A cartridge holder for surgical staples having ridges on the peripheral wall for clamping tissue

Abstract

A surgical stapling device (10) is disclosed, comprising a tool assembly (16) having an anvil assembly (24) and a cartridge assembly (26). The cartridge assembly (26) comprises ridges (46) or protrusions (46) formed along the peripheral wall of the cartridge assembly (26) to clamp and stabilize tissue clamped between the anvil and cartridge assemblies (24, 26). The ridges (46) act as a clamp to prevent the tissue from moving in the transverse and longitudinal directions during staple formation. By stabilizing the tissue during staple formation, staple formation can be improved.

Description

Technical Field

[0001] The present disclosure relates to surgical instruments for stapling tissue, and more particularly, to a surgical stapling device for stapling tissue, including a structure for grasping tissue. Background Art

[0002] Typically, a stapling instrument comprises a pair of opposing jaw members, wherein one jaw member supports a staple cartridge and the other jaw member supports an anvil having staple forming pockets. Some stapling instruments also comprise an I-beam containing a blade that advances between the two jaw members to simultaneously eject staples from the staple cartridge and cut the tissue sandwiched between the jaw members. When a staple is fired into tissue, particularly thick tissue, the tissue is severely compressed between the two jaw members and tends to slip between the jaw members, causing the staples to deform. Summary of the Invention

[0003] One aspect of the present disclosure relates to a surgical stapling device comprising an elongated body and a tool assembly. The elongated body has a proximal portion and a distal portion. The tool assembly defines a longitudinal axis and is supported on the distal portion of the elongated body. The tool assembly comprises an anvil assembly and a cartridge assembly. The anvil assembly has a distal portion and a tissue-engaging surface. The cartridge assembly has a distal portion and comprises a cartridge channel and a staple cartridge. The staple cartridge has a distal portion and a tissue-contacting surface. The cartridge assembly is coupled to the anvil assembly such that the tool assembly is movable between an open position in which the anvil and the distal portion of the cartridge assembly are spaced apart from each other and a clamped position in which the anvil assembly and the tissue-contacting surfaces of the staple cartridge are juxtaposed and aligned. The cartridge channel comprises a bottom wall and spaced-apart sidewalls defining an elongated recess for receiving the staple cartridge. Each of the spaced-apart sidewalls supports a plurality of ridges spaced apart outboard of the tissue-engaging surface of the staple cartridge. Each of the plurality of ridges comprises a tissue-engaging portion extending above the tissue-engaging surface of the staple cartridge in a direction toward the anvil assembly.

[0004] In aspects of the present disclosure, the tissue engaging portion of each of the plurality of ridges has an atraumatic shape.

[0005] In some aspects of the present disclosure, the joining portion of each of the plurality of ridges has a trapezoidal shape.

[0006] In certain aspects of the present disclosure, the engagement portion of each of the plurality of ridges has a rectangular shape.

[0007] In aspects of the present disclosure, the engagement portion of each of the plurality of ridges has a circular shape.

[0008] In some aspects of the present disclosure, the engagement portion of each of the plurality of ridges extends a distance X above the tissue engaging surface of the staple cartridge in a direction toward the anvil assembly, where X is approximately 1.5 mm to approximately 2.5 mm.

[0009] In certain aspects of the present disclosure, X is about 2 mm.

[0010] In some aspects of the disclosure, each ridge in the plurality of ridges is spaced apart from an adjacent ridge in the plurality of ridges by a distance Y, where Y is from about 3 mm to about 6 mm.

[0011] In some aspects of the present disclosure, Y is approximately 4.5 mm.

[0012] In certain aspects of the present disclosure, the plurality of ridges are formed into groups of ridges spaced apart along the bin channel, including a first group and a second group, wherein each group of ridges includes at least two ridges of the plurality of ridges.

[0013] In aspects of the present disclosure, each ridge of the plurality of ridges in each set of ridges is spaced apart from an adjacent ridge in the corresponding set of ridges by a distance Y, wherein Y is from about 3 mm to about 6 mm.

[0014] In some aspects of the present disclosure, X is about 2 mm.

