central geometric axis of anvil 900; the staple-forming pocket 930 will fold leg 986 radially inward toward the central geometric axis of anvil 900; the staple-forming pocket 950 will fold leg 994 radially outwardly in the opposite direction to the central geometric axis of anvil 900; and the staple-forming pocket 970 will fold leg 996 radially inward toward
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48/66 to the central geometric axis of the anvil 900.
[00114] In the present example, the inner matrix 902 and the outer matrix 904 are arranged to provide specular symmetry, so that pocket 910 in each pair of inner pockets 910, 930 that provides the outermost formed leg 984 is at the bottom ( in the view of Figure 18) of pocket pair 910, 930; and so that pocket 970 in each pair of outer pockets 950, 970 that provides the innermost formed leg 996 is at the bottom (in the view in Figure 18) of pocket pair 950, 970. In contrast, pocket 930 in each inner pocket pair 910, 930 providing the innermost formed leg 986 is at the top (in the view of Figure 18) of pocket pair 910, 930; and pocket 950 in each pair of outer pockets 950, 970 that provides the outermost formed leg 994 is at the top (in the view of Figure 18) of pocket pair 950, 970. Thus, the symmetry between the matrices 902, 904 is opposite to the symmetry between matrices 502, 504 described above. Instead, the symmetry between matrices 902, 904 is similar to the symmetry between matrices 702, 704.
[00115] As also seen in Figure 18, the staple forming pockets 910, 930, 950, 970 are arranged so that a line of radius R1, extending outward from the center of the anvil 900, passes through the point staple entry pocket 932 from the staple forming pocket 930 and through the staple entry point 972 of the staple forming pocket 970. Thus, the staple forming pockets 930, 970 overlap over a radial dimension. In addition, another line of radius R1, extending outwardly from the center of the anvil 900, passes through the staple entry point 912 of the staple forming pocket 910 and through the staple entry point 952 of the forming pocket of staples 950. Thus, the staple forming pockets 910, 970 overlap over a radial dimension. In addition, another line of radius Rl, which extends
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49/66 outward from the center of the anvil 900, passes between the staple forming pockets 910, 930, so that the staple forming pockets 910, 930 in each pair of staple forming pockets 910, 930 do not overlap the along a radial dimension. Similarly, another line of radius R1, extending outward from the center of anvil 900, passes between the staple forming pockets 950, 970, so that the staple forming pockets 950, 970 in each pair of staple forming pockets 950, 970 do not overlap along a radial dimension.
[00116] Although the view shown in Figure 18 shows only a portion of the entire circumference of anvil 900, it should be understood that the structures shown in Figure 18 extend across the entire circumference of anvil 900. The view in Figure 18 is it is simply provided as an enlargement to show the structure in more detail and is not intended to suggest that the structures shown are located only in a limited angular range along the circumference of the anvil 900.
[00117] Figures 19-20 show two annular arrays of clamps 980, 990 that were formed using anvil 900. As shown, crowns 982 are all substantially aligned along the inner circumferential line Cl; whereas crowns 992 are all substantially aligned along the outer circumferential line C1. Figures 19-20 also show how the legs 984, 994 are deflected outwardly from the corresponding circumferential lines Cl; and as the legs 986, 996 are deflected inwardly with respect to the corresponding circumferential lines Cl. Therefore, it should be understood that the clamps formed 980, 990 are substantially three-dimensional - they extend along a circumferential dimension (that is, along the circumferential line Cl), they extend along a longitudinal dimension (that is, inwardly)
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50/66 and off the page in the view in Figure 19) and extend along a radial dimension.
F. Exemplary anvil with inverted matrices of staple-forming pockets and non-overlapping formed leg configuration without lateral leg deflection [00118] Figure 21 shows an exemplary alternative platform member 1000, while Figure 22 shows an alternative example anvil 1100 that can be used with platform member 1000. Platform member 1000 and anvil 1100 can both be used with a modified version of instrument 10. It should be understood that platform member 1000 can be readily incorporated into the set of stapling head 300 in place of platform member 320. Platform member 1000 in this example is configured and operable exactly like platform member 320, except for the differences described below. The platform member 1000 of the present example comprises a platform surface 1006 that defines an inner ring matrix of clip openings 1002 and an outer ring matrix of clip openings 1004. A clip 1080 is positioned in each inner clip opening 1002 as a clamp 1090 is positioned in each external clamp opening 1004. It should be understood that a clamp trigger member (not shown), which can be configured and operable in a manner similar to the clamp trigger member 350 described above, can be positioned under the clamps 1080, 1090 and in this way can direct the clips 1080, 1090 out through the openings 1002, 1004.
