Staple cartridge assembly and surgical instrument

Abstract

The invention discloses a staple cartridge assembly and a surgical instrument. The nail bin assembly comprises a nail bin body and a nail bin protection cover detachably connected to the nail bin body, the nail bin protection cover comprises a partition plate, a connecting part and a convex rib structure, the connecting part is arranged on the partition plate, the partition plate is connected to the nail bin body through the connecting part, and the convex rib structure is arranged on the partition face of the partition plate; the nail bin body comprises a tissue contact platform, a plurality of nail grooves used for containing suturing nails are formed in the tissue contact platform, and each nail groove comprises a near-end end and a far-end end. After the nail bin protection cover is connected with the nail bin body, the convex rib structure covers the near-end end portion and the far-end end portion of the nail groove, and the problem that in the prior art, suturing nails of a nail bin assembly are prone to protruding out of a tissue contact platform of the nail bin body is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical instruments, and in particular to a nail magazine assembly and a surgical instrument. Background Art

[0002] Surgical instruments are surgical tools used in medical surgeries, and suturing instruments are a type of surgical instrument. They are medically used devices that replace manual suturing. Their main working principle is to suturing tissues with titanium staples, similar to a stapler. The suturing instrument includes a pair of matching elongated jaw members, which can be suitable for being inserted into a patient's body to suturing and / or cutting tissues, and the jaw members can support and accommodate a staple magazine assembly. At present, the existing staple magazine assembly includes a staple magazine body and suture staples disposed in the staple magazine body, and the staple magazine body includes a tissue contact platform, and a staple groove for accommodating the suture staples is provided on the tissue contact platform. During suturing, the tissue contact platform contacts the sutured tissue, and the firing member in the suturing instrument pushes the suture staple driver in the staple groove to move upward so that the suture staple in the staple groove is moved out of the staple groove for suturing (i.e., the suture staple is removed).

[0003] In order to prevent the staples from falling out of the staple cavity during storage, transportation or assembly to the end effector of the surgical instrument, the existing staple cartridge assembly and the staple cartridge protective cover of the surgical instrument are completely in contact with the tissue contact platform of the staple cartridge body. However, the staple cartridge protective cover may be deformed and there may be a certain gap between the staple cartridge body and the tissue contact platform. After the staple cartridge assembly is gently shaken, transported and vibrated, some staples may protrude from the tissue contact platform of the staple cartridge body, making the staple cartridge assembly unable to be used normally. In addition, the existing staple cartridge protective cover cannot completely cover the stepped tissue contact platform, and some staples may protrude from the tissue contact platform of the staple cartridge body. Summary of the invention

[0004] In view of the deficiencies of the prior art, the present invention aims to provide a staple cartridge assembly and a surgical instrument, which solve the problem in the prior art that the suture staples of the staple cartridge assembly are easily protruded from the tissue contact platform of the staple cartridge body.

[0005] The present invention is achieved through the following technical solutions: a nail magazine assembly, including a nail magazine body and a nail magazine protective cover detachably connected to the nail magazine body, the nail magazine protective cover including a baffle plate, a connecting portion and a convex rib structure, the connecting portion is arranged on the baffle plate, the baffle plate is connected to the nail magazine body through the connecting portion, and the convex rib structure is arranged on the baffle surface of the baffle plate; the nail magazine body includes a tissue contact platform, the tissue contact platform is provided with a plurality of nail grooves for accommodating suture nails, the nail grooves include a proximal end and a distal end; after the nail magazine protective cover is connected to the nail magazine body, the convex rib structure covers the proximal end and the distal end of the nail groove.

[0006] Furthermore, the rib structure includes a plurality of ribs arranged at intervals along the width direction of the nail magazine body and extending along the length direction of the nail magazine body; a plurality of nail grooves form a plurality of nail groove columns arranged at intervals along the width direction of the nail magazine body; and a plurality of ribs are arranged one-to-one correspondingly to the plurality of nail groove columns to cover the proximal ends and distal ends of the plurality of nail grooves.

[0007] Further, the multiple nail groove rows include a first nail groove row and a second nail groove row, the tissue contact platform includes a first tissue contact platform and a second tissue contact platform, the first tissue contact platform and the second tissue contact platform have different heights, the first nail groove row is opened on the first tissue contact platform, and the second nail groove row is opened on the second tissue contact platform; the rib structure includes a first rib and a second rib with different heights, the first rib covers the first nail groove row, and the second rib covers the second nail groove row; the height of the first tissue contact platform is less than the height of the second tissue contact platform, and the height of the first rib is greater than the height of the second rib, or, the height of the first tissue contact platform is greater than the height of the second tissue contact platform, and the height of the first rib is less than the height of the second rib.

[0008] Furthermore, the first convex rib and the second convex rib are both strip-shaped ribs.

[0009] Furthermore, the rib structure includes at least one rib, and the multiple nail grooves include a first nail groove and a second nail groove adjacent to each other along the width direction of the nail magazine body, and at least one rib covers at least the proximal end and distal end of the first nail groove and the proximal end and distal end of the second nail groove.

[0010] Furthermore, the first nail groove and the second nail groove are arc-shaped nail grooves.

