Nail bin assembly and surgical anastomat

Abstract

The utility model provides a nail bin assembly and a surgical anastomat, the nail bin assembly comprises a nail bin body, a plurality of rows of nail holes are formed, each nail hole comprises a first side wall and a second side wall which are arranged in the transverse direction and extend in the axial direction, the nail bin body comprises a plurality of first limiting parts which are located on the outermost side of the nail bin body and limit the nail holes, and a plurality of second limiting parts which are located on the outermost side of the nail bin body; the first limiting parts are sequentially arranged in the axial direction, and a plurality of matching grooves are formed among the first limiting parts; the side wall of the nail bin frame comprises a plurality of first wall thickness parts and a plurality of second wall thickness parts, the first wall thickness parts are transversely opposite to the first limiting parts, the wall thickness of the second wall thickness parts is larger than that of the first wall thickness parts, the second wall thickness parts are transversely opposite to the matching grooves, and the first side wall of at least one outermost nail hole is composed of the second wall thickness parts. Structures of the staple cartridge body and the staple cartridge frame are improved, so that the overall structural strength of the staple cartridge assembly is improved. Meanwhile, one part of the nail bin frame serves as the first side wall of the nail hole, so that when the nail bin assembly contains multiple rows of anastomosis nails, the diameter of the anastomat is smaller, and clinical treatment is better facilitated.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to a staple cartridge assembly and a surgical stapler. Background Art

[0002] A surgical stapler generally includes a stapler body and a stapler assembly and anvil disposed at the distal end of the stapler body. When the stapler is fired, the firing assembly in the stapler body moves toward the distal end, and the firing assembly can drive the stapler assembly and the anvil to suture and cut the tissue. As disclosed in the existing patent US11457920B, the stapler assembly includes a stapler frame and a stapler body located inside the stapler frame, and the stapler frame includes two side walls and a bottom wall connected between the two side walls. The existing stapler body is a closed structure as a whole, in which a plurality of staple holes for accommodating staples are defined. The stapler frame is generally a metal part, and the two side walls are in the shape of metal sheets with smooth surfaces. The structure of the existing stapler frame results in the structural strength of the stapler frame being not high enough, especially when applied to a small-caliber stapler, the structural strength of the reduced-size stapler frame is more restricted, resulting in the structural strength of the overall stapler assembly being difficult to meet the requirements. Utility Model Content

[0003] In view of the problems in the prior art, the purpose of the present application is to provide a stapler assembly and a surgical stapler, and to improve the structure of the stapler body and the stapler frame, which is conducive to improving the overall structural strength of the stapler assembly.

[0004] The embodiment of the present application provides a stapler assembly for a surgical stapler, the stapler assembly comprising: a stapler body, provided with a plurality of rows of staple holes, the staple holes comprising a first side wall and a second side wall arranged in a transverse direction and extending in an axial direction, the first side wall being located on the outside of the second side wall, the stapler body comprising a plurality of limiting portions defining the staple holes, the limiting portions comprising a plurality of first limiting portions located on the outermost sides of the stapler body, the first limiting portions being arranged in sequence in the axial direction, and a plurality of matching grooves being formed between the first limiting portions; a stapler rack for accommodating the stapler body, the side walls of the stapler rack comprising a plurality of first wall thickness portions and a plurality of second wall thickness portions, the wall thickness of the second wall thickness portions being greater than the wall thickness of the first wall thickness portions, the first wall thickness portions being laterally opposite to the first limiting portions, the second wall thickness portions being laterally opposite to the matching grooves, and the first side wall of at least one outermost staple hole being constituted by the second wall thickness portion.

[0005] In some embodiments, the first limiting portion and the matching groove are staggered along the axial direction, and the first thick wall portion and the second thick wall portion are staggered along the axial direction.

[0006] In some embodiments, arc-shaped grooves are respectively provided at the axial ends of each of the first limiting portions, the nail hole is defined between the arc-shaped grooves between two adjacent first limiting portions, and the second wall thickness portion is located laterally outside the arc-shaped groove. When a staple is provided in the staple hole, a lateral gap is provided between the second wall thickness portion and the staple.

[0007] In some embodiments, there is a smooth transition between the first thick wall portion and the adjacent second thick wall portion.

[0008] In some embodiments, the outer wall of the first limiting portion is an arc surface protruding outward, and the inner wall of the first thick wall portion is an arc surface recessed outward and adapted to the outer wall of the first limiting portion.