[00119] Openings 1002 are configured and arranged so that openings 1002 are oriented obliquely to the circumferential line Cl. In particular, openings 1002 are configured and arranged so that the circumferential line Cl will pass through
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51/66 through the center of each crown 1082 of each clamp 1080; so that the first leg 1084 of each clamp 1080 is positioned radially inward with respect to the circumferential line C1; and so that the second leg 1086 of each clamp 1080 is positioned radially outwardly with respect to the circumferential line C1. Similarly, openings 1004 are configured and arranged so that openings 1004 are oriented obliquely to the circumferential line Cl. In particular, the openings 1004 are configured and arranged so that the circumferential line C1 will pass through the center of each crown 1092 of each clamp 1090; so that the first leg 1094 of each clamp 1090 is positioned radially outwardly with respect to the circumferential line C1; and so that the second leg 1096 of each clamp 1090 is positioned radially inward with respect to the circumferential line Cl.
[00120] The anvil 1100 in this example is configured and operable just like the anvil 400, except for the differences described below. The anvil 1100 of the present example comprises a proximal surface 1106 that defines an internal ring matrix 1102 of the staple forming pockets 1110, 1130 and an external ring matrix 1104 of the staple forming pockets 1150, 1170. In some versions, a beveled edge (not shown) extends around the outer perimeter of the proximal surface 106. It should be understood that the anvil 1100 can be attached to the trocar 330, that the proximal surface 106 can be used to compress the tissue against the platform surface 1006 and that a trigger staple (not shown) can drive the staples 1080, 1090 through the fabric into the staple forming pockets 1110, 1130, 1150, 1170 and thereby form the staples 1080, 1090 on the fabric.
[00121] In the present example, all staple forming pockets 1110, 1130, 1150, 170 are configured identically
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52/66 to each other. In particular, each staple forming pocket 1110, 1130, 1150, 1170 has a generally rectangular shape on the proximal surface 1106, so that the staple forming pockets 1110, 1130, 1150, 1170 do not taper along the proximal surface 1106. However, the side walls of the staple-forming pockets 1110, 1130, 1150, 1170 slope towards each other as the side walls approach the bases of the staple-forming pockets 1110, 1130, 1150, 1170. The bases of the staple forming pockets 1110, 1130, 1150, 1170 are concave, so that a staple leg 1084, 1086, 1094, 1096 will first find a corresponding staple entry point, then it will generally fold towards the other staple leg 1080, 1090 along a foreground that is orthogonal to the geometric axis of the first unformed leg, and then folds proximally backwards generally towards crown 1082, 1092 of clamp 1080, 1090.
[00122] As also seen in Figure 22, each pair of staple forming pockets 1110, 1130 is centered along a corresponding circumferential line Cl, and each pair of staple forming pockets 1150, 1170 is also centered along a line corresponding circumferential Cl. In particular, an internal circumferential line C1 passes through the center and opposite corners of each pair of staple forming pockets 1110, 1130; while an outer circumferential line Cl passes through the center and opposite corners of each pair of staple forming pockets 1150, 1170. Although the staple forming pockets 1110, 1130, 1150, 1170, as pairs, are centered along the circumferential lines corresponding Cl, each pair of staple forming pockets 1110, 1130, 1150, 1170 is oriented obliquely with respect to the corresponding circumferential line Cl. In addition, each
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53/66 staples 1110 is angularly aligned with the other staple forming pocket 1130 in the pocket pair 1110, 1130; and each staple forming pocket 1150 is angularly aligned with the other staple forming pocket 1170 in the pocket pair 1150, 1170.
[00123] In the present example, the inner matrix 1102 and the outer matrix 1104 are arranged to provide mirror symmetry, so that pocket 1110 in each pair of inner pockets 1110, 1130 that provides the outermost formed leg 1086 is at the bottom ( in the view of Figure 22) of pocket pair 1110, 1130; and so that pocket 1170 in each pair of outer pockets 1150, 1170 that provides the innermost formed leg 1096 is at the bottom (in Figure 22) of pocket pair 1150, 1170. In contrast, pocket 1130 in each inner pocket pair 1110, 1130 providing the innermost formed leg 1084 is at the top (in view of Figure 22) of pocket pair 1110, 1130; and pocket 1150 in each pair of outer pockets 1150, 1170 that provides the outermost formed leg 1094 is at the top (in view of Figure 22) of pocket pair 1150, 1170. Thus, the symmetry between the matrices 1102, 1104 is opposite to the symmetry between matrices 502, 504 described above. Instead, the symmetry between matrices 1102, 1104 is similar to the symmetry between matrices 702, 704 and the symmetry between matrices 902, 904.