[0011] Furthermore, the rib structure includes rib sections arranged along the length direction of the baffle plate.

[0012] Furthermore, the rib segment covers the proximal end and the distal end of one of the plurality of nail grooves.

[0013] Furthermore, the plurality of nail grooves include a proximal nail groove and a distal nail groove which are adjacently arranged along the length direction of the nail magazine body, and the rib section covers the distal end of the proximal nail groove and the proximal end of the distal nail groove.

[0014] Furthermore, the convex rib section includes a proximal convex rib section and a distal convex rib section adjacently arranged along the length direction of the baffle plate, the proximal convex rib section covers the proximal end of one of the multiple nail grooves, and the distal convex rib section covers the distal end of one nail groove.

[0015] Furthermore, the convex rib structure includes a convex rib segment, the shape of the convex rib segment matches the shape of the nail groove, and the convex rib segment covers the proximal end and the distal end of the nail groove.

[0016] Furthermore, the connecting part includes: a first connecting part, the first connecting part is provided with a hook, a slot is provided on the nail magazine body, and the hook is engaged with the slot; a second connecting part, the second connecting part is provided on the side of the baffle plate, and is used to engage with the side of the nail magazine body.

[0017] According to another aspect of the present invention, a nail magazine assembly is provided, comprising a detachably connected nail magazine protective cover and a nail magazine body, the nail magazine protective cover comprising a baffle plate, a connecting portion and a convex rib structure, the connecting portion is arranged on the baffle plate, the baffle plate is connected to the nail magazine body through the connecting portion, the convex rib structure is arranged on the baffle surface of the baffle plate, the nail magazine body comprises a tissue contact platform, the tissue contact platform is provided with a plurality of nail grooves for accommodating suture nails, the nail grooves comprise a proximal end portion and a distal end portion, after the nail magazine protective cover is connected to the nail magazine body, the convex rib structure and the baffle surface cover the proximal end portion and the distal end portion of the nail groove; the tissue contact platform comprises a first tissue contact platform and a second tissue contact platform, the first tissue contact platform is provided with a first nail groove row, the second tissue contact platform is provided with a second nail groove row, the first tissue contact platform is higher than the second tissue contact platform, the baffle surface covers the first nail groove row, the convex rib structure covers the second nail groove row, or the second tissue contact platform is higher than the first tissue contact platform, the baffle surface covers the second nail groove row, and the convex rib structure covers the first nail groove row.

[0018] Furthermore, the rib structure includes a plurality of rib segments spaced apart along the length direction of the baffle plate.

[0019] Furthermore, the multiple nail grooves include a proximal nail groove and a distal nail groove adjacently arranged along the length direction of the nail magazine body, and one convex rib segment among the multiple convex rib segments covers the distal end of the proximal nail groove and the proximal end of the distal nail groove.

[0020] Furthermore, the multiple rib segments include a proximal rib segment and a distal rib segment adjacently arranged along the length direction of the baffle plate, the proximal rib segment covers the proximal end of one of the multiple nail grooves, and the distal rib segment covers the distal end of one nail groove.

[0021] Furthermore, the connecting part includes: a first connecting part, the first connecting part is provided with a hook, a slot is provided on the nail magazine body, and the hook is engaged with the slot; a second connecting part, the second connecting part is provided on the side of the baffle plate, and is used to engage with the side of the nail magazine body.

[0022] Furthermore, the convex rib structure includes a convex rib segment, the shape of the convex rib segment matches the shape of the nail groove, and the convex rib segment covers the nail groove.

[0023] According to another aspect of the present invention, a surgical instrument is provided. The surgical instrument includes a jaw member and the above-mentioned nail magazine assembly. The jaw member includes a nail magazine seat and a nail support seat pivotally connected to the nail magazine seat, and the nail magazine assembly is accommodated in the nail magazine seat.

[0024] Compared with the prior art, the beneficial effect of the present invention is that: by arranging a rib structure on the baffle surface of the baffle plate of the nail magazine protective cover, after the nail magazine protective cover is connected to the nail magazine main body, the rib structure covers the proximal end and the distal end of the nail slot of the nail magazine main body, on the one hand, the suture nail in the nail slot is blocked from extending out of the nail slot from the tissue contact platform of the nail magazine main body, and the suture nail is prevented from protruding out of the tissue contact platform of the nail magazine main body or even detaching from the nail slot after the nail magazine assembly is shaken or vibrated, and on the other hand, the rib structure can improve the anti-deformation ability of the nail magazine protective cover. The combination of the rib structure and the baffle surface can adapt to the stepped tissue contact platform to cover the proximal end and the distal end of the nail slot, thereby blocking the suture nail in the nail slot from extending out of the nail slot from the tissue contact platform of the nail magazine main body, and preventing the suture nail from protruding out of the tissue contact platform of the nail magazine main body or even detaching from the nail slot after the nail magazine assembly is shaken or vibrated, ensuring the normal use of the nail magazine assembly, and then ensuring the smooth progress of the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a structural schematic diagram of an angle of assembly of a nail magazine protective cover and a nail magazine body in Embodiment 1 of the present invention;

[0026] Figure 2A is a structural schematic diagram of another angle of assembly of the nail magazine protective cover and the nail magazine body in the first embodiment of the present invention;