[0009] In some embodiments, the limiting portion further includes at least one row of second limiting portions located inside the first limiting portion, and each row of second limiting portions is arranged at intervals along the axial direction.

[0010] In some embodiments, the nail magazine body includes a nail magazine panel, and the limiting portion is disposed on a bottom surface of the nail magazine panel.

[0011] In some embodiments, the mating slot includes a first portion opened in the staple cartridge panel and a second portion located at the bottom of the staple cartridge panel;

[0012] The second thick wall portion is located in the first part and the second part of the matching groove, or a matching part is provided at the top end of the second thick wall portion, the matching part is located in the first part of the matching groove, and the second thick wall portion is located in the second part of the matching groove.

[0013] In some embodiments, the top end of the second wall thickness portion or the top end of the matching portion is flush with the top surface of the nail magazine panel.

[0014] In some embodiments, the first portion of the mating slot is connected to the outer side edge of the staple cartridge panel.

[0015] In some embodiments, the height of the highest point of the side wall of the nail magazine rack is lower than or equal to the height of the lowest point of the nail magazine panel, and the nail magazine panel at least partially covers the end surface of the side wall of the nail magazine rack.

[0016] In some embodiments, an outer wall of the first limiting portion is retracted inwardly relative to an outer wall of the nail magazine panel.

[0017] The embodiment of the present application also provides a surgical stapler, including the staple magazine assembly.

[0018] The stapler assembly and surgical stapler provided by the present application have the following advantages:

[0019] The present application improves the structure of the staple cartridge body, omits the structure that does not need to define the position of the staples, forms a spaced-off structure with a matching groove on the outside of the staple cartridge body, and correspondingly improves the structure of the staple cartridge frame, adds a second thick wall portion with a thicker wall thickness, and positions the second thick wall portion opposite to the matching groove, so that the side wall strength of the staple cartridge frame is higher, and the matching between the staple cartridge frame and the staple cartridge body is more stable, which is beneficial to improving the overall structural strength and stability of the staple cartridge assembly. At the same time, a part of the staple cartridge frame is used as the first side wall of the staple hole, so that when the staple cartridge assembly accommodates multiple rows of staples, the diameter of the stapler is smaller, which is more beneficial to clinical use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings.

[0021] Figure 1 is a structural schematic diagram of a nail magazine assembly according to a first embodiment of the present application;

[0022] Figure 2 is an exploded view of a nail cartridge assembly according to the first embodiment of the present application;

[0023] Figure 3 is a structural schematic diagram of a nail magazine body of the first embodiment of the present application;

[0024] Figure 4 is a side view of a staple cartridge assembly according to a first embodiment of the present application;

[0025] Figure 5 yes Figure 4 Sectional view in the AA direction;

[0026] Figure 6 is a structural schematic diagram of a nail magazine assembly according to a second embodiment of the present application;

[0027] Figure 7 is an exploded view of a nail cartridge assembly according to a second embodiment of the present application;

[0028] Figure 8 is a structural schematic diagram of a nail magazine assembly according to a third embodiment of the present application;

[0029] Fig. 9 is an exploded view of a nail cartridge assembly according to a third embodiment of the present application;

[0030] Fig.10 yes Figure 8 Enlarged view of point B in .

[0031] Reference numerals:

[0032] 1 Nail magazine rack 21 nail holes

[0033] 11 First wall thickness portion 23 Matching groove

[0034] 22 first limiting portion 231 first part

[0035] 12 Second wall thickness portion 232 Second part

[0036] 13 mating part 24 nail magazine panel

[0037] 2 Nail cartridge body 25 Second limiting portion DETAILED DESCRIPTION

[0038] The example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in a variety of forms and should not be construed as being limited to the embodiments set forth herein; on the contrary, these embodiments are provided so that the present application will be comprehensive and complete, and the concept of the example embodiments will be fully conveyed to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their repeated descriptions will be omitted. "Or" and "or" in the specification may both mean "and" or "or". Although the terms "upper", "lower", "between", etc. may be used in this specification to describe different exemplary features and elements of the present application, these terms are used herein only for convenience, such as according to the directions of the examples described in the accompanying drawings. Nothing in this specification should be construed as requiring a specific three-dimensional direction of the structure to fall within the scope of the present application. Although "first" or "second" etc. are used in this specification to represent certain features, they are only used to represent the function, and are not used as a limitation on the number and importance of specific features.