[0015] In certain aspects of the present disclosure, a stapling device includes a handle assembly coupled to a proximal portion of an elongated body.

[0016] Other aspects of the present disclosure relate to a tool assembly defining a longitudinal axis. The tool assembly includes an anvil assembly and a cartridge assembly. The anvil assembly has a distal portion and a tissue engaging surface. The cartridge assembly has a distal portion and includes a cartridge channel and a staple cartridge. The staple cartridge has a distal portion and a tissue contacting surface. The cartridge assembly is coupled to the anvil assembly such that the tool assembly can move between an open position in which the anvil and the distal portion of the cartridge assembly are spaced apart from each other and a clamped position in which the anvil assembly and the tissue contacting surfaces of the staple cartridge are juxtaposed and aligned. The cartridge channel includes a bottom wall and spaced-apart side walls defining an elongated recess for receiving the staple cartridge. Each of the spaced-apart side walls supports a plurality of ridges spaced apart on an outer side of the tissue engaging surface of the staple cartridge. Each of the plurality of ridges includes a tissue engaging portion extending above the tissue engaging surface of the staple cartridge in a direction toward the anvil assembly.

[0017] Other features of the present disclosure will be understood from the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Various aspects of the disclosed surgical stapling device are described herein below with reference to the accompanying drawings, in which:

[0019] Figure 1 is a side perspective view of a surgical stapling device incorporating aspects of the present disclosure;

[0020] Figure 2 yes Figure 1an enlarged view of a designated area of ​​detail shown in , showing a tool assembly of a surgical stapling device;

[0021] Figure 3 yes Figure 2 an enlarged view of a designated area of ​​detail shown in , showing ridges on a cartridge channel of a tool assembly;

[0022] Figure 3A yes Figure 3 An enlarged view of an alternative form of ridges on a bin channel is shown in FIG;

[0023] Figure 3B yes Figure 3 An enlarged view of another alternative form of ridges on the bin channel shown in FIG;

[0024] Figure 3C yes Figure 3 An enlarged view of yet another alternative form of ridges on a bin channel is shown in FIG;

[0025] Figure 4 yes Figure 1 A side perspective view of a cartridge channel of a surgical stapling device shown in FIG.

[0026] Figure 5 It is from Figure 4 A view looking from the far end of the bunker passage shown in FIG;

[0027] Figure 6 yes Figure 1 A side perspective view of a tool assembly of the surgical stapling device shown in ; and

[0028] Figure 7 It is along Figure 6 A cross-sectional view taken along section line 7-7. DETAILED DESCRIPTION

[0029] The disclosed surgical stapling device will now be described in detail with reference to the accompanying drawings, in which the same reference numerals refer to the same or corresponding elements in each of the several views. However, it should be understood that the aspects of the present disclosure described herein are merely examples of the present disclosure and can be implemented in various forms. In order to avoid unnecessary details that obscure the present disclosure, well-known functions or structures are not described in detail. Therefore, the specific structural and functional details disclosed herein should not be interpreted as limiting, but should only be interpreted as the basis for the claims and as a representative basis for teaching those skilled in the art to use the present disclosure in different ways with virtually any appropriate detailed structure.

[0030] In this description, the term "proximal" is generally used to refer to the portion of the device that is closer to the clinician, while the term "distal" is generally used to refer to the portion of the device that is farther from the clinician. In addition, the term "endoscopic" is generally used to refer to endoscopy, laparoscopy, arthroscopy, and / or any other procedure performed through a small diameter incision or cannula. In addition, the term "clinician" is generally used to refer to medical staff, including doctors, nurses, and support staff.

[0031] A surgical instrument is disclosed, comprising a tool assembly having an anvil assembly and a cartridge assembly, the anvil assembly and the cartridge assembly being movable relative to each other from an open position to a clamped position for clamping and stapling tissue. The tool assembly includes ridges or protrusions formed along a peripheral wall of the tool assembly to clamp and stabilize tissue clamped between the anvil and the cartridge. In various aspects of the present disclosure, ridges are formed along the peripheral wall of the cartridge assembly and serve as clamps to prevent tissue from moving in the transverse and longitudinal directions during staple formation. By stabilizing the tissue during staple formation, staple formation can be improved.