[0027] Figure 2B is an exploded schematic diagram of a staple cartridge body in Embodiment 1 of the present invention;

[0028] Figure 3 is a cross-sectional view at an angle of the staple cartridge assembly in the first embodiment of the present invention;

[0029] Figure 4 yes Figure 3 A partial enlarged view of the middle A;

[0030] Figure 5 is a cross-sectional view of the staple cartridge assembly in the first embodiment of the present invention at another angle;

[0031] Figure 6 is a structural schematic diagram of an angle of assembly of a nail magazine protective cover and a nail magazine body in Embodiment 2 of the present invention;

[0032] Figure 7 is a structural schematic diagram of another angle of assembly of the nail magazine protective cover and the nail magazine body in the second embodiment of the present invention;

[0033] Figure 8 is a cross-sectional view at an angle of a staple cartridge assembly in Embodiment 2 of the present invention;

[0034] Fig. 9 yes Figure 8A partial enlarged view of point B in the middle;

[0035] Fig.10 is a cross-sectional view of the staple cartridge assembly in the second embodiment of the present invention at another angle;

[0036] Fig.11 This is a structural schematic diagram of an angle of assembly of a nail magazine protective cover and a nail magazine body in Embodiment 3 of the present invention;

[0037] Fig.12 is a structural schematic diagram of another angle of assembly of the nail magazine protective cover and the nail magazine body in the third embodiment of the present invention;

[0038] Fig.13 is a cross-sectional view at an angle of the staple cartridge assembly in the third embodiment of the present invention;

[0039] Fig.14 yes Fig.13 A partial enlarged view of point C in the middle;

[0040] Fig.15 is a cross-sectional view of the staple cartridge assembly in the third embodiment of the present invention at another angle;

[0041] Fig.16 is a structural schematic diagram of an angle of assembly of a nail magazine protective cover and a nail magazine body in a fourth embodiment of the present invention;

[0042] Fig.17 is a structural schematic diagram of another angle of assembly of the nail magazine protective cover and the nail magazine body in the fourth embodiment of the present invention;

[0043] Fig.18 is a cross-sectional view at an angle of a staple cartridge assembly in a fourth embodiment of the present invention;

[0044] Fig.19 is a cross-sectional view of the staple cartridge assembly in the fourth embodiment of the present invention at another angle;

[0045] Fig. 20 is a structural schematic diagram of an angle of assembly of a nail magazine protective cover and a nail magazine body in Embodiment 5 of the present invention;

[0046] Fig.21 is a structural schematic diagram of another angle of assembly of the staple cartridge protection cover and the staple cartridge body in the fifth embodiment of the present invention;

[0047] Fig. 22 is a cross-sectional view at an angle of a staple cartridge assembly in Embodiment 5 of the present invention;

[0048] Fig.23 is a cross-sectional view of a nail magazine assembly in Embodiment 5 of the present invention at another angle;

[0049] Fig.24is a structural schematic diagram of an angle of assembly of a nail magazine protective cover and a nail magazine body in Embodiment 6 of the present invention;

[0050] Fig.25 is a structural schematic diagram of another angle of assembly of the staple cartridge protection cover and the staple cartridge body in Embodiment 6 of the present invention;

[0051] Fig.26 is a cross-sectional view at an angle of a staple cartridge assembly in Embodiment 6 of the present invention;

[0052] Fig. 27 yes Fig.26 A partial enlarged view of point D in the middle;

[0053] Fig.28 is a cross-sectional view of a staple cartridge assembly in Embodiment 6 of the present invention at another angle;

[0054] Fig.29 is a structural schematic diagram of an angle of assembly of a nail magazine protective cover and a nail magazine body in Embodiment 7 of the present invention;

[0055] Fig.30 is a structural schematic diagram of another angle of assembly of the staple cartridge protection cover and the staple cartridge body in Embodiment 7 of the present invention;

[0056] Fig.31 is a cross-sectional view at an angle of a staple cartridge assembly in Embodiment 7 of the present invention;

[0057] Fig.32 yes Fig.31 A partial enlarged view of point E in the middle;

[0058] Fig.33 is a cross-sectional view of a staple cartridge assembly at another angle in the seventh embodiment of the present invention;

[0059] Fig.34 is a structural schematic diagram of an angle of assembly of a nail magazine protective cover and a nail magazine body in Embodiment 8 of the present invention;

[0060] Fig.35 is a structural schematic diagram of another angle of assembly of the staple cartridge protection cover and the staple cartridge body in the eighth embodiment of the present invention;

[0061] Fig.36 is a cross-sectional view at an angle of a staple cartridge assembly in Embodiment 8 of the present invention;

[0062] Fig.37 yes Fig.36 A partial enlarged view of point F in the middle;

[0063] Fig.38 It is a cross-sectional view from another angle of the nail magazine assembly in the eighth embodiment of the present invention.