[0039] The present application provides a stapler assembly and a surgical stapler. The surgical stapler includes a stapler body and a stapler assembly and a staple anvil disposed at the distal end of the stapler body. The stapler assembly includes a stapler body for accommodating staples and a stapler frame disposed outside the stapler body. The stapler body is provided with a plurality of rows of staple holes, the staple holes including a first side wall and a second side wall arranged in a transverse direction and extending in an axial direction, the first side wall being located on the outside of the second side wall, the stapler body including a plurality of limiting portions defining the staple holes, the limiting portions including a plurality of first limiting portions located on the outermost sides of the stapler body, the first limiting portions being arranged in sequence in the axial direction, and a plurality of matching grooves being formed between the first limiting portions. Therefore, the present application improves the structure of the stapler body, omitting the structure of the portion that does not need to define the position of the staples, and forming a spacer disconnection structure with matching grooves on the outside of the stapler body. The nail magazine rack is used to accommodate the nail magazine body. The side wall of the nail magazine rack includes a plurality of first wall thickness portions and a plurality of second wall thickness portions. The wall thickness of the second wall thickness portion is greater than that of the first wall thickness portion. The first wall thickness portion is laterally opposite to the first limiting portion, and the second wall thickness portion is laterally opposite to the matching groove. The first side wall of at least one outermost nail hole is formed by the second wall thickness portion. The present application makes corresponding improvements to the structure of the nail magazine rack, adding a second wall thickness portion with a larger wall thickness, so that the second wall thickness portion is laterally opposite to the matching groove position, so that the side wall strength of the nail magazine rack is higher, and the second wall thickness portion and the nail magazine body jointly define the outer nail hole, so that the cooperation between the nail magazine rack and the nail magazine body is more stable, which is conducive to improving the overall structural strength and stability of the nail magazine assembly. At the same time, using a part of the nail magazine rack as the first side wall of the nail hole makes the diameter of the stapler smaller when the nail magazine assembly accommodates multiple rows of staples, which is more conducive to clinical use.

[0040] The structure of the stapler assembly in a specific embodiment is described below in conjunction with the accompanying drawings. It should be understood that the accompanying drawings and the following description are only examples and are not intended to limit the scope of protection of the present application. In the present application, the distal end and the proximal end are relative to the operator. The distal end is farther from the operator, that is, closer to the surgical site, and the proximal end is closer to the operator, that is, farther from the surgical site. The axial direction refers to the direction from the distal end to the proximal end or from the proximal end to the distal end of the stapler, the transverse direction refers to the width direction of the stapler, and the longitudinal direction is the height direction. As shown in Figure 1 In the perspective of S1, the direction S1 or the direction opposite to S1 is the axial direction, and the direction S2 or the direction opposite to S2 is the lateral direction. Figure 4 The up-down direction in the viewing angle is the height direction. The outside and the inside are relative to the axis S0 of the nail magazine assembly, the side close to the axis S0 of the nail magazine assembly is the inside, and the side away from the axis S0 of the nail magazine assembly is the outside.

[0041] With the general trend of minimally invasive surgery in clinical practice, reducing the diameter of the stapler is a continuous demand. Since the staple cartridge assembly is composed of a staple cartridge body and a staple cartridge frame. The strength of the staple cartridge assembly is the most important factor in ensuring the effect of staple molding. If the diameter of the staple cartridge assembly is reduced by simply reducing the wall thickness of the nail hole, the nail molding will be poor; it will also affect the surgical effect. The staple cartridge body is generally a plastic part, and the staple cartridge frame is generally a metal part. From a process point of view, during the injection molding process of the plastic product mold, the part structure should not have too thin walls. Affected by the fluidity of the plastic particles, the injection molding will not be full, which will cause adverse effects on the molding of the staple cartridge hole. Therefore, it is not suitable to directly reduce the wall thickness of the staple cartridge body. If the wall thickness of the staple cartridge frame is simply reduced, the strength of the staple cartridge frame will be reduced, and the staple cartridge assembly will be deformed when fired. This application opens the outermost nail hole that needs to be reduced, and the nail cartridge frame provides the first side wall of the outermost nail hole to meet the injection molding process, while increasing the thickness of part of the nail cartridge frame and increasing the overall strength of the staple cartridge assembly. When the stapler cartridge assembly is reduced to 8 mm, three rows of staples can be accommodated.