[0032] Figure 1 1 is a perspective view of a surgical stapling device, generally shown as stapling device 10, incorporating aspects of the present disclosure. Stapling device 10 includes a handle assembly 12, an elongated body 14, and a tool assembly 16. Elongated body 14 defines a longitudinal axis "X" and includes a proximal portion 14a supported on handle assembly 12 and a distal portion 14b that supports tool assembly 16. In some aspects of the present disclosure, tool assembly 16 forms part of a reloading assembly 18, which includes a proximal body portion 18a that is adapted to releasably couple to distal portion 14b of elongated body 14 of stapling device 10. Proximal body portion 18a of reloading assembly 18 includes a distal portion that supports tool assembly 16. In alternative aspects of the present disclosure, tool assembly 16 is securely secured to the distal portion of elongated body 14.

[0033] The handle assembly 12 of the stapling device 10 includes a body 20 defining a fixed handle 20a, an actuation button 22, and a rotation knob 23. The actuation button 22 can be pressed to actuate a tool assembly 16, such as a proximity tool assembly 16, an articulation tool assembly 16, a firing nail, etc. The rotation knob 23 is rotatably supported on the body 20 of the handle assembly 12 and supports the elongated body 14 of the stapling device 10, so that rotation of the rotation knob 23 causes the elongated body 14 and the tool assembly 16 to rotate relative to the handle assembly 12. In various aspects of the present disclosure, a battery (not shown) is supported in the fixed handle 20a to power the handle assembly 12. It is contemplated that the stapling device 10 does not need to be powered, but may also include a manual handle assembly, such as described in U.S. Patent No. 5,865,361 ("the '361 patent").

[0034] The tool assembly 16 includes an anvil assembly 24 and a cartridge assembly 26, which are coupled together so that the tool assembly 16 can be in the open position ( Figure 1 ) and clamping position ( Figure 6 ) between. The anvil assembly 24 includes a tissue engaging surface 24a ( Figure 7 ). Cartridge assembly 26 includes a staple cartridge 28 and a cartridge channel 30. The staple cartridge 28 includes a tissue engaging surface 48. In the open position, the distal portion of the anvil assembly 24 is spaced apart from the distal portion of the staple cartridge 28 to facilitate passage of tissue between the anvil assembly 24 and the cartridge assembly 26. In the clamped position, the tissue engaging surface 24a of the anvil assembly 24 is aligned juxtaposed with the tissue engaging surface 48 of the staple cartridge 28. The cartridge channel 30 defines an elongated recess 32 ( Figure 4 ), the recess receiving and accommodating the staple cartridge 28. In various aspects of the present disclosure, the staple cartridge 28 can be removed from the cartridge channel 30 and replaced to facilitate reuse of the stapling device 10. Alternatively, the staple cartridge 28 can be fixedly retained within the cartridge channel 30, and the reloading assembly 18 can be replaced to facilitate reuse of the stapling device 10.

[0035] Figures 2 to 5 The cartridge channel 30 of the stapling device 10 is shown. The cartridge channel 30 includes a bottom wall 40 and spaced-apart side walls 42 defining an elongated groove 32. Each spaced-apart side wall 42 extends along an axis parallel to the longitudinal axis of the tool assembly 16 and includes an upper shoulder 44 that supports the staple cartridge 28. The side walls 42 of the cartridge channel 30 also support ridges or protrusions 46 spaced apart along the length of the side walls 42. Each ridge 40 extends above the tissue contacting surface 48 of the staple cartridge 28 and is positioned radially outward. In various aspects of the present disclosure, the ridges 46 include an upper or tissue engaging portion 50 that includes an atraumatic configuration to minimize damage to the tissue. The engaging portion 50 can have a variety of shapes, including a trapezoidal shape 50 ( Figure 3 ), rectangular shapes 50b and 50c ( Figure 3A and 3B ) and a circular shape 50d. Alternatively, other shapes can be envisioned.