[0064] The above drawings include the following reference numerals:

[0065] 10. staple cartridge body; 101. staple pusher block; 102. cam portion; 103. staple driver; 104. guide surface; 11. staple slot; 111. first staple slot row; 112. second staple slot row; 113. proximal end; 114. distal end; 115. first staple slot; 116. second staple slot; 117. proximal staple slot; 118. distal staple slot; 12. first tissue contact platform; 13. second Tissue contact platform; 14, card slot; 20, baffle plate; 21, baffle surface; 30, first connecting part; 40, second connecting part; 50, arc-shaped convex rib; 60, convex rib; 70, first convex rib; 80, second convex rib; 90, convex rib segment; 91, proximal convex rib segment; 92, distal convex rib segment; 110, positioning ridge; 1101, reinforcing rib; 120, suture nail; 121, fixed end; 122, nail leg. DETAILED DESCRIPTION

[0066] In order to make the purpose, technical scheme and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0067] It should be understood that the terms "proximal end (side)" and "distal end (side)" used herein are relative to the clinician manipulating the surgical instrument. The term "proximal end (side)" refers to the portion close to the clinician, and the term "distal end (side)" refers to the portion away from the clinician. However, surgical instruments can be used in many directions and positions, so these terms expressing relative positional relationships are not limited and absolute.

[0068] In the present invention, unless otherwise clearly specified and limited, the terms such as "connected" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, a movably connection, or an integral body; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements such as abutment. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. It should be noted that when there are qualifiers before "connected" and "connection", they have the meaning defined by the corresponding qualifiers, and only exclude situations that obviously need to be excluded, and do not exclude other possible situations. For example, "detachably connected" refers to a detachable connection, and does not include integration, but movable connection, etc. are not excluded.

[0069] See also Figures 1 to 5 The nail magazine assembly includes a nail magazine protective cover and a nail magazine body 10, the nail magazine protective cover is detachably connected to the nail magazine body 10, and the nail magazine protective cover includes a baffle plate 20, a connecting portion and a convex rib structure. The connecting portion is arranged on the baffle plate 20, and is used to connect the baffle plate 20 to the nail magazine body 10. Specifically, a plurality of through holes are arranged vertically through the nail magazine body 10, and the through holes form a nail groove 11. A nail pushing block 101 is provided at the proximal end of the nail magazine body 10, and a support member is also provided below the nail magazine body 10. A portion of the suture nail driver 103 of the nail magazine assembly is located in the nail groove 11 to support the suture nail 120, and the nail groove 11 limits the suture nail driver 103 to only move up and down along the height direction of the nail magazine body 10. When the stapler assembly is installed on the stapler and the stapler protective cover is removed, the driving structure of the stapler can drive the staple pusher block 101 to move distally, and the cam portion 102 of the staple pusher block 101 applies a force to the guide surface 104 of the staple driver 103, and the staple driver 103 moves toward the outside of the staple slot 11, thereby pushing the staple 120 to move toward the outside of the staple slot 11 and pierce the patient's tissue until the staple 120 is out of the staple slot 11.

[0070] The suture staple 120 is roughly in the shape of a "U", including a fixed end 121 extending in the horizontal direction and a staple leg 122 extending in the vertical direction. When the staple cartridge assembly is vibrated, the suture staple 120 moves toward the outside of the staple slot 11, and the staple leg 122 extends out of the tissue contact platform. In other words, it is only necessary to limit the staple leg 122 from extending out of the tissue contact platform to prevent the suture staple 120 from extending out of the tissue contact platform. Furthermore, the shape of the staple slot 11 is usually matched with the shape of the suture staple 120 to better guide the movement of the suture staple 120, so the staple leg 122 of the suture staple 120 moves toward the outside along the end of the staple slot 11. In other words, it is necessary to set a blocking structure just above the end of the staple slot 11 to limit the staple foot of the suture staple 120 from extending out of the tissue contact platform.

[0071] Specifically, a convex rib structure is provided on the baffle surface 21 of the baffle plate 20 of the staple cartridge protective cover, and the baffle surface 21 is arranged opposite to the tissue contact platform of the staple cartridge body 10. After the staple cartridge protective cover is connected to the staple cartridge body 10, the convex rib structure can cover the distal end 114 and the proximal end 113 of each of the plurality of staple slots 11, so as to prevent the suture staples 120 from extending out of the staple slot 11 from the tissue contact platform of the staple cartridge body 10. It can be understood that the "covering" mentioned above means that at least a part of the convex rib structure is located directly above the proximal end and the distal end of the staple slot 11, and there is no gap or a small gap between the two, so as to prevent the suture staples 120 from protruding out of the tissue contact platform of the staple cartridge body 10 or even detaching from the staple slot 11 after the staple cartridge assembly is shaken or vibrated, thereby ensuring the normal use of the staple cartridge assembly and further ensuring the smooth progress of the operation.

[0072] See also Figures 1 to 5 The convex rib structure includes a plurality of convex ribs 60, and the plurality of convex ribs 60 are arranged at intervals along the width direction of the baffle plate 20 and each convex rib 60 is extended along the length direction of the baffle plate 20. Correspondingly, a plurality of nail grooves 11 are arranged at intervals along the length direction of the nail magazine body 10 and form a plurality of rows, and the convex rib structure covers the plurality of rows of nail grooves 11. It should be noted that the length direction of the baffle plate 20 is from the proximal end to the distal end, and the width direction is perpendicular to the length direction. Similarly, the length direction of the nail magazine body 10 is also from the proximal end to the distal end, and the width direction is perpendicular to the length direction.