[0042] like Figures 1 to 5 As shown, the first embodiment of the present application provides a nail magazine assembly. Figures 1 to 3 As shown, the stapler assembly includes a stapler body 2 and a stapler frame 1. In order to ensure the staple forming effect when the stapler is fired, it is necessary to ensure that the strength of the stapler assembly meets the requirements. The stapler body 2 includes a stapler panel 24, the upper surface of the stapler panel 24 is the stapler surface, the limiting portion is arranged on the bottom surface of the stapler panel 24, the stapler panel 24 is in the shape of a flat plate, the limiting portion is in the shape of a column extending in the longitudinal direction, and the stapler panel 24 and the limiting portion can be an integrally formed or separately formed structure. The stapler panel 24 and the limiting portion jointly define a plurality of rows of staple holes 21 for accommodating staples, and the top ends of the staple holes 21 open to the stapler surface of the stapler panel 24. Each staple hole 21 includes a first side wall and a second side wall arranged in the transverse direction and extending in the axial direction, the first side wall being located outside the second side wall, and the limiting portion at least includes a plurality of first limiting portions 22 located on the outermost side of the stapler body 2, Figure 5 In the perspective of FIG. 1 , a row of the first limiting portions 22 are formed on both lateral sides of the staple cartridge body 2. The first limiting portions 22 are arranged in sequence along the axial direction, and a plurality of matching grooves 23 are formed between the first limiting portions 22. Therefore, the present application improves the structure of the staple cartridge body 2, omitting the structure of the part that does not need to limit the position of the staples, and forming a spaced-off structure with matching grooves 23 on the outer side of the staple cartridge body 2. Figure 4 and Figure 5As shown, in this embodiment, the first limiting portions 22 and the matching grooves 23 are staggered in the axial direction, that is, one matching groove 23 is formed between every two adjacent first limiting portions 22. Therefore, even if the size of the staple cartridge assembly is reduced, there is no excessively thin side wall in the staple cartridge body 2, which will not affect the injection molding process, avoid poor molding of the staple holes 21, and the size of the staple cartridge assembly can be reduced to 8 mm on the basis of ensuring the normal function of the staple cartridge assembly.

[0043] like Figure 2 and Figure 5 As shown, the nail magazine frame 1 is used to accommodate the nail magazine body 2, and the nail magazine frame 1 includes two side walls and a bottom wall connected between the two side walls. The side walls of the nail magazine frame 1 include a plurality of first wall thickness portions 11 and a plurality of second wall thickness portions 12, the wall thickness of the second wall thickness portions 12 is greater than the wall thickness of the first wall thickness portions 11, the first wall thickness portions 11 are laterally opposite to the first limiting portions 22, the second wall thickness portions 12 are laterally opposite to the matching grooves 23, and the second wall thickness portions 12 at least partially enter the interior of the matching grooves 23, the matching grooves 23 are connected to the nail holes 21, and the first side wall of at least one of the outermost nail holes 21 is formed by the second wall thickness portions 12. The present application makes corresponding improvements to the structure of the staple cartridge frame 1, adds a second thick wall portion 12 with a larger wall thickness, makes the second thick wall portion 12 and the matching groove 23 horizontally opposite, increases the thickness of part of the side wall of the staple cartridge frame 1, and makes the side wall strength of the staple cartridge frame 1 higher. Since the staple cartridge frame 1 is generally a metal part, increasing the structural strength of the staple cartridge frame 1 has a large gain in the structural strength of the staple cartridge assembly of the small-caliber stapler, effectively improves the strength of the entire staple cartridge assembly, and avoids deformation of the staple cartridge assembly during firing. In addition, the second thick wall portion 12 of the staple cartridge frame 1 and the staple cartridge body 2 jointly define the outermost nail hole 21, and the cooperation between the staple cartridge frame 1 and the staple cartridge body 2 is more stable, which is conducive to improving the overall structural strength and stability of the staple cartridge assembly. Through the cooperation of the staple cartridge frame 1 and the staple cartridge body 2, when the staple cartridge assembly is suitable for a small-caliber stapler, the overall structural strength of the staple cartridge assembly can be improved on the basis of reducing the overall size of the staple cartridge assembly. At the same time, a portion of the stapler frame 1 is used as the first side wall of the outermost staple hole 21, so that when the stapler assembly accommodates multiple rows of staples, the diameter of the stapler is smaller, which is more convenient for clinical use. Figure 1 For example, the size of the stapler assembly can be smaller on the basis of providing three rows of staples on each side of the stapler assembly. Even when the size of the stapler stapler assembly is reduced to 8 mm, three rows of staples can still be accommodated. Therefore, this structure makes the diameter of the stapler smaller, which is more beneficial to clinical practice. Figure 5 As shown, corresponding to the first limiting portions 22 and the matching grooves 23 being staggered along the axial direction, the first thick wall portions 11 and the second thick wall portions 12 are staggered along the axial direction.