[0036] The height and spacing of the ridges 46 are sufficient to adequately clamp the tissue without causing damage to the tissue. In various aspects of the present disclosure, the ridges 46 have a height of about 1.5 mm to about 2.5 mm above the tissue contact surface 48 of the staple cartridge 28, and in some aspects of the present disclosure, have a height of about 2 mm. In some aspects of the present disclosure, the ridges 40 are spaced apart from each other along the sidewalls 42 by about 3 mm to about 6 mm, and in some aspects of the present disclosure, are spaced apart from each other by about 4.5 mm. Other spacings are contemplated. In certain aspects of the present disclosure, the ridges 46 comprise groups of ridges 46 positioned along the sidewalls 42 of the cartridge channel 30, wherein each ridge 46 in each group of ridges 46 is spaced apart from the other ridges 46 in the corresponding group described above, and the groups are spaced apart from the other groups by a larger distance. For example, the cartridge channel 30 may comprise two or more groups of ridges, such as three groups of ridges, comprising a proximal group 60a, an intermediate group 60b, and a distal group 60c ( Figure 4 ).

[0037] Figure 6 and 7 The tool assembly 16 is shown in a clamped position, wherein the tissue "T" is clamped between the tissue contact surface 24a of the anvil assembly 24 and the tissue contact surface 48 of the staple cartridge 28 of the cartridge assembly 26. In the clamped position, the engagement portion ridge 46 is spaced outward from the tissue contact surfaces 24a and 28 of the anvil assembly 24 and staple cartridge 28 and engages the tissue "T". In the clamped position, the engagement portion 50 of the ridge 46 is spaced outward from the anvil assembly 24 and is not opposed to any portion of the tool assembly 16. Therefore, the tissue is not compressed between the opposing surfaces of the tool assembly 16. This minimizes damage to the tissue "T". The engagement of the tissue "T" with the ridge 46 stabilizes the tissue "T" within the tool assembly 16 and limits movement of the tissue in the lateral and longitudinal directions during staple formation to improve staple formation during firing of the stapling device 10.

[0038] Although the present disclosure describes ridge 46 as being formed on cartridge channel 30 of tool assembly 16, it is contemplated that ridge 46 may be formed on anvil assembly 24 outside of tissue contacting surface 24a of anvil assembly 24. It is also contemplated that ridge 46 may be integrally formed with cartridge channel 30, staple cartridge 28, or anvil assembly 24. It is also contemplated that ridge 46 may be formed separately from and secured to one of cartridge channel 30, staple cartridge 28, or anvil assembly 24.

[0039] Those skilled in the art will understand that the devices and methods specifically described herein and illustrated in the accompanying drawings are non-limiting exemplary aspects of the present disclosure. It is contemplated that the elements and features illustrated or described in conjunction with one exemplary embodiment may be combined with the elements and features of another exemplary embodiment without departing from the scope of the present disclosure. In addition, those skilled in the art will understand the additional features and advantages of the present disclosure based on the above-mentioned aspects of the present disclosure. Therefore, the present disclosure is not limited by what has been specifically shown and described, except as indicated by the appended claims.

Claims

1. A surgical stapling device comprising: an elongated body having a proximal portion and a distal portion; a tool assembly supported on the distal portion of the elongated body and defining a longitudinal axis, the tool assembly including an anvil assembly and a cartridge assembly, the anvil assembly having a distal portion and a tissue engaging surface, the cartridge assembly having a distal portion and including a cartridge channel and a staple cartridge having a distal portion and a tissue contacting surface, the cartridge assembly coupled to the anvil assembly such that the tool assembly is movable between an open position in which the distal portion of the anvil assembly and the distal portion of the cartridge assembly are spaced apart from each other and a clamped position in which the tissue engaging surface of the anvil assembly and the tissue contacting surface of the staple cartridge are in juxtaposed alignment; The magazine channel includes a bottom wall and spaced-apart side walls defining an elongated groove, wherein the elongated groove receives the staple magazine, wherein each of the spaced-apart side walls supports a plurality of ridges, each of the plurality of ridges being spaced outside the tissue contact surface of the staple magazine and including a tissue engaging portion extending above the entire tissue contact surface of the staple magazine in a direction toward the anvil assembly.