[0073] In order to prevent the suture staples 120 from being separated from the staple slot 11 and the staple magazine body 10 due to squeezing or external force during storage and transportation, the staple magazine protective cover is detachably installed on the staple magazine body 10 before use, and then the staple magazine assembly is assembled into the end actuator of the surgical instrument. After removing the staple magazine protective cover, the surgical suturing operation can be performed.

[0074] See also Figures 1 to 2A The connecting part includes a first connecting part 30 and a second connecting part 40. The first connecting part 30 is provided with a hook, and the nail magazine body 10 is provided with a slot 14 for clamping the baffle plate 20 with the nail magazine body 10. The second connecting part 40 is provided on the side of the baffle plate 20 for clamping with the side of the nail magazine body 10.

[0075] Specifically, there are at least two first connection parts 30 and second connection parts 40, and they are symmetrically arranged along the central axis of the nail magazine protective cover. The distance between the two second connection parts 40 is roughly equal to the width of the tissue contact platform of the nail magazine body 10. In this way, the nail magazine body 10 is fixed between the two second connection parts 40 to prevent the nail magazine protective cover from moving relative to the nail magazine body 10. The nail magazine protective cover can be positioned and detachably connected to the nail magazine body 10, and it is easy to disassemble. Figures 1 to 2A , Figure 6 , the nail magazine protective cover also includes a positioning ridge 110. The positioning ridge 110 is arranged on the baffle plate 20 and is perpendicular to the baffle plate 20. The positioning ridge 110 is inserted into the nail pushing groove of the nail magazine body 10. The height of the positioning ridge 110 is substantially equal to the groove depth of the nail pushing groove. The positioning ridge 110 is provided with reinforcing ribs 1101. The reinforcing ribs 1101 are symmetrically distributed on both sides of the positioning ridge 110. The reinforcing ribs 1101 on the same side of the positioning ridge 110 are arranged at intervals. When the positioning ridge 110 is inserted into the nail pushing groove of the nail magazine body 10, the reinforcing ribs 1101 contact both sides of the nail pushing groove, thereby enhancing the fixing effect between the nail magazine protective cover and the nail magazine body 10.

[0076] The present invention also provides a surgical instrument, comprising the above-mentioned nail magazine assembly.

[0077] Embodiment 1

[0078] like Figures 1 to 5 In this embodiment, the rib structure includes a plurality of ribs 60 arranged at intervals along the width direction of the staple cartridge body 10, and the plurality of ribs 60 extend along the length direction of the staple cartridge body 10; the plurality of nail slots 11 include a plurality of nail slot columns arranged at intervals along the width direction of the staple cartridge body 10, and the nail slots 11 in each nail slot column are arranged at intervals along the length direction of the staple cartridge body 10; the plurality of ribs 60 are arranged one by one corresponding to the plurality of nail slot columns to cover the proximal ends 113 and the distal ends 114 of the plurality of nail slots 11. That is, a strip-shaped rib 60 is located above a column of nail slots 11 and covers at least the proximal ends 113 and the distal ends 114 of each nail slot 11 in the column of nail slots 11. When the staple cartridge assembly is vibrated, the suture staples 120 move outward in the nail slots 11, and the staple legs 122 are blocked by the ribs 60 and cannot extend out of the tissue contact platform.

[0079] In this embodiment, the tissue contact platform of the staple cartridge body 10 is a plane, and accordingly, the heights of the convex ribs 60 are the same. It can be understood that the height of the convex rib 60 refers to the distance that the convex rib 60 protrudes from the baffle surface 21 of the baffle plate 20. Preferably, the convex rib 60 is a strip rib.

[0080] In this embodiment, the convex rib 60 can not only cover the nail groove 11, but also improve the strength of the nail magazine protective cover and reduce deformation.

[0081] Embodiment 2

[0082] The difference between the second embodiment and the first embodiment is that the structure of the staple cartridge body 10 is different from that of the first embodiment, and in this embodiment, the rib structure and the blocking surface 21 are used together to realize the limit stop of the suture staples 120 .

[0083] See also Figure 7 The plurality of nail slots 11 include a first nail slot row 111 and a second nail slot row 112 which are arranged at intervals along the width direction of the baffle plate 20, and the nail slots 11 in each nail slot row are arranged at intervals along the length direction of the baffle plate 20. The first nail slot row 111 and the second nail slot row 112 are both multiple rows, and there are multiple nail slots 11 in each nail slot row. The tissue contact platform of the staple cartridge body 10 includes a first tissue contact platform 12 and a second tissue contact platform 13, and the first tissue contact platform 12 and the second tissue contact platform 13 have different heights, the first nail slot row 111 is opened on the first tissue contact platform 12, and the second nail slot row 112 is opened on the second tissue contact platform 13.

[0084] See also Figure 6 In this embodiment, the rib structure includes a plurality of first ribs 70 , which are arranged at intervals along the width direction of the baffle plate 20 and extend along the length direction of the baffle plate 20 . The first ribs 70 cover the first nail groove array 111 .