[0044] like Figure 3 As shown, the limiting portion further includes at least one row of second limiting portions 25 located inside the first limiting portion 22, and each row of the second limiting portions 25 is arranged at intervals along the axial direction. The multiple rows of limiting portions are arranged in a staggered manner, and the corresponding nail holes 21 are also arranged in a staggered manner. The axial ends of each of the first limiting portions 22 are respectively provided with an arc groove, and the outermost nail hole 21 is defined between the arc grooves between two adjacent first limiting portions 22, and the axial ends of each of the second limiting portions 25 are respectively provided with an arc groove, and the inner nail hole 21 is defined between the arc grooves between two adjacent first limiting portions 22. The second thick wall portion 12 is located on the lateral outer side of the arc-shaped groove. When a staple (not shown in the figure) is provided in the staple hole 21, the second thick wall portion 12 is located on the outer side of the staple, and there is a lateral gap between the second thick wall portion 12 and the staple, that is, the second thick wall portion 12 does not directly contact the staple, so as to avoid affecting the smoothness of the staple when being pushed outward, and the second thick wall portion 12 can also limit the position of the outer side of the staple, so as to avoid the staple from accidentally falling out from the outside.

[0045] like Figure 1 , Figure 2 and Figure 4 As shown, the height of the highest point of the side wall of the staple cartridge rack 1 is lower than or equal to the height of the lowest point of the staple cartridge panel 24, the outer wall of the first limiting portion 22 is retracted inward relative to the outer wall of the staple cartridge panel 24, and the staple cartridge panel 24 at least partially covers the side wall end surface of the staple cartridge rack 1. Although the structure of the staple cartridge body 2 is simplified, the structure of the part that does not need to limit the position of the staples is omitted, so that the staple cartridge body 2 is no longer a closed structure as a whole, but the two side walls of the staple cartridge rack 1 can limit the outer staples. Through the combination of the staple cartridge rack 1 and the staple cartridge body 2, the staple cartridge assembly as a whole becomes a relatively closed space, maintaining the stability of the staples in the staple cartridge body 2.

[0046] like Figure 3 and Figure 5 As shown, there is a smooth transition between the first thick wall portion 11 and the adjacent second thick wall portion 12. For example, a smooth transition surface is provided at the junction of the first thick wall portion 11 and the adjacent second thick wall portion 12, so that the first thick wall portion 11 can smoothly transition to the second thick wall portion 12. In this embodiment, the outer wall of the first limiting portion 22 is an arc surface protruding toward the outside, and the inner wall of the first thick wall portion 11 is an arc surface recessed toward the outside adapted to the outer wall of the first limiting portion 22. The inner wall of the first thick wall portion 11 fits with the outer wall of the first limiting portion 22 to improve the stability of the cooperation between the nail magazine frame 1 and the nail magazine body 2.

[0047] Figure 6 and Figure 7 : is a schematic diagram of the structure of the nail magazine assembly of the second embodiment of the present application. The difference between this embodiment and the first embodiment is that the matching groove 23 extends upward to the nail magazine panel 24. Specifically, the matching groove 23 includes a first portion 231 opened in the nail magazine panel 24 and a second portion 232 located at the bottom of the nail magazine panel 24, and the second wall thickness portion 12 is located in the first portion 231 and the second portion 232 of the matching groove 23. Therefore, the top end of the second wall thickness portion 12 extends to the top surface of the nail magazine panel 24, and the top end of the second wall thickness portion 12 is flush with the top surface of the nail magazine panel 24. Therefore, the top surface of the second wall thickness portion 12 and the top surface of the nail magazine panel 24 together form a nail magazine surface. The first portion 231 of the matching groove 23 is connected to the outer side of the nail magazine panel 24.