[00124] As also seen in Figure 22, the staple forming pockets 1110, 1130, 1150, 1170 are arranged so that a line of radius R1, extending outward from the center of the anvil 1100, passes between the pockets staple former 1150, 1170, so that staple former pockets 1150, 1170 in each pair of staple former pockets 1150, 1170 do not overlap along a radial dimension. In addition, another line of radius R1, extending outward from the center of the anvil 1100, passes between the staple forming pockets 1110, 1130, so that the
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54/66 staple forming pockets 1110, 1130 in each pair of staple forming pockets 1110, 1130 do not overlap along a radial dimension. In addition, another line of radius R1, extending outward from the center of the anvil 1100, passes through a staple forming pocket 1130 and through the staple forming pocket 1170. Thus, the staple forming pockets 1130, 1170 overlap along a radial dimension. It should be understood that the staple forming pockets 1110, 1150 have the same type of overlap along a radial dimension.
[00125] In the present example, the staples 1090, 1080 formed by the anvil 1100 are only substantially two-dimensional - they extend along the dimension that is oblique to the circumferential line Cl and extend along the longitudinal dimension (that is, inwardly) and off the page in the view in Figure 22). This two-dimensional configuration of clamps formed 1090, 1090 creates an appearance similar to the letter B.
[00126] Although the view shown in Figure 22 shows only a portion of the entire circumference of the anvil 1100, it should be understood that the structures shown in Figure 22 extend across the entire circumference of the anvil 1100. The view in Figure 22 is it is simply provided as an enlargement to show the structure in more detail and is not intended to suggest that the structures shown are located only in a limited angular range along the circumference of the 1100 anvil.
Ill · Exemplary combinations [00127] The following examples refer to several non-exhaustive ways in which the teachings of the present invention can be combined or applied. It should be understood that the following examples are not intended to restrict coverage of any claims that may be submitted at any time in this pe
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55/66 due or in deposits subsequent to this request. No rights waiver is intended. The following examples are provided for illustrative purposes only. It is contemplated that the various teachings of the present invention can be arranged and applied in several other ways. It is also contemplated that some variations may omit certain features referred to in the examples below. Therefore, none of the aspects or resources referred to below should be considered critical, unless explicitly stated otherwise at a later date by the inventors or by a successor of interest to the inventors. If any claims are made in this application or in subsequent filings related to this application that include additional features in addition to those listed below, it is not assumed that these additional features have been added for any reason related to patentability. Example 1 [00128] Apparatus characterized by the fact that it comprises: (a) an anvil surface configured to compress the fabric against a platform surface, where the anvil surface defines: (i) an internal ring matrix of pockets forming staples, wherein the internal annular matrix of staple-forming pockets comprises a plurality of pairs of staple-forming pockets, wherein each pair of staple-forming pockets in the internal annular matrix comprises: (A) a first staple-forming pocket and ( B) a second staple forming pocket, and (ii) an external ring matrix of staple forming pockets, wherein the external ring matrix of staple forming pockets comprises a plurality of pairs of staple forming pockets, where each pair of staple forming pockets in the outer ring matrix comprise: (A) a first staple forming pocket and (B) a second staple forming pocket, in which the outer annular matrix of forming pockets in
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56/66 staples is arranged in mirrored symmetry with the internal ring matrix of staple forming pockets; and (b) an anvil drive axis that extends along a longitudinal geometric axis, where the anvil drive axis is configured to mate with a stapling head assembly of a surgical stapler.
Example 2 [00129] The apparatus of Example 1, wherein the first staple-forming pocket of each pair of staple-forming pockets of the inner ring matrix is located radially on the outer side of the second staple-forming pocket of the same pair of forming pockets. staples of the internal annular matrix.
Example 3 [00130] The apparatus of Example 2, wherein the second staple forming pocket of each pair of staple forming pockets of the outer annular matrix is located radially on the outside of the first staple forming pocket of the same pair of forming pockets. staples of the external annular matrix.
Example 4 [00131] The apparatus of Example 3, wherein the first staple-forming pocket of each pair of staple-forming pockets in the internal annular matrix includes a folded or chamfered region, wherein the folded or chamfered region is configured to provide a minimum wall thickness between the first staple forming pocket of each pair of staple forming pockets of the inner ring matrix and a corresponding first staple forming pocket of each pair of staple forming pockets of the outer ring matrix.
Example 5 [00132] The apparatus of Example 4, wherein the first staple forming pocket of each pair of staple forming pockets of the hand
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57/66 internal annular groove overlaps with a corresponding second staple-forming pocket of each pair of staple-forming pockets of the external annular matrix along a radial dimension.