[0085] In this embodiment, there are two second tissue contact platforms 13, and the two second tissue contact platforms 13 are respectively located on both sides of the first tissue contact platform 12 along the width direction of the staple cartridge body 10. The height of the first tissue contact platform 12 is less than the height of the second tissue contact platform 13, and the position where the first tissue contact platform 12 is located, that is, the middle groove is formed between the two second tissue contact platforms 13.

[0086] It is understandable that, due to the presence of the middle groove, the position of the baffle plate 20 corresponding to the second nail groove row 112 does not need to be provided with ribs, and the second nail groove row 112 can be covered by the baffle surface 21. That is, in this embodiment, the first rib 70 covers the first nail groove row 111, and the baffle surface 21 covers the second nail groove row 112, that is, the rib structure and the baffle surface 21 together realize the limit stop of the suture nail 120.

[0087] See also Figures 6 to 10 In a specific embodiment, the staple cartridge body 10 includes four first staple slot rows 111 and two second staple slot rows 112, and correspondingly, four first convex ribs 70 are provided. The four first convex ribs 70 extend into the middle groove, thereby covering the first staple slot rows 111 to stop and limit the suture staples 120. Furthermore, the second staple slot rows 112 opened on the second tissue contact platform 13 are covered by the blocking surface 21 of the blocking plate 20.

[0088] In an optional embodiment, the height of the first tissue contact platform 12 is greater than the height of the second tissue contact platform 13, and the first tissue contact platform 12 protrudes from the two second tissue contact platforms 13 to form an intermediate boss. The rib structure includes two second ribs 80 but does not include the first rib 70. The second ribs 80 are arranged at intervals along the width direction of the baffle plate 20 and extend along the length direction of the baffle plate 20. The second ribs 80 cover the second nail groove row 112.

[0089] In this optional embodiment, due to the presence of the middle boss, the position of the baffle plate 20 corresponding to the first tissue contact platform 12 does not need to be provided with ribs, and the first nail groove row 111 can be covered by the baffle surface 21. In other words, the second rib 80 covers the second nail groove row 112, and the baffle surface 21 covers the first nail groove row 111, that is, the rib structure and the baffle surface 21 together realize the limit stop of the suture nail 120.

[0090] This embodiment only takes six nail slot columns as an example for description, and the number of nail slot columns can be other numbers, which can be selected according to actual needs.

[0091] Embodiment 3

[0092] The difference between the third embodiment and the first embodiment is that the structure of the rib structure and the structure of the staple cartridge body 10 are different from those of the first embodiment.

[0093] For details, please refer to Figures 11 to 15 The convex rib structure includes a first convex rib 70 and a second convex rib 80, which are arranged at intervals along the width direction of the baffle plate 20 and extend along the length direction of the baffle plate 20. There are multiple first convex ribs 70 and second convex ribs 80, and the first convex ribs 70 and the second convex ribs 80 have different heights. Further, the first convex rib 70 covers the first nail groove row 111, and the second convex rib 80 covers the second nail groove row 112.

[0094] In this embodiment, the height of the first convex rib 70 is greater than the height of the second convex rib 80. After the staple cartridge protection cover is connected to the staple cartridge body 10, the first convex rib 70 extends into the middle groove to cover the first staple slot row 111, and the second convex rib 80 covers the second staple slot row 112 of the second tissue contact platform 13 located outside the middle groove.

[0095] In a specific embodiment, the staple cartridge body 10 includes four first staple slot columns 111 and two second staple slot columns 112, and correspondingly, there are four first convex ribs 70 and two second convex ribs 80. The four first convex ribs 70 correspond to the four first staple slot columns 111, and the two second convex ribs 80 correspond to the two second staple slot columns 112, that is, each convex rib 60 in this embodiment is arranged in a one-to-one correspondence with each staple slot column. In order to improve the limiting and stopping effect on the second staple slot column 112, the baffle plate 20 is also provided with a corresponding convex rib 60, namely, the second convex rib 80. At the same time, since the height of the first tissue contact platform 12 is less than the height of the second tissue contact platform 13, the height of the first convex rib 70 is greater than the height of the second convex rib 80.

[0096] In an optional embodiment, when the tissue contact platform of the staple cartridge body 10 is formed with an intermediate boss, that is, the height of the first tissue contact platform 12 is greater than the height of the second tissue contact platform 13 , the height of the first rib 70 is less than the height of the second rib 80 .

[0097] In order to improve the limiting and stopping effect of the rib structure on the nail groove 11 , the shape of the rib structure may match the shape of the nail groove 11 .

[0098] Embodiment 4

[0099] The difference between the fourth embodiment and the first embodiment is that the arrangement of the rib structure and the nail groove 11 is different from that of the first embodiment.

[0100] See also Figures 16 to 19In this embodiment, the cross section of the nail groove 11 is arc-shaped, that is, the nail groove 11 is an arc-shaped nail groove. Accordingly, the rib structure includes a plurality of arc-shaped ribs 50, and each arc-shaped rib 50 is arranged in a one-to-one correspondence with each arc-shaped nail groove. In other words, after the nail magazine protective cover is connected to the nail magazine body 10, one arc-shaped rib 50 is located above one arc-shaped nail groove. Specifically, each arc-shaped rib 50 can at least cover the two end portions of each arc-shaped nail groove, that is, the proximal end portion 113 and the distal end portion 114, so as to limit and stop the nail legs 122 of each suture nail 120.