2. The surgical stapling device according to claim 1, wherein: The tissue engaging portion of each of the plurality of ridges has an atraumatic shape.

3. The surgical stapling device according to claim 2, wherein: The tissue engaging portion of each of the plurality of ridges has a trapezoidal shape.

4. The surgical stapling device according to claim 2, wherein: The tissue engaging portion of each of the plurality of ridges has a rectangular shape.

5. The surgical stapling device according to claim 2, wherein: The tissue engaging portion of each of the plurality of ridges has a circular shape.

6. The surgical stapling device according to claim 1, wherein: The tissue engaging portion of each of the plurality of ridges extends a distance X above the tissue contacting surface of the staple cartridge in a direction toward the anvil assembly, wherein X is approximately 1.5 mm to approximately 2.5 mm.

7. The surgical stapling device according to claim 6, wherein: X is about 2 mm.

8. The surgical stapling device according to claim 1, wherein: Each ridge in the plurality of ridges is spaced apart from an adjacent ridge in the plurality of ridges by a distance Y, wherein Y is from about 3 mm to about 6 mm.

9. The surgical stapling device according to claim 8, wherein: Y is about 4.5 mm.

10. The surgical stapling device according to claim 1, wherein: The plurality of ridges are formed into groups of ridges spaced apart along the bin channel, including a first group and a second group, wherein each group of ridges includes at least two ridges of the plurality of ridges.

11. The surgical stapling device according to claim 10, wherein: Each ridge of the plurality of ridges in each set of ridges is spaced apart a distance Y from an adjacent ridge in the corresponding set of ridges, where Y is from about 3 mm to about 6 mm.

12. The surgical stapling apparatus of claim 1, further comprising a handle assembly to which the proximal portion of the elongated body is coupled.

13. A tool assembly comprising: an anvil assembly having a distal portion and a tissue engaging surface; A magazine assembly having a distal portion and including a magazine channel and a nail magazine, the nail magazine having a distal portion and a tissue contact surface, the magazine assembly being connected to the anvil assembly so that the tool assembly can move between an open position in which the distal portion of the anvil assembly and the distal portion of the magazine assembly are spaced apart from each other and a clamping position in which the tissue engaging surface of the anvil assembly and the tissue contact surface of the nail magazine are juxtaposed and aligned, the magazine channel including a bottom wall and spaced-apart side walls defining a slender groove, the elongated groove receiving the nail magazine, wherein each of the spaced-apart side walls of the magazine channel supports a plurality of ridges, each of the plurality of ridges being spaced outside the tissue contact surface of the nail magazine and including a tissue engaging portion, the tissue engaging portion extending above the entire tissue contact surface of the nail magazine in a direction toward the anvil assembly.

14. The tool assembly of claim 13, wherein: The tissue engaging portion of each of the plurality of ridges has an atraumatic shape.

15. The tool assembly of claim 14, wherein: The atraumatic shape is selected from a trapezoidal shape, a rectangular shape, and a circular shape.

16. The tool assembly of claim 13, wherein: The tissue engaging portion of each of the plurality of ridges extends a distance X above the tissue contacting surface of the staple cartridge in a direction toward the anvil assembly, wherein X is approximately 1.5 mm to approximately 2.5 mm.

17. The tool assembly of claim 13, wherein: Each ridge in the plurality of ridges is spaced apart from an adjacent ridge in the plurality of ridges by a distance Y, wherein Y is from about 3 mm to about 6 mm.

18. The tool assembly of claim 13, wherein: The plurality of ridges are formed into groups of ridges spaced apart along the bin channel, including a first group and a second group, wherein each group of ridges includes at least two ridges of the plurality of ridges.

19. The tool assembly of claim 18, wherein: Each ridge of the plurality of ridges in each set of ridges is spaced apart a distance Y from an adjacent ridge in the corresponding set of ridges, where Y is from about 3 mm to about 6 mm.

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