[0048] Figures 8 to 10 : is a schematic diagram of the structure of the nail magazine assembly of the third embodiment of the present application. The difference between this embodiment and the first embodiment is that the matching groove 23 extends upward to the nail magazine panel 24. Specifically, the matching groove 23 includes a first portion 231 opened in the nail magazine panel 24 and a second portion 232 located at the bottom of the nail magazine panel 24, and the top of the second wall thickness portion 12 is provided with a matching portion 13, the matching portion 13 is located in the first portion 231 of the matching groove 23, and the second wall thickness portion 12 is located in the second portion 232 of the matching groove 23. The top of the matching portion 13 is flush with the top surface of the nail magazine panel 24, so the top surface of the matching portion 13 and the top surface of the nail magazine panel 24 together form a nail magazine surface.

[0049] The above content is a further detailed description of the present application in combination with specific preferred implementation methods, and it cannot be determined that the specific implementation of the present application is limited to these descriptions. For ordinary technicians in the technical field to which the present application belongs, several simple deductions or substitutions can be made without departing from the concept of the present application, which should be deemed to fall within the scope of protection of the present application.

Claims

1. A nail magazine assembly, characterized in that: For a surgical stapler, the staple cartridge assembly comprises: A nail magazine body is provided with multiple rows of nail holes, wherein the nail holes include a first side wall and a second side wall arranged in a transverse direction and extending in an axial direction, wherein the first side wall is located on the outside of the second side wall, and the nail magazine body includes a plurality of limiting portions defining the nail holes, wherein the limiting portions include a plurality of first limiting portions located on the outermost sides of the nail magazine body, wherein the first limiting portions are sequentially arranged in an axial direction, and a plurality of matching grooves are formed between the first limiting portions; A nail magazine rack is used to accommodate the nail magazine body, and the side wall of the nail magazine rack includes a plurality of first wall thickness portions and a plurality of second wall thickness portions, the wall thickness of the second wall thickness portion is greater than the wall thickness of the first wall thickness portion, the first wall thickness portion is laterally opposite to the first limiting portion, the second wall thickness portion is laterally opposite to the matching groove, and the first side wall of at least one outermost nail hole is composed of the second wall thickness portion.

2. The staple cartridge assembly according to claim 1, characterized in that: The first limiting portion and the matching groove are arranged alternately along the axial direction, and the first thick wall portion and the second thick wall portion are arranged alternately along the axial direction.

3. The staple cartridge assembly according to claim 2, characterized in that: Each of the first limiting portions is provided with an arc groove at both axial ends, the nail hole is defined between the arc grooves between two adjacent first limiting portions, the second wall thickness portion is located laterally outside the arc groove, and when a staple is provided in the staple hole, a transverse gap is provided between the second wall thickness portion and the staple.

4. The staple cartridge assembly according to claim 1, characterized in that: There is a smooth transition between the first thick wall portion and the adjacent second thick wall portion.

5. The staple cartridge assembly according to claim 1, characterized in that: The outer wall of the first limiting portion is an arc surface protruding outward, and the inner wall of the first thick wall portion is an arc surface recessed outward and adapted to the outer wall of the first limiting portion.

6. The staple cartridge assembly according to claim 1, characterized in that: The limiting portion further includes at least one row of second limiting portions located inside the first limiting portion, and each row of second limiting portions is arranged at intervals along the axial direction.

7. The staple cartridge assembly according to claim 1, characterized in that: The nail magazine body includes a nail magazine panel, and the limiting portion is arranged on the bottom surface of the nail magazine panel.

8. The staple cartridge assembly according to claim 7, characterized in that: The matching slot includes a first portion opened in the nail magazine panel and a second portion located at the bottom of the nail magazine panel; The second thick wall portion is located in the first part and the second part of the matching groove, or a matching part is provided at the top end of the second thick wall portion, the matching part is located in the first part of the matching groove, and the second thick wall portion is located in the second part of the matching groove.

9. The staple cartridge assembly according to claim 8, characterized in that: The top end of the second thick wall portion or the top end of the matching portion is flush with the top surface of the nail magazine panel.

10. The staple cartridge assembly according to claim 8, characterized in that: The first portion of the mating slot is connected to the outer side edge of the staple cartridge panel.

11. The staple cartridge assembly according to claim 7, characterized in that: The height of the highest point of the side wall of the nail magazine rack is lower than or equal to the height of the lowest point of the nail magazine panel, and the nail magazine panel at least partially covers the end surface of the side wall of the nail magazine rack.

12. The staple cartridge assembly according to claim 11, characterized in that: The outer wall of the first limiting portion is retracted inwardly relative to the outer wall of the nail magazine panel.

13. A surgical stapler, characterized in that: A nail magazine assembly comprising any one of claims 1 to 12.

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