[0101] It should be noted that the cross-section of the nail groove 11 can also be a strip or other shapes, and it is only necessary to cover the two end portions of the nail groove 11 with the arc-shaped rib 50. Similarly, the nail groove 11 can also be an arc-shaped nail groove, and the rib structure includes a strip-shaped rib. In this way, the strip-shaped rib can also cover the two end portions of the arc-shaped nail groove. It can be selected according to actual needs.

[0102] In this embodiment, the nail grooves 11 on the nail magazine body 10 are located at the same horizontal plane, so the arc-shaped ribs 50 are also located at the same height. Of course, in order to adapt to the tissue contact platform with a stepped surface, the heights of the ribs in each row can also be different.

[0103] In order to improve the limiting and stopping efficiency of the convex rib structure and reduce the manufacturing cost and difficulty, one convex rib 60 of the convex rib structure can cover two adjacent nail grooves 11 in the width direction.

[0104] Embodiment 5

[0105] The difference between the fifth embodiment and the first embodiment is that the arrangement of the rib structure is different from that of the first embodiment.

[0106] In this embodiment, the rib structure includes at least one rib 60, and the plurality of nail grooves 11 include a first nail groove 115 and a second nail groove 116 adjacently arranged along the width direction of the nail magazine body 10. At least one rib 60 covers the proximal end and the distal end of the first nail groove 115, and covers the proximal end and the distal end of the second nail groove 116.

[0107] For details, please refer to Figure 20 to Figure 23 , the first nail groove 115 and the second nail groove 116 are arc-shaped nail grooves, and the convex rib 60 at least covers the proximal end and the distal end of the first nail groove 115, and covers the proximal end and the distal end of the second nail groove 116. In other words, the convex rib 60 and the nail groove 11 in this embodiment are arranged in a "one-to-many" manner, thereby reducing the number of convex ribs 60 and reducing the manufacturing difficulty and cost of the nail magazine protective cover.

[0108] Further, the first nail grooves 115 are multiple and are arranged at intervals along the length direction of the nail magazine body 10 to form nail groove rows, and correspondingly, the second nail grooves 116 are also multiple and are arranged at intervals along the length direction of the nail magazine body 10 to form nail groove rows. In a specific embodiment, both sides of the push nail groove have a row of first nail grooves 115 and a row of second nail grooves 116, and correspondingly, a strip-shaped convex rib 60 is respectively arranged on both sides of the positioning ridge 110. The convex rib 60 extends in the middle of the row of first nail grooves 115 and the row of second nail grooves 116, and the convex rib 60 has a sufficient width to at least cover the two ends of each nail groove 11 in each nail groove row to stop and limit the suture nail 120.

[0109] In order to reduce manufacturing cost and weight, the rib structure along the length direction of the baffle plate 20 may not be a continuous strip rib, but may be divided into a plurality of rib segments.

[0110] Embodiment 6

[0111] The difference between the sixth embodiment and the first embodiment is that the arrangement of the rib structure is different from that of the first embodiment.

[0112] See also Figure 24 to Figure 28 The rib structure includes a plurality of rib segments 90 spaced apart along the length direction of the baffle plate 20, and the rib segments 90 cover the distal end 114 and the proximal end 113 of the nail groove 11. Specifically, the length of the rib segment 90 matches the length of the nail groove 11 along the length direction of the nail magazine body 10, so as to ensure that each rib segment 90 can cover both ends of each nail groove 11.

[0113] In this embodiment, each rib segment 90 is arranged in a one-to-one correspondence with each nail groove 11, that is, one rib segment 90 at least covers the proximal end 113 and the distal end 114 of one nail groove 11, thereby achieving precise stopping of the suture nail 120, and can reduce the actual length of the rib structure and reduce the manufacturing cost.

[0114] Embodiment 7

[0115] The difference between the seventh embodiment and the sixth embodiment is that the arrangement of the rib structure is different from that of the sixth embodiment.

[0116] See also Figure 29 to Figure 33 The rib 60 includes a plurality of rib segments 90 arranged at intervals along the length direction of the baffle plate 20, and the plurality of nail grooves 11 include a proximal nail groove 117 and a distal nail groove 118 arranged adjacent to each other along the length direction of the nail magazine body 10, and the rib segments 90 cover the distal end of the proximal nail groove 117 and the proximal end of the distal nail groove 118. Specifically, the length of the rib segment 90 matches the distance between the proximal nail groove 117 and the distal nail groove 118, so as to ensure that each rib segment 90 can cover the adjacent ends of the proximal nail groove 117 and the distal nail groove 118.

[0117] Through the above arrangement, the suture staple 120 can be accurately stopped, and the actual length of the rib 60 can be reduced, thereby reducing the manufacturing cost.

[0118] Embodiment 8

[0119] The difference between the eighth embodiment and the sixth embodiment is that the arrangement of the rib structure is different from that of the sixth embodiment.

[0120] See also Figure 34 to Figure 38 The plurality of convex rib segments 90 include a proximal convex rib segment 91 and a distal convex rib segment 92 which are adjacently arranged along the length direction of the baffle plate 20. The proximal convex rib segment 91 covers the proximal end 113 of the nail groove 11, and the distal convex rib segment 92 covers the distal end 114 of the nail groove 11. That is, the proximal convex rib segment 91 and the distal convex rib segment 92 in this embodiment are a group, corresponding to one nail groove 11, so as to cover both ends of the nail groove 11.

[0121] In this embodiment, the width of the rib segment 90 is greater than the opening width of the nail groove 11, so that the rib segment 90 can adapt to the openings of the nail groove 11 of different shapes, which can not only achieve precise stopping of the suture nail 120, but also reduce the actual length of the rib structure and reduce the manufacturing cost.

[0122] Embodiment 9

[0123] The present embodiment provides a surgical instrument, which may be a stapler. The surgical instrument includes an end effector, a driving mechanism, a shaft assembly, an operating assembly, etc. The end effector includes a jaw assembly, in which a staple cartridge assembly as described in any one of the first to eighth embodiments is installed. The jaw assembly has an open state and a closed state. In response to the operation of the operating assembly by medical personnel, the jaw assembly can switch between the open state and the closed state. When the jaw assembly is in the open state, human tissue can enter the jaw assembly, and when the jaw assembly is in the closed state, human tissue is clamped. In response to the operation of the operating assembly by medical personnel, the driving mechanism drives the cutting knife in the jaw assembly to advance and cut the tissue, and at the same time fires the suture staples in the staple cartridge assembly to suture the incision of the tissue to prevent blood from seeping out of the incision.

[0124] It should be noted that the rib structures and the arrangement of the nail grooves 11 in the above embodiments of the present invention can be mixed and used according to actual needs. For example, one row of nail grooves 11 and the corresponding rib segments 90 adopt the arrangement in embodiment 6, and another row of nail grooves 11 and the corresponding rib segments 90 adopt the arrangement in embodiment 7 or 8, or the nail grooves 11 and the rib structures on both sides of the push nail groove adopt the arrangement of any two or more of the above embodiments, which can be selected according to actual needs.

[0125] To summarize, by providing a convex rib structure on the baffle surface 21 of the baffle plate 20 of the nail magazine protective cover, after the nail magazine protective cover is connected to the nail magazine main body 10, the convex rib structure covers the proximal end 113 and the distal end 114 of the nail slot 11 of the nail magazine main body 10. On the one hand, it blocks the suture staples 120 in the nail slot 11 from extending out of the tissue contact platform of the nail magazine main body 10 from the nail slot 11, thereby preventing the suture staples 120 from protruding out of the tissue contact platform of the nail magazine main body 10 or even detaching from the nail slot 11 after the nail magazine assembly is shaken or vibrated. On the other hand, the provision of the convex rib structure can improve the deformation resistance of the nail magazine protective cover. Through the combination of the rib structure and the blocking surface 21, the stepped tissue contact platform can be adapted to cover the proximal end 113 and the distal end 114 of the nail slot 11, thereby blocking the suture staples 120 in the nail slot 11 from extending out of the tissue contact platform of the nail magazine body 10 from the nail slot 11, and preventing the suture staples 120 from protruding out of the tissue contact platform of the nail magazine body 10 or even detaching from the nail slot 11 after the nail magazine assembly is shaken or vibrated, thereby ensuring the normal use of the nail magazine assembly and further ensuring the smooth progress of the operation.

[0126] It should be understood that although this specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each implementation mode may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0127] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the present invention. They are not intended to limit the scope of protection of the present invention. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. A nail magazine assembly, comprising a nail magazine body and a nail magazine protective cover detachably connected to the nail magazine body, characterized in that: The nail magazine protective cover includes a baffle plate, a connecting portion and a convex rib structure, wherein the connecting portion is arranged on the baffle plate, the baffle plate is connected to the nail magazine body through the connecting portion, and the convex rib structure is arranged on the baffle surface of the baffle plate; the nail magazine body includes a tissue contact platform, the tissue contact platform is provided with a plurality of nail grooves for accommodating suture nails, and the nail grooves include a proximal end and a distal end; after the nail magazine protective cover is connected to the nail magazine body, the convex rib structure covers the proximal end and the distal end of the nail groove.

2. The staple cartridge assembly according to claim 1, characterized in that: The convex rib structure includes a plurality of convex ribs which are arranged at intervals along the width direction of the nail magazine body and extend along the length direction of the nail magazine body; the plurality of nail grooves form a plurality of nail groove columns which are arranged at intervals along the width direction of the nail magazine body; the plurality of convex ribs are arranged in one-to-one correspondence with the plurality of nail groove columns to cover the proximal ends and distal ends of the plurality of nail grooves.

3. The staple cartridge assembly according to claim 2, characterized in that: The multiple nail groove rows include a first nail groove row and a second nail groove row, the tissue contact platform includes a first tissue contact platform and a second tissue contact platform, the first tissue contact platform and the second tissue contact platform have different heights, the first nail groove row is opened on the first tissue contact platform, and the second nail groove row is opened on the second tissue contact platform; the rib structure includes a first rib and a second rib with different heights, the first rib covers the first nail groove row, and the second rib covers the second nail groove row