Example 6 [00133] The apparatus of Example 5, wherein the second staple-forming pocket of each pair of staple-forming pockets of the inner ring matrix overlaps with a corresponding first staple-forming pocket of each pair of staple-forming pockets of the external annular matrix along a radial dimension.
Example 7 [00134] The apparatus of any one or more of Examples 1 to 6, wherein the first staple-forming pocket of each pair of staple-forming pockets of the internal ring matrix overlaps with a corresponding second staple-forming pocket of the same pair of staple forming pockets of the internal annular matrix along a radial dimension.
Example 8 [00135] The apparatus of any one or more of Examples 1 to 7, wherein the first staple-forming pocket of each pair of staple-forming pockets of the outer annular matrix overlaps with a corresponding second staple-forming pocket of the same pair of staple forming pockets of the external annular matrix along a radial dimension.
Example 9 [00136] The apparatus of any one or more of Examples 1 to 8, in which each staple forming pocket has a generally triangular shape defined partially by two generally flat sides that taper towards each other from a region staple entry point towards a staple exit region.
Example 10
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58/66 [00137] The apparatus of any one or more of Examples 1 to 9, wherein each staple forming pocket is configured to deform a staple along three dimensions.
Example 11 [00138] The apparatus of Example 10, wherein the three dimensions include a longitudinal dimension parallel to the longitudinal geometric axis, a first orthogonal dimension that extends orthogonally with respect to the longitudinal geometric axis and a second orthogonal dimension that extends orthogonally in longitudinal axis.
Example 12 [00139] The apparatus of any one or more of Examples 1 to 11, wherein the first staple forming pockets of the internal annular matrix are configured to deform a staple leg radially outwardly in relation to the longitudinal geometric axis, where the second staple forming pockets of the internal annular matrix are configured to deform a staple leg radially inwardly in relation to the longitudinal geometric axis.
Example 13 [00140] The apparatus of any one or more of Examples 1 to 12, wherein each pair of staple-forming pockets in the internal annular matrix is substantially centered along a circumferential line that extends along the anvil surface in a constant radius from the longitudinal geometric axis.
Example 14 [00141] The apparatus of any one or more of Examples 1 to 13, wherein each first staple forming pocket of the internal annular matrix is substantially centered along a circumferential line extending along the anvil surface in a constant radius from the longitudinal geometric axis, where each
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59/66 second staple-forming pocket of the internal annular matrix is obliquely oriented in relation to the same circumferential line that extends along the anvil surface in a constant radius from the longitudinal geometric axis.
Example 15 [00142] The apparatus of any one or more of Examples 1 to 14, wherein each first staple forming pocket of the internal annular matrix comprises a staple entry region and a staple exit region, wherein the region of staple staple inlet is wider than the staple exit region.
Example 16 [00143] The apparatus of Example 15, in which the staple entry region is partially defined by a first side wall and by an opposite second side wall, in which the staple exit region is partially defined by the first side wall and by a third opposite side wall, in which each first staple forming pocket of the internal annular matrix additionally comprises a fourth side wall which allows an angled transition from the second side wall to the third side wall.
Example 17 [00144] The apparatus of any one or more of Examples 1 to 16, which further comprises a staple head assembly, the staple head assembly comprising: i a platform surface, wherein the platform surface it is configured to cooperate with the anvil surface to compress the tissue, ii a plurality of staple openings formed across the platform surface, wherein the staple openings comprise: To an internal annular matrix of staple openings corresponding to the internal annular matrix of staple forming pockets and B an external ring matrix of corresponding staple openings
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60/66 teeth to the external annular matrix of staple forming pockets, iii a plurality of staples, each staple being positioned in a corresponding staple opening of a plurality of staple openings, iv an operable staple driver to direct the staples through the clamp openings and towards the anvil surface and see a drive shaft configured to couple with the drive shaft of the anvil.
Example 18 [00145] The apparatus of any one or more of Examples 1 to 17, wherein the internal ring matrix of staple forming pockets is configured so that the first staple forming pocket of each pair of staple forming pockets does not overlap the second staple-forming pocket of the same pair of staple-forming pockets along a radial dimension.
Example 19 [00146] Apparatus characterized by the fact that it comprises: (a) an anvil surface configured to compress the fabric against a platform surface, where the anvil surface defines: (i) an internal ring matrix of pockets forming staples, wherein the internal annular matrix of staple-forming pockets comprises a plurality of pairs of staple-forming pockets, wherein each pair of staple-forming pockets in the internal annular matrix comprises: (A) a first staple-forming pocket and ( B) a second staple forming pocket, in which the first staple forming pocket of each pair of staple forming pockets of the inner ring matrix is located radially on the outside of the second staple forming pocket of the same pair of staple forming pockets of the internal annular matrix, and (ii) an external annular matrix of staple-forming pockets, wherein the external annular matrix of staple-forming pockets comprises a plurality ade of
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61/66 pairs of staple-forming pockets, where each pair of staple-forming pockets in the outer ring matrix comprises: (A) a first staple-forming pocket and (B) a second staple-forming pocket, in which the second pocket staple former of each pair of staple former pockets of the outer ring matrix is located radially on the outer side of the first staple former of the same pair of staple former pockets of the outer annular matrix, wherein the first staple former pocket of each pair of staple forming pockets of the internal annular matrix overlaps with a corresponding second staple forming pocket of each pair of staple forming pockets of the external annular matrix along a radial dimension; and (b) an anvil drive axis that extends along the longitudinal geometric axis, where the anvil drive axis is configured to couple with a stapling head assembly of a surgical stapler.
Example 20 [00147] Apparatus characterized by the fact that it comprises: (a) a drive shaft assembly; (b) a staple head assembly located at a distal end of the drive shaft assembly, wherein the staple head assembly comprises: (i) a platform surface, (ii) a first annular array of staple openings formed through the platform surface, (iii) a second annular matrix of staple openings formed through the platform surface and (iv) a plurality of staples associated with the first and second annular matrices of staple openings, wherein the set of stapling head is operable to direct the staples through the first and second annular arrays of staple openings; and (c) an anvil, where the anvil comprises: (i) an anvil surface configured to
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62/66 compressing the fabric against the platform surface, (ii) a first annular matrix of staple-forming pockets formed on the anvil surface, wherein the first annular matrix of staple-forming pockets comprises a plurality of pairs of staple-forming pockets staples and (iii) a second annular matrix of staple forming pockets formed on the anvil surface, wherein the second annular matrix of staple forming pockets comprises a plurality of pairs of staple forming pockets, wherein the pairs of the second annular matrix provide specular symmetry with the pairs of the first annular matrix.
IV · Miscellaneous [00148] It should be understood that the above teachings can be readily combined with the teachings of US patent application No. [attorney document number END7975USNP .0637659], entitled Circular Surgical Stapler with Recessed Deck and Raised Circumferential Edges filed on the same date as this application, the disclosure of which is hereby incorporated by reference. Various suitable ways in which the teachings of the invention and the teachings of US patent application No. [attorney document number END7975USNP.0637659] can be combined will be apparent to those skilled in the art.
[00149] It should be understood that the above teachings can be readily combined with the teachings of US patent application No. [Attorney document number END7976USNP.0637662], entitled Atraumatic Stapling Head Features for Circular Surgical Stapler, filed in the same date of this application, the disclosure of which is hereby incorporated by reference. Various suitable ways in which the teachings of the invention and the teachings of US patent application No. [attorney document number END7976USNP.0637662] can be combinedPetition 870190053251, of 11/06/2019, p. 66/103
63/66 and will be evident to those skilled in the art.
[00150] It should be understood that the above teachings can be readily combined with the teachings of US patent application No. [attorney document number END7978USNP.0637666], entitled Circular Surgical Stapler with Angularly Asymmetric Deck Features, filed in the same date of this application, the disclosure of which is hereby incorporated by reference. Various suitable ways in which the teachings of the invention and the teachings of US patent application No. [attorney document number END7978USNP.0637666] can be combined and will be apparent to those skilled in the art.
[00151] It should also be understood that any one or more of the teachings, expressions, modalities, examples, etc. described here can be combined with any one or more of the other teachings, expressions, modalities, examples, etc. that are described here. The teachings, expressions, modalities, examples, etc. described above should therefore not be seen in isolation from each other. Various suitable ways in which the teachings of the present invention can be combined will become readily apparent to those skilled in the art in view of the teachings of the present invention. These modifications and variations are intended to be included in the scope of the attached claims.
[00152] At least some of the teachings of the present invention can readily be combined with one or more of the teachings of US Patent No. 7,794,475, entitled Surgical Staples Having Compressible or Crushable Members for Securing Tissue Therein and Stapling Instruments for Deploying the Same, granted September 14, 2010, the disclosure of which is incorporated into the present invention, as a reference; in US publication No. 2014/01 51429, entitled Trans-Oral Circular Anvil Introduction System with Dilation Feature,
Petition 870190053251, of 11/06/2019, p. 67/103
64/66 published on June 5, 2014, the disclosure of which is hereby incorporated by reference; US publication No. 2014/0144968, entitled Surgical Staple with Integral Pledget for Tip Deflection, published on May 29, 2014, the disclosure of which is hereby incorporated by reference; US publication No. 2014/0158747, entitled Surgical Stapler with Varying Staple Widths along Different Circumferences, published on June 12, 2014, the disclosure of which is hereby incorporated by reference; in US publication No. 20 14/0144969, entitled Pivoting Anvil for Surgical Circular Stapler, published on May 29, 2014, the disclosure of which is hereby incorporated by reference; US publication No. 2014/0151430, entitled Circular Anvil Introduction System with Alignment Feature, published on June 5, 2014, the disclosure of which is hereby incorporated by reference; US publication No. 2014/0166717, entitled Circular Stapler with Selectable Motorized And Manual Control, Including a Control Ring, published on June 19, 2014, the disclosure of which is hereby incorporated by reference; US publication No. 2014/0166 728, entitled Motor Driven Rotary Input Circular Stapler with Modular End Effector, published on June 19, 2014, the disclosure of which is hereby incorporated by reference; and / or US publication No. 2014/0166718, entitled Motor Driven Rotary Input Circular Stapler with Modular Flexible Shaft, published on June 19, 2014, the disclosure of which is hereby incorporated by reference. Various suitable ways in which such teachings can be combined will be evident to those skilled in the art.
[00153] It should be understood that any patent, publication, or other disclosure material taken as incorporated by reference in this invention for reference, in whole or in part, is incorporated into the present invention only insofar as the incorporated material does not conflict definitions, statements or other material
Petition 870190053251, of 11/06/2019, p. 68/103
65/66 al disclosed presented in this disclosure. Accordingly, and to the extent necessary, the disclosure as explicitly presented herein replaces any conflicting material incorporated by reference to the present invention. Any material, or portion thereof, which is incorporated herein by reference, but which conflicts with the definitions, statements, or other disclosure materials contained herein, will be incorporated here only insofar as there is no conflict between the material embedded and existing disclosure material.
[00154] Versions of the devices described above may have application in conventional medical treatments and procedures conducted by a medical professional, as well as application in medical treatments and procedures assisted by robotics. As an example only, several teachings of the present invention can readily be incorporated into a robotic surgical system such as the DAVINCI ™ system by Intuitive Surgical, Inc., of Sunnyvale, California, USA. [00155] The versions described above can be designed to be discarded after a single use or can be designed to be used multiple times. The versions can, in either or both cases, be reconditioned for reuse after at least one use. Reconditioning can include any combination of steps to disassemble the device, followed by cleaning or replacing specific parts and subsequent reassembly. Specifically, some versions of the device can be disassembled into any number of particular parts or parts of the device can be selectively replaced or removed in any combination. By cleaning and / or replacing specific parts, some versions of the device can be reassembled for subsequent use in a reconditioning facility or by a user immediately before a surgical procedure. The
Petition 870190053251, of 11/06/2019, p. 69/103
Those skilled in the art will understand that the reconditioning of a device can use a variety of disassembly, cleaning / replacement and reassembly techniques. The use of these techniques, as well as the resulting refurbished device, are all within the scope of this application.
[00156] Just as an example, the versions described here can be sterilized before and / or after a procedure. In a sterilization technique, the device is placed in a closed and sealed container, such as a plastic or TYVEK bag. The container and the device can then be placed in a radiation field, such as gamma radiation, X-rays or high-energy electrons, which can penetrate the container. Radiation can kill bacteria on the device and the container. The sterile device can then be stored in a sterile container for later use. The device can also be sterilized using any other known technique, including, but not limited to, beta or gamma radiation, ethylene oxide or water vapor.
[00157] Having shown and described various modalities of the present invention, other adaptations of the methods and systems described in the present invention can be made by means of suitable modifications by a person skilled in the art without departing from the scope of the present invention. Several of these possible modifications have been mentioned, and others will be evident to those skilled in the art. For example, the examples, modalities, geometry, materials, dimensions, proportions, stages and the like discussed above are illustrative and are not mandatory. Consequently, the scope of the present invention should be considered in accordance with the terms of the following claims and it is understood that it is not limited to the details of the structure and operation shown and described in the specification and drawings.

权利要求:
Claims (20)
[1]
1. Apparatus characterized by the fact that it comprises:
(a) an anvil surface configured to compress tissue against a platform surface, where the anvil surface defines:
(i) an internal annular matrix of staple-forming pockets, wherein the internal annular matrix of staple-forming pockets comprises a plurality of pairs of staple-forming pockets, wherein each pair of staple-forming pockets in the internal annular matrix comprises:
(A) a first staple-forming pocket, and (B) a second staple-forming pocket, and (ii) an external annular matrix of staple-forming pockets, wherein the external annular matrix of staple-forming pockets comprises a plurality of pairs of staple-forming pockets, with each pair of staple-forming pockets in the outer ring matrix comprising:
(A) a first staple-forming pocket, and (B) a second staple-forming pocket, in which the external annular matrix of staple-forming pockets is arranged in a mirrored symmetry with the internal annular matrix of staple-forming pockets; and (b) an anvil drive axis that extends along a longitudinal geometric axis, where the anvil drive axis is configured to mate with a stapling head assembly of a surgical stapler.
[2]
2. Apparatus according to claim 1, characterized by the fact that the first staple forming pocket of each pair of staple forming pockets of the inner ring matrix is located radially on the outside of the second staple forming pocket of the
Petition 870190053251, of 11/06/2019, p. 71/103
2/8 same pair of staple forming pockets of the internal ring matrix.
[3]
3. Apparatus according to claim 2, characterized by the fact that the second staple forming pocket of each pair of staple forming pockets of the outer annular matrix is located radially on the outside of the first staple forming pocket of the same pair of staple forming pockets of the outer annular matrix.
[4]
4. Apparatus according to claim 3, characterized by the fact that the first staple forming pocket of each pair of staple forming pockets of the internal annular matrix includes a folded or chamfered region, in which the folded or chamfered region is configured to provide a minimum wall thickness between the first staple forming pocket of each pair of staple forming pockets of the inner ring matrix and a corresponding first staple forming pocket of each pair of staple forming pockets of the outer ring matrix.
[5]
5. Apparatus according to claim 4, characterized by the fact that the first staple forming pocket of each pair of staple forming pockets of the inner ring matrix overlaps with a corresponding second staple forming pocket of each pair of forming pockets clip of the outer annular matrix along a radial dimension.
[6]
6. Apparatus according to claim 5, characterized by the fact that the second staple forming pocket of each pair of staple forming pockets of the inner ring matrix overlaps with a corresponding first staple forming pocket of each pair of forming pockets clip of the outer annular matrix along a radial dimension.
[7]
7. Apparatus according to claim 1, characterized by the fact that the first staple forming pocket of each pair of staple forming pockets of the internal annular matrix overlaps with
Petition 870190053251, of 11/06/2019, p. 72/103
3/8 a second corresponding staple-forming pocket of the same pair of staple-forming pockets of the internal annular matrix along a radial dimension.
[8]
8. Apparatus according to claim 1, characterized by the fact that the first staple forming pocket of each pair of staple forming pockets of the external annular matrix overlaps with a corresponding second staple forming pocket of the same pair of forming pockets clip of the outer annular matrix along a radial dimension.
[9]
9. Apparatus according to claim 1, characterized by the fact that each staple-forming pocket has a generally triangular shape partially defined by two generally flat sides that taper towards each other from a staple entry region towards a staple exit region.
[10]
10. Apparatus according to claim 1, characterized by the fact that each staple forming pocket is configured to deform a staple along three dimensions.
[11]
11. Apparatus according to claim 10, characterized by the fact that the three dimensions include a longitudinal dimension parallel to the longitudinal geometric axis, a first orthogonal dimension that extends orthogonally with respect to the longitudinal geometric axis, and a second orthogonal dimension that extends orthogonally in relation to the longitudinal geometric axis.
[12]
12. Apparatus according to claim 1, characterized by the fact that the first staple forming pockets of the internal annular matrix are configured to deform a staple leg radially outwards in relation to the longitudinal geometric axis, in which the second forming pockets clamps of the internal annular matrix are configured to deform a clamp leg radially inward with respect to the longitudinal geometric axis.
Petition 870190053251, of 11/06/2019, p. 73/103
4/8
[13]
13. Apparatus according to claim 1, characterized by the fact that each pair of staple-forming pockets in the internal annular matrix is substantially centered along a circumferential line that extends along the anvil surface in a constant radius a from the longitudinal geometric axis.
[14]
14. Apparatus according to claim 1, characterized by the fact that each first clip-forming pocket of the internal annular matrix is substantially centered along a circumferential line that extends along the anvil surface in a constant radius from of the longitudinal geometric axis, in which each second staple-forming pocket of the internal annular matrix is obliquely oriented with respect to the same circumferential line that extends along the anvil surface in a constant radius from the longitudinal geometric axis.
[15]
15. Apparatus according to claim 1, characterized by the fact that each first staple forming pocket of the internal ring matrix comprises a staple entry region and a staple exit region, wherein the staple entry region is wider than the staple exit region.
[16]
16. Apparatus according to claim 15, characterized by the fact that the staple entry region is partially defined by a first side wall and an opposite second side wall, in which the staple exit region is partially defined by first side wall and by a third opposite side wall, in which each first staple forming pocket of the internal annular matrix additionally comprises a fourth side wall which allows an angled transition from the second side wall to the third side wall.
[17]
17. Apparatus according to claim 1, characterized by the fact that it additionally comprises a set of head
Petition 870190053251, of 11/06/2019, p. 74/103
5/8 ça of stapling, and the staple head assembly comprises:
(i) a platform surface, where the platform surface is configured to cooperate with the anvil surface to compress the fabric, (ii) a plurality of staple openings formed through the platform surface, where the staple openings comprise:
(A) an internal annular matrix of staple openings corresponding to the internal annular matrix of staple forming pockets, and (B) an external annular matrix of staple openings corresponding to the external annular matrix of staple forming pockets, (iii) a plurality of staples, each staple being positioned in a corresponding staple opening of a plurality of staple openings, (iv) an operable staple driver for driving the staples through the staple openings and towards the anvil surface, and (v) a drive shaft configured to couple with the anvil drive shaft.
[18]
18. Apparatus according to claim 1, characterized in that the internal ring matrix of staple forming pockets is configured so that the first staple forming pocket of each pair of staple forming pockets does not overlap the second forming pocket of the same pair of staple forming pockets along a radial dimension.
[19]
19. Device characterized by the fact that it comprises:
(a) an anvil surface configured to compress
Petition 870190053251, of 11/06/2019, p. 75/103
6/8 woven against a platform surface, where the anvil surface defines:
(i) an internal annular matrix of staple-forming pockets, wherein the internal annular matrix of staple-forming pockets comprises a plurality of pairs of staple-forming pockets, wherein each pair of staple-forming pockets in the internal annular matrix comprises:
(A) a first staple-forming pocket, and (B) a second staple-forming pocket, wherein the first staple-forming pocket of each pair of staple-forming pockets of the inner ring matrix is located radially on the outside of the second pocket staple former of the same pair of staple former pockets of the internal annular matrix, and (ii) an external annular matrix of staple former pockets, wherein the external annular matrix of staple former pockets comprises a plurality of pairs of former forming pockets. staple, in which each pair of staple forming pockets in the outer ring matrix comprises:
(A) a first staple-forming pocket, and (B) a second staple-forming pocket, wherein the second staple-forming pocket of each pair of staple-forming pockets of the outer annular die is located radially on the outside of the first pocket staple former of the same pair of staple former pockets of the outer annular die, wherein the first staple former pocket of each pair of staple former pockets of the inner annular matrix overlaps with a corresponding second staple former pocket of each pair of staple forming pockets of the outer annular matrix along
Petition 870190053251, of 11/06/2019, p. 76/103
7/8 a radial dimension; and (b) an anvil drive axis that extends along a longitudinal geometric axis, where the anvil drive axis is configured to mate with a stapling head assembly of a surgical stapler.
[20]
20. Device characterized by the fact that it comprises:
(a) a drive shaft assembly;
(b) a stapling head assembly located at a distal end of the joint drive shaft, wherein the stapling head assembly comprises:
(i) a platform surface, (ii) a first annular matrix of clip openings formed across the platform surface, (iii) a second annular matrix of clip openings formed across the platform surface, and (iv) a plurality staples associated with the first and second annular arrays of staple openings, wherein the staple head assembly is operable to drive the staples through the first and second annular arrays of staple openings; and (c) an anvil, where the anvil comprises:
(i) an anvil surface configured to compress fabric against the platform surface, (ii) a first annular matrix of staple-forming pockets formed on the anvil surface, wherein the first annular matrix of staple-forming pockets comprises a plurality of pairs of staple forming pockets, and (iii) a second annular matrix of staple forming pockets formed on the anvil surface, wherein the second annular matrix of staple forming pockets comprises a plurality
Petition 870190053251, of 11/06/2019, p. 77/103
8/8 pairs of staple forming pockets, where the pairs of the second annular matrix provide specular symmetry with the pairs of the first annular matrix.

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法律状态:
2021-10-05| B350| Update of information on the portal [chapter 15.35 patent gazette]|

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2022-02-15| B06W| Patent application suspended after preliminary examination (for patents with searches from other patent authorities) chapter 6.23 patent gazette]|

优先权:

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申请号 | 申请日 | 专利标题

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US15/350,621|US20180132849A1|2016-11-14|2016-11-14|Staple forming pocket configurations for circular surgical stapler anvil|

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PCT/US2017/035117|WO2018089052A1|2016-11-14|2017-05-31|Staple forming pocket configurations for circular surgical stapler anvil|

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