Surgical stapling device with firing lockout

Abstract

A surgical stapling device includes a tool assembly including an anvil and a cartridge assembly movable relative to one another between an open position and a clamped position. The cartridge assembly includes a cartridge replaceable after each firing of the stapling device to facilitate reuse of the stapling device. The anvil includes a lockout mechanism that prevents operation of the stapling device when the cartridge has been previously fired. The lockout mechanism is adapted to move from a locked position to an unlocked position upon replacement of the cartridge and movement of the tool assembly from the open position to the clamped position.

Description

Technical Field

[0001] This disclosure relates to a surgical suturing device, and more specifically, to a surgical suturing device with a locking mechanism to prevent the suturing device from being detonated by a used staple cartridge. Background Technology

[0002] Surgical suturing devices for simultaneously suturing and cutting tissue are well known in the art. Typically, these suturing devices comprise a tool assembly and a drive assembly. The tool assembly includes an anvil assembly and a staple cartridge assembly, the staple cartridge assembly having a staple cartridge containing a blade and an actuating slider. The drive assembly is movable relative to the anvil and staple cartridge assembly to move the tool assembly between an open position and a clamping position, advancing the blade and actuating slider to eject staples from the staple cartridge and cut the tissue clamped between the anvil and staple cartridge assembly. After firing the suturing device, the actuating slider remains in the advanced position within the tool assembly.

[0003] In some suturing devices, the staple cartridge is housed within a grooved component of the staple cartridge assembly and is replaceable to facilitate reuse of the suturing device. To prevent the advance of the tool assembly's blade after a staple has been fired from the cartridge, the tool assembly may include a locking component. When the slider is in its advanced position, the locking component can move from an unlocked position to a locked position to engage with the drive assembly, preventing further advance of the drive assembly. In some suturing devices, the locking component can move to the unlocked position in response to the insertion of a new staple cartridge into the grooved component.

[0004] There has always been a need for a simple locking mechanism that prevents the advancement of the suture device's drive assembly when the used staple cartridge is positioned within the groove of the staple cartridge assembly. Summary of the Invention

[0005] This disclosure relates to a surgical suturing device having a tool assembly comprising an anvil and a staple cartridge assembly movable relative to each other between an open position and a clamping position. The staple cartridge assembly includes a staple cartridge that can be replaced after each firing of the suturing device to facilitate reuse of the suturing device. The anvil includes a locking mechanism that prevents operation of the suturing device when the staple cartridge has been previously fired. When the staple cartridge is replaced and the tool assembly moves from the open position to the clamping position, the locking mechanism moves from a locked position to an unlocked position.

[0006] One aspect of this disclosure relates to a surgical suturing device comprising an elongated body, a tool assembly, a locking mechanism, and a drive assembly. The elongated body has a proximal portion and a distal portion. The tool assembly is supported on the distal portion of the elongated body and includes an anvil and a cartridge assembly. The cartridge assembly includes a channel member and a cartridge removably housed within the channel member. The cartridge includes a cartridge body, staples, and an actuation slider assembly comprising an actuation slider and a blade supported on the actuation slider. The actuation slider assembly is movable through the cartridge body between a retracted position and an advanced position. The anvil includes an anvil body and is coupled to the cartridge assembly, such that the tool assembly is movable between an open position and a clamping position. The locking mechanism is supported on the anvil and includes a locking member movable between a locked position and an unlocked position in response to movement of the tool assembly from the open position to the clamping position. The drive assembly includes a clamping member movable relative to the tool assembly between a retracted position and an advanced position. The locking member is positioned to prevent the clamping member from moving from the retracted position to the advanced position in the locked position.

[0007] Another aspect of this disclosure relates to an anvil assembly comprising an anvil and a locking mechanism. The anvil includes an anvil body having a nail-forming surface defining a plurality of nail-forming recesses and a central cutting groove. The nail-forming recesses are positioned on opposite sides of the central cutting groove. The locking mechanism is supported on the anvil body and includes a locking member movable between a locked position and an unlocked position.

[0008] In all aspects of this disclosure, the locking component is biased to the locking position.

[0009] In some aspects of this disclosure, when the actuated slider assembly is in its retracted position, the locking member engages the actuated slider assembly to hold the locking member in the unlocked position.

[0010] In some aspects of this disclosure, the locking mechanism includes a pivoting member that pivotally secures the locking element to the anvil body.

[0011] In various aspects of this disclosure, the locking mechanism includes a biasing member for pushing the locking member toward the locking position.

[0012] In some aspects of this disclosure, the biasing component includes a torsion spring.

[0013] In some aspects of this disclosure, the locking mechanism includes a pin that extends through the anvil body and engages with a locking member to prevent the locking member from moving outward.

[0014] In various aspects of this disclosure, the locking member is cantilevered to the anvil body and includes a resilient arm that is deformable to move the locking member from a locked position to an unlocked position.

[0015] In some aspects of this disclosure, the locking mechanism includes an offset mechanism that supports an arm on the anvil body and is positioned to push the locking member toward the locking position.

[0016] In some aspects of this disclosure, the biasing mechanism includes a post and a helical spring positioned about the post and engaging with an arm of a locking member to push the locking member toward a locked position.

[0017] In various aspects of this disclosure, the locking mechanism includes a locking plate and a locking component, and the anvil body defines a first through hole and a second through hole.

[0018] In some aspects of this disclosure, the locking plate includes a U-shaped clip and a guide member, the U-shaped clip extending through a first through-hole and pivotally coupled to the locking member, and the guide member extending through a second through-hole.

[0019] In some aspects of this disclosure, the locking component is pivotable between a locked position and an unlocked position.

[0020] In various aspects of this disclosure, the anvil body includes an outer surface defining a groove, and a locking plate is housed within the groove and movable between a raised position and a lowered position.

[0021] In some aspects of this disclosure, the raised position corresponds to the locked position of the locking component, and the lowered position corresponds to the unlocked position of the locking plate.

[0022] In some aspects of this disclosure, the locking mechanism includes a first biasing member positioned to push the locking plate toward a lowered position.

[0023] In various aspects of this disclosure, the locking mechanism includes a second biasing member positioned to push the locking member toward the locking position.

[0024] Other features of this disclosure will be understood from the following description. Attached Figure Description

[0025] Various aspects of this disclosure are described herein with reference to the accompanying drawings, in which:

[0026] Figure 1 A side perspective view of a surgical suturing device including a tool assembly with a locking mechanism according to various aspects of this disclosure, wherein the tool assembly is in the open position;

[0027] Figure 2 for Figure 1 A magnified view of the indicated detail area shown in the image;

[0028] Figure 3 for Figure 2 The image shows a side perspective view of the tool component in a clamped position;

[0029] Figure 4 for Figure 1 A side perspective view of the clamping component of the drive assembly of the suture device shown in the image;

[0030] Figure 5 for Figure 3 The tool assembly shown is a side perspective view of the knife and actuating slider.

[0031] Figure 6 for Figure 4 and 5 The image shows a side perspective view of the clamping component, the actuating slider, and the knife, wherein the clamping component is engaged with the actuating slider;

[0032] Figure 7 for Figure 3 The image shows a perspective view of the anvil of the tool assembly, with a locking mechanism fastened to the anvil;

[0033] Figure 8 for Figure 7 The perspective view of the anvil and locking mechanism shown in the figure, wherein the locking mechanism is separate from the anvil;

[0034] Figure 9 For along Figure 3 A cross-sectional view taken by section line 9-9, with the locking mechanism in the unlocked position;

[0035] Figure 10 for Figure 9 The tool assembly shown is a side perspective view of its clamping component, actuating slider, and locking mechanism, with the locking mechanism in the unlocked position.

[0036] Figure 11 For along Figure 9 The cross-sectional view taken by section line 11-11;

[0037] Figure 12 This is a cross-sectional view captured by the tool component, showing the locking mechanism in the unlocked position;

[0038] Figure 13 for Figure 12 The tool assembly shown is a side perspective view of its clamping component, actuating slider, and locking mechanism, with the locking mechanism in the locked position.

[0039] Figure 14 For along Figure 12 The cross-sectional view taken by section line 14-14;

[0040] Figure 15 for Figure 1 A perspective view of an alternative version of the tool assembly and locking mechanism of the sewing device shown in the figure;

[0041] Figure 16 for Figure 15 The perspective view of the anvil and locking mechanism shown in the figure, wherein the locking mechanism is separate from the anvil;

[0042] Figure 17 for Figure 1 The tool assembly shown includes a clamping component and an actuating slider. Figure 16 The image shows a side perspective view of the locking mechanism, with the locking mechanism in the unlocked position.

[0043] Figure 18 This is a cross-sectional view captured by the tool component, where Figure 17 The locking mechanism shown in the image is in the unlocked position;

[0044] Figure 19 for Figure 1 The tools and components shown in the document Figure 15 The image shows a side perspective view of the locking mechanism in the locked position.

[0045] Figure 20 for Figure 1 The tool assembly shown includes a clamping component and an actuating slider. Figure 19 The image shows a side perspective view of the locking mechanism in the locked position.

[0046] Figure 21 for Figure 1 A perspective view of an alternative version of the anvil and locking mechanism of the tool assembly of the sewing device shown in the figure;

[0047] Figure 22 for Figure 21 The perspective view of the anvil and locking mechanism shown in the figure, wherein the locking mechanism is separate from the anvil;

[0048] Figure 23 for Figure 1 The tool assembly shown includes a clamping component and an actuating slider. Figure 22 The image shows a side perspective view of the locking mechanism, with the locking mechanism in the unlocked position.

[0049] Figure 24 This is a cross-sectional view captured by the tool component, where Figure 23 The locking mechanism shown in the image is in the unlocked position;

[0050] Figure 25 for Figure 1 The tool assembly shown includes a clamping component and an actuating slider. Figure 23 The image shows a side perspective view of the locking mechanism in the locked position.

[0051] Figure 26 for Figure 1 The tools and components shown in the document Figure 25 The image shows a side perspective view of the locking mechanism in the locked position.

[0052] Figure 27 for Figure 1 A perspective view of an alternative version of the anvil and locking mechanism of the tool assembly of the sewing device shown in the image;

[0053] Figure 28 for Figure 27 The perspective view of the anvil and locking mechanism shown in the figure, wherein the locking mechanism is separate from the anvil;

[0054] Figure 29 for Figure 1 The tool assembly shown includes a clamping component and an actuating slider. Figure 28 The image shows a side perspective view of the locking mechanism, with the locking mechanism in the unlocked position.

[0055] Figure 30 To pass Figure 1 A cropped side perspective view of an alternative version of the tool assembly of the suture device shown, the tool assembly comprising... Figure 29 Locking mechanism;

[0056] Figure 31 For along Figure 30 The cross-sectional view taken by section line 31-31;

[0057] Figure 32 For having Figure 29 The locking mechanism shown in Figure 30 The tool assembly shown is a side perspective view of its clamping parts and actuating slider, with the locking mechanism in the locked position.

[0058] Figure 33 For including those in locked positions Figure 29 Locking mechanism Figure 30 A side perspective view of the tool assembly of the suture device shown in the image; and

[0059] Figure 34 For along Figure 33 The cross-sectional view taken by section line 34-34. Detailed Implementation

[0060] The disclosed suture device will now be described in detail with reference to the accompanying drawings, wherein similar reference numerals denote the same or corresponding elements in each of the several views. However, it should be understood that aspects of this disclosure are merely examples and may be implemented in various forms. To avoid obscuring this disclosure with unnecessary detail, well-known functions or constructions have not been described in detail. Therefore, the specific structural and functional details disclosed herein should not be construed as limiting, but rather as the basis for the claims and a representative basis for teaching those skilled in the art to adopt this disclosure differently with virtually any suitable detailed structure. Furthermore, directional terms such as front, rear, upper, lower, top, bottom, distal, proximal, and similar terms are used to aid understanding of the description and are not intended to limit this disclosure.

[0061] In this specification, the term "proximal" is generally used to refer to the portion of the device closer to the clinician, while the term "distal" is generally used to refer to the portion of the device further away from the clinician. Additionally, the term "endoscope" is generally used to refer to endoscopy, laparoscopy, arthroscopy, and / or any other procedures performed through small-diameter incisions or cannulas. Furthermore, the term "clinician" is generally used to refer to medical personnel, including doctors, nurses, and support staff.

[0062] The disclosed surgical suturing device includes a tool assembly and a drive assembly for actuating the tool assembly. The tool assembly includes an anvil and a cartridge assembly movable relative to each other between an open position and a clamping position. The cartridge assembly includes a channel component and a cartridge releasably housed within the channel component and replaceable to facilitate reuse of the suturing device. The cartridge includes a clamping component, a blade, and an actuating slider that moves through a body of the cartridge in response to movement of the drive assembly from a retracted position to an advanced position to move the tool assembly from the open position to the clamping position, eject staples from the cartridge, and cut tissue clamped between the anvil and the cartridge assembly. The anvil supports a locking mechanism that moves from a locked position to an unlocked position in response to movement of the tool assembly from the open position to the clamping position. In the locked position, the locking mechanism prevents the drive assembly from moving from its retracted position to its advanced position to prevent operation of the suturing device. In the unlocked position, the locking mechanism is positioned to allow the drive assembly to move from the retracted position to the advanced position to operate the suturing device.

[0063] Figures 1 to 3The surgical suturing apparatus according to various aspects of this disclosure is generally shown as a suturing device 10 comprising a handle assembly 12, an elongated body 14, and a tool assembly 100. The elongated body 14 defines a longitudinal axis “X”. The handle assembly 12 includes a body 18 defining a handle 18a, a plurality of actuator buttons 20, a knob 22, and a hinge lever 24. The knob 22 is rotatably supported on the distal portion of the body 18 of the handle assembly 12 and supports the elongated body 14 to facilitate rotation of the elongated body 14 and the tool assembly 100 relative to the handle assembly 12 about the longitudinal axis “X”. The actuator buttons 20 control the operation of various functions of the suturing device 10, including approach, firing, and cutting. The hinge lever 24 is rotatably supported on the knob 22 and pivotable to achieve hinged engagement of the tool assembly 100 relative to the elongated body 14 about an axis transverse to the longitudinal axis “X” of the elongated body 14. Although the suturing device 10 is described as an electrically powered suturing device, it is contemplated that the disclosed tool assembly 100 will also be suitable for use with manually powered surgical suturing devices or with robotic systems for robot-controlled suturing devices. U.S. Patent No. 9,055,943 discloses a surgical suturing device including a powered handle assembly, and U.S. Patent No. 6,241,139 discloses a surgical suturing device including a manually actuated handle assembly. U.S. Patent No. 9,962,159 discloses a suturing device configured for use with a robotic system.

[0064] Figure 2 and 3 This describes a tool assembly 100 that includes an anvil assembly 102 and a staple cartridge assembly 104. The staple cartridge assembly 104 includes a staple cartridge 106 and a channel component 108 for receiving the staple cartridge 106. In various aspects of this disclosure, the staple cartridge 106 is releasably supported within the channel component 108 and is replaceable to facilitate the reuse of the tool assembly 100. The staple cartridge 106 includes a cartridge body 110 and an actuating slider 112. Figure 5 ) and multiple 114 stitches Figure 9 The main body 110 defines a central cutting groove 116 and a nail receiving recess 118. In various aspects of this disclosure, the nail receiving recess 118 is aligned in rows positioned on each side of the central cutting groove 116. Although in Figure 2 The image shows three rows of nail receiving recesses 118 on each side of the central slot 116, but it is envisioned that the cartridge body 110 may define one or more rows of nail receiving recesses 118 on each side of the central slot 116. Each of the nail receiving recesses 118 stores a staple 114. Although not shown, the staple cartridge 104 also includes a pusher that supports the staple 114 and is actuated by the slider 112 when it is pushed forward through the cartridge body 110 to eject the staple 114 from the cartridge body 110. Figure 5 Engagement. More precisely, the actuating slider 112 includes an angled cam surface 112a. Figure 5 The actuator engages and lifts the staple cartridge 104 within the cartridge body 110 to eject the staples 114 from the cartridge body 110.

[0065] Figures 4 to 7 The actuation slider 112 of the staple cartridge 106 is described. In various aspects of this disclosure, the actuation slider 112 supports the blade 120 to form an assembly that can be moved from a retracted position to an advanced position via the cartridge body 110. The blade 120 includes a longitudinal body portion 122 and a vertically positioned cutting member 124 extending from the body 122 through a central blade groove 116 in the cartridge body 110 toward the anvil 102.

[0066] Figure 7 and 8 The tool assembly 100 includes an anvil 102 comprising an anvil body 130 having a proximal portion 132 and a distal portion 134. The distal portion 134 of the anvil body 130 has a nail-forming surface 136 defining a nail-forming recess 136a. When the tool assembly 100 is moved from an open position to a clamping position to align the nail-forming recess 136a with a nail-receiving recess 118 of a nail cartridge 106, the nail-forming surface 136 is movable to be aligned side-by-side with the nail cartridge 106. The anvil body 130 defines a channel 138 and a central slot 140 communicating with the channel 138. The channel 138 has a proximal portion defined by a ramp surface 142 located on each side of the central slot 140. The proximal portion 132 of the anvil body 130 includes side flanges 144 defining openings 146. Each opening 146 receives a pivot member 148 ( Figure 3 ), so that the anvil 102 can be pivotally coupled to the channel component 108 of the staple cartridge assembly 104.

[0067] Suture device 10 ( Figure 1 The component includes a drive assembly, which includes a drive screw 150. Figure 9 ) and clamping component 152. As is known in the art, drive screw 150 is axially fixed but rotatably supported within staple cartridge assembly 104.

[0068] Figures 4 to 6The description includes a clamping member 152 comprising a body 154 having a first beam 156, a second beam 158, and a central portion 160 interconnecting the first beam 156 and the second beam 158. The central portion 160 includes a vertical support 162 and a hub 164. The vertical support 162 defines a distal baffle surface 172 and has a first end fastened to the first beam 156 and a second end fastened to a first side of the hub 164. The hub 164 has a second side connected to the second beam 158. The hub 164 defines a threaded through-hole 166 for receiving a drive screw 150. As the drive screw 150 rotates within the staple cartridge assembly 104, the clamping member 152 is driven longitudinally along the drive screw 150 within the staple cartridge 106 between a retracted position and an advanced position.

[0069] The first beam 156 is received within a groove 138 defined within the anvil body 130 of the anvil 102. When the clamping member 152 moves from its retracted position to its advanced position, the first beam 156 of the clamping member 152 engages the inclined surface 142 of the anvil body 130 to pivot the anvil 102 relative to the staple cartridge assembly 104 from an open position to a clamping position. The first beam 156 of the clamping member 152 includes distally extending fingers 156a having downwardly extending protrusions 170 along the central slot 140 of the anvil 102. Figure 7 Slide to push tissue from within the scalpel groove 140.

[0070] As the clamping member 152 moves between its retracted and advanced positions, the second beam 158 is positioned along the groove member 108 of the staple cartridge assembly 104. Figure 2 ) Extended channel 108a ( Figure 11 The clamping member 152 moves within the tool assembly 100. When the clamping member 152 moves through the tool assembly 100, the first beam 156 and the second beam 158 engage with the anvil 102 and the staple cartridge assembly 104, respectively, setting the staple forming surface 136 of the anvil 102 and the staple cartridge 106 (…). Figure 2 The largest tissue gap between ).

[0071] When the staple cartridge 106 is housed within the channel portion 108 of the staple cartridge assembly 104, the clamping portion 152 is positioned proximal to and adjacent to the actuating slider 112. In this position, the cutting portion 124 of the blade 120 is aligned with the distal baffle surface 172 of the vertical support 162 of the clamping portion 152. Figure 4 Adjacent positioning.

[0072] Figure 7 and 8This describes a locking mechanism 180 of a tool assembly 100, comprising a locking member 182, a biasing member 184, and a pivot member 186. The locking member 182 includes a circular hub portion 188, an arm 190 extending proximally from the hub portion 188, and a central lug 189. The central hub 189 includes angled sidewalls 189a. The arm 190 includes a proximal abutment surface 192. The hub portion 188 is pivotally secured to the anvil body 130 via the pivot member 186. Figure 8 Within the circular groove 194 defined in the tool assembly 100, the locking member 182 can be positioned around the axis "Z" (which is transverse to the longitudinal axis "X" of the tool assembly 100). Figure 8 Pivoting. The biasing member 184 includes a central hub portion 196 that is received around the pivoting member 186 and a first spring arm 198 and a second spring arm 200. The first spring arm 198 is fastened to the locking member 182, and the second spring arm 200 is received with a circular recess 194 of the anvil body 130 to push the locking member 182 into a locked position. In the locked position, the proximal abutment surface 192 of the locking arm 182 is axially aligned with the distal baffle surface 172 of the clamping member 152 to prevent the clamping member 152 from moving within the tool assembly 100 from a retracted position toward an advanced position.

[0073] A pin or pin 204 is inserted through an opening 206 in the anvil body 130. The pin 204 defines a plane 208 that engages the arm 190 of the locking member 182 to prevent the locking member 182 from moving outward toward the anvil body 130 of the anvil 102.

[0074] Figures 9 to 11 The tool assembly 100 is described in the clamping position, with the locking mechanism 180 in the unlocked position. When the new nail cartridge 106, i.e., the unfired nail cartridge, is positioned within the groove member 108 of the nail cartridge assembly 104 and the tool assembly 100 is moved to the clamping position, the nail forming surface 136 of the anvil 102 ( Figure 8 Move it to be aligned side-by-side with the staple cartridge 106. The cartridge body 110 of the staple cartridge 106 defines the cut 110a. Figure 11 When the tool assembly 100 moves to the clamping position, the cut 110a receives a portion of the locking member 182. When the anvil 102 pivots relative to the staple cartridge 106, the angled sidewall 189a of the central tab 189 of the locking member 182... Figure 11 The engaging blade 120 counteracts the push of the biasing member 184, pushing the locking member 182 of the locking mechanism 180 from the locked position. Figure 12 ) to unlock position ( Figure 9 In the unlocked position, the locking member 182 engages with the knife 120, and the proximal abutment surface 192 of the locking arm 182 remains outside the distal baffle surface 172 of the clamping member 152. In this position, the suturing device 10 can be fired. Figure 1 ).

[0075] Figures 12 to 14 The tool assembly 100, in which the locking mechanism 180 is in the locked position, is described. When the suture device 10 is fired, the clamping member 152 is advanced from the retracted position to the advanced position via the tool assembly 100. As the clamping member 152 moves through the tool assembly 100, it abuts and advances the actuating slider 112 and the blade 120 (which is supported on the actuating slider 112) via the staple cartridge 106. Since the actuating slider 112 is adjacent to the clamping member 152, when the clamping member 152 moves from the advanced position back to the retracted position, the actuating slider 112 and the blade 120 remain in the distal end of the staple cartridge 106. Therefore, in the suture device 10 ( Figure 1 After the firing and the clamping member 152 returns to the retracted position, the knife 120 and / or the actuating slider 112 are no longer positioned to prevent the locking member 182 of the locking mechanism 180 from moving from the unlocked position to the locked position. Therefore, in the sewing device 10 ( Figure 1 After firing and the clamping component 152 retracts, the locking component 182 is moved from the unlocked position by the biasing component 184. Figure 9 Move to the locked position. Figure 12 The proximal abutment surface 192 of the locking member 182 is positioned to align with the distal baffle surface 172 of the clamping member 152 to prevent the distal end of the clamping member 152 from moving (or being pushed forward again).

[0076] Figures 15 to 19 Explanation tool component 300 ( Figure 18 ), which includes a sewing device 10, typically shown as an anvil 302 and a locking mechanism 380. Figure 1 An alternative version of the anvil and locking mechanism. Except that the anvil 302 defines the cut 304 and through hole 306, the anvil 302 is generally similar to the anvil 102 ( Figure 7Anvil 302 includes a side flange 344. Locking mechanism 380 includes a locking member 382 and a fastening member 386. In various aspects of this disclosure, the fastening member 386 includes a screw, but other fastening members are contemplated. Locking member 382 has a resilient arm 390 including a proximal portion 390a and a distal portion 390b. The proximal portion 390a defines a hole 392, and the distal portion 390b includes an abutment member 394 having an abutment surface 394a. By inserting the screw 386 through a through hole 306 in the side flange 344 of anvil 302 and a hole 392 in the proximal portion 390a of locking member 382 and fastening the screw 386 to the inner surface of anvil 302, the proximal portion 390a of locking member 382 is cantilevered to the inner wall of one of the side flanges 344 of anvil 302. Arm 390 includes a reduced-thickness central portion 390c, which allows arm 390 to remain in a locked position without deformation. Figure 18 ) Bend outwards to the deformed unlocked position ( Figure 20 ).

[0077] Figure 17 and 18 The tool assembly 300 is described, wherein the anvil 302 is in the clamping position and the locking mechanism 380 is in the unlocked position. When the anvil 302 moves to the clamping position before the firing of the sewing device 10... Figure 18 When the adjacent member 394 engages the cutting member 124 of the blade 120, it deflects the adjacent member 394 toward the outside of the distal baffle surface 172 of the clamping member 152. In this position, the clamping member 152 can move along the drive screw 150 from its retracted position toward its advanced position to move the actuating slider 112 and the blade 120 through the staple cartridge 106 to eject the staples 114 from the staple cartridge 106 and cut the tissue clamped between the anvil 302 and the staple cartridge 106.

[0078] Figure 19 and 20 The tool assembly 300 is described, wherein the anvil 302 is in the clamping position and the locking mechanism 380 is in the locked position. In the firing sewing device 10 ( Figure 1 After that, the actuated slider 112 and the cutter 120 ( Figure 18 The clamping member 152 remains in the distal portion of the staple cartridge 106. When the clamping member 152 returns to its retracted position, the resilient arm 390 of the locking member 382 bends inward to its undeformed position to position the abutment surface 394a aligned with the distal baffle surface 172 of the clamping member 152. In this position, the locking member 382 prevents the clamping member 152 from being further advanced within the tool assembly 300.

[0079] Figures 21 to 26 Explanation tool component 400 ( Figure 24), which includes a sewing device 10, typically shown as an anvil 402 and a locking mechanism 480. Figure 1 An anvil and locking mechanism are alternative versions of the anvil 402. Anvil 402 is generally similar to anvil 302. Figure 16 The difference lies in that the anvil 402 includes a second through-hole 408 for receiving the biasing mechanism 484 described below. The locking mechanism 480 includes a locking member 482, the biasing mechanism 484, and a fastening member 486. In various aspects of this disclosure, the fastening member 486 includes a screw, but other fastening members are contemplated. The locking member 482 has a resilient arm 490 including a proximal portion 490a and a distal portion 490b. The proximal portion 490a defines a first hole 492, and the distal portion 490b includes an abutting member 494 having an abutting surface 494a. By inserting a screw 486 through a through-hole 406 in the side flange 444 of the anvil 402 and a hole 492 in the proximal portion 490a of the locking member 482, and tightening the screw 486 to the inner surface of the anvil 402, the proximal portion 490a of the locking member 482 is cantilevered to the inner wall of one of the side flanges 444 of the anvil 402. The arm 490 includes a reduced-thickness central portion 490c, which allows the arm 490 to remain in the locked position without deformation. Figure 24 Bend outwards to the deformation unlock position. Figure 26 ).

[0080] The biasing mechanism 484 includes a post 484a and a biasing member 484b. The post 484a extends through a second through-hole 408 in the anvil 402 and supports the biasing member 484b. In various aspects of this disclosure, the biasing member 484b includes a helical spring positioned around the post 484a and engaging with an adjacent member 494 of the locking member 482 to push the arm 490 of the locking member 482 toward a locked position.

[0081] Figure 23 and 24 The tool assembly 400 is described, wherein the anvil 402 is in the clamping position and the locking mechanism 480 is in the unlocked position. When the anvil 402 moves to the clamping position before the firing of the sewing device 10... Figure 24 When the adjacent member 494 engages the cutting member 124 of the blade 120, it deflects the adjacent member 494 against the pushing of the biasing member 484b toward the outer side of the distal baffle surface 172 of the clamping member 152. In this position, the clamping member 152 can move along the drive screw 150 from its retracted position toward its advanced position to move the actuating slider 112 and the blade 120 through the staple cartridge 106 to eject the staples 114 from the staple cartridge 106 and cut the tissue clamped between the anvil 402 and the staple cartridge 106.

[0082] Figure 25 and 26The tool assembly 400 is described, wherein the anvil 402 is in the clamping position and the locking mechanism 480 is in the locked position. In the firing sewing device 10 ( Figure 1 After that, the actuated slider 112 and the cutter 120 ( Figure 26 The clamping member 152 remains in the distal portion of the staple cartridge 106. When the clamping member 152 returns to its retracted position, the resilient arm 490 of the locking member 482, pushed by the biasing member 484b, bends inward to its undeformed position to position the abutment surface 494a aligned with the distal baffle surface 172 of the clamping member 152. In this position, the locking member 482 prevents the clamping member 152 from being further advanced within the tool assembly 400.

[0083] Figures 27 to 34 Explanation tool component 500 ( Figure 30 ), which includes a sewing device 10, typically shown as an anvil 502 and a locking mechanism 580. Figure 1 An alternative version of the anvil and locking mechanism. Figure 27 and 28 This describes the anvil 502 and the locking mechanism 580. The anvil 502 is generally similar to the anvil 102. Figure 7 The difference lies in that the anvil 502 defines the first through hole 510 and the second through hole 512 located on opposite sides of the central slot 516 of the anvil 502. Figure 28 Each of the through holes 510 and 512 is generally rectangular. In some aspects of this disclosure, the anvil 502 defines a circular groove 514 on each side of the first through hole 510.

[0084] The locking mechanism 580 includes a locking member 582, a locking plate 584, a first biasing member 586, a second biasing member 588, and a pivoting member 590. The locking plate 584 includes a body 584a, which includes a U-shaped clamp 592 extending through a first through-hole 510 of the anvil 502 and a guide member 594 extending through a second through-hole 512. The body 584a is received in a recess 596. Figure 30 The groove 596 is defined in the outer surface of the anvil 502 and is movable between the raised position and the lowered position.

[0085] The locking member 582, which can be in the form of a rod, has a first end of a U-shaped clip 592 pivotally coupled to a locking plate 584 and a second end defining an abutment member 598 having an abutment surface 598a. The locking member 582 can be in the unlocked position ( Figure 31 ) and locked position ( Figure 34The second biasing member 588 moves between the two positions. In the unlocked position, the adjacent member 598 is spaced apart from the outside of the clamping member 152. In the locked position, the adjacent member 598 is aligned with the distal baffle surface 172 of the clamping member 152 to prevent the clamping member 152 from advancing. The second biasing member 588 is received in the circular groove 514 in the anvil 502. Figure 27 The engaging pivot member 590 pushes the locking plate 584 into the groove 596 on the outer surface of the anvil 502. Figure 30 Its lowering position within ) Figure 34 In various aspects of this disclosure, the second biasing member 588 includes a helical spring. The first biasing member 586 includes a torsion spring and engages with the locking member 582 to pivot the locking member 582 about the pivoting member 590 toward its locked position.

[0086] Figures 29 to 31 The tool assembly 500 is described, wherein the anvil 502 is in the clamping position and the locking mechanism 580 is in the unlocked position. In the unlocked position, the abutment portion 598 of the locking member 582 engages with the blade 120 to prevent the locking member 582 from moving to the locked position. The engagement of the abutment portion 594 of the locking member 582 with the blade 120 also prevents the second biasing member 588 from moving the locking plate 584 of the locking mechanism to its lowered position. When the locking plate 584 is in its raised position, it notifies the clinician of the blade 120 of the staple cartridge 106 and the actuation slider 112. Figure 29 It is in its retracted position, and the bolt cartridge has not yet been fired.

[0087] Figures 32 to 34 The tool assembly 500 is described, wherein the anvil 502 is in the clamping position and the locking mechanism 580 is in the locked position. In the firing sewing device 10 ( Figure 1 After that, the actuated slider 112 and the cutter 120 ( Figure 29 The clamping member 152 is retained in the distal portion of the staple cartridge 106. Therefore, when the clamping member 152 retracts to the proximal position of the abutment member 598 of the locking member 582, the locking member 582 is pushed into its locked position, in which the abutment surface 598a of the abutment member 598 is aligned with and positioned distally against the distal baffle surface 172 of the clamping member 152 to prevent distal movement of the clamping member 152 within the tool assembly 500. The biasing member 588 also causes the locking plate 584 to remain in... Figure 32 The arrow "A" in the diagram is moved downwards to the lowered position to indicate to the clinician that the actuator slider 112 and the knife 120 ( Figure 29 The staple cartridge 506 was not positioned in the proximal portion, and the suture device 10 ( Figure 1 Not ready to fire.

[0088] As described above, each of the disclosed locking mechanisms is supported on the anvil of the tool assembly of the suture device. By positioning the locking mechanism on the anvil, the locking mechanism remains in the locked position until the tool assembly moves to the clamping position, rather than when the staple cartridge is inserted into the staple cartridge assembly of the suture device.

[0089] Those skilled in the art will understand that the apparatuses and methods specifically described herein and illustrated in the accompanying drawings are non-limiting exemplary embodiments. It is contemplated that elements and features illustrated or described in connection with one exemplary embodiment may be combined with elements and features of another exemplary embodiment without departing from the scope of this disclosure. Similarly, those skilled in the art will understand other features and advantages of this disclosure based on the foregoing embodiments. Therefore, this disclosure is not limited to what has been specifically shown and described, except as indicated by the appended claims.

Claims

1. A surgical suturing device comprising: A slender body, having a proximal portion and a distal portion; A tool assembly supported on the distal portion of the elongated body, the tool assembly comprising: A staple cartridge assembly includes a channel component and a staple cartridge, the staple cartridge being detachably housed within the channel component and including a cartridge body, staples, and an actuation slider assembly, the actuation slider assembly including an actuation slider and a blade supported on the actuation slider, the actuation slider assembly being movable through the cartridge body between a retracted position and an advanced position; An anvil, coupled to the staple cartridge assembly, allows the tool assembly to move between an open position and a clamping position, the anvil comprising an anvil body; as well as A locking mechanism supported on the anvil, the locking mechanism including a locking member that is movable between a locked position and an unlocked position in response to movement of the tool assembly from the open position to the clamping position; as well as A drive assembly includes a clamping member movable relative to the tool assembly between a retracted position and an advanced position, wherein a locking member is positioned to prevent the clamping member from moving from the retracted position to the advanced position in the locked position. The locking mechanism includes a locking plate, and the anvil body defines a first through hole and a second through hole. The locking plate includes a U-shaped clip and a guide member. The U-shaped clip extends through the first through hole and is pivotally coupled to the locking member. The guide member extends through the second through hole. The locking member is pivotable between the locked position and the unlocked position.

2. The surgical suturing device of claim 1, wherein the locking member is biased to the locking position.

3. The surgical suturing device of claim 2, wherein when the actuated slider assembly is in its retracted position, the locking member engages the actuated slider assembly to hold the locking member in the unlocked position.

4. The surgical suturing apparatus of claim 1, wherein the locking mechanism comprises a pivoting member that pivotally secures the locking member to the anvil body.

5. The surgical suturing apparatus of claim 4, wherein the locking mechanism includes a biasing member for pushing the locking member toward the locking position.

6. The surgical suturing device of claim 5, wherein the biasing component comprises a torsion spring.

7. The surgical suturing apparatus of claim 5, wherein the locking mechanism comprises a pin extending through the anvil body and engaging the locking member to prevent the locking member from moving outward.

8. The surgical suturing device of claim 1, wherein the locking member is cantilevered to the anvil body and includes a resilient arm that is deformable to move the locking member from the locked position to the unlocked position.

9. The surgical suturing apparatus of claim 8, wherein the locking mechanism comprises a biasing mechanism supported on the anvil body and positioned to push the arm of the locking member toward the locking position.

10. The surgical suturing device of claim 9, wherein the biasing mechanism comprises a post and a helical spring positioned around the post, the helical spring engaging with the arm of the locking member to push the locking member toward the locking position.

11. The surgical suturing apparatus of claim 1, wherein the anvil body includes an outer surface defining a groove, and the locking plate is received within the groove and movable between a raised position and a lowered position, the raised position corresponding to the locked position of the locking member, and the lowered position corresponding to the unlocked position of the locking plate.

12. The surgical suturing apparatus of claim 11, wherein the locking mechanism includes a first biasing member positioned to push the locking plate toward the lowered position.

13. The surgical suturing apparatus of claim 12, wherein the locking mechanism includes a second biasing member positioned to push the locking member toward the locking position.

14. An anvil assembly comprising: An anvil, comprising an anvil body having a nail-forming surface defining a nail-forming recess and a central slot, the nail-forming recess being positioned on opposite sides of the central slot; as well as A locking mechanism, supported on the anvil body, includes a locking component movable between a locked position and an unlocked position. The locking mechanism includes a locking plate, and the anvil body defines a first through hole and a second through hole. The locking plate includes a U-shaped clip and a guide member. The U-shaped clip extends through the first through hole and is pivotally coupled to the locking member. The guide member extends through the second through hole. The locking member is pivotable between the locked position and the unlocked position.

15. The anvil assembly of claim 14, wherein the locking member is pushed toward the locking position.

16. The anvil assembly of claim 15, wherein the locking mechanism includes a pivoting member that pivotally secures the locking member to the anvil body.

17. The anvil assembly of claim 15, wherein the locking member is cantilevered to the anvil body and includes a resilient arm that is deformable to move the locking member from the locked position to the unlocked position.

18. The anvil assembly of claim 14, wherein the anvil body includes an outer surface defining a recess, and the locking plate is received within the recess and movable between a raised position and a lowered position, the raised position corresponding to the locked position of the locking member, and the lowered position corresponding to the unlocked position of the locking plate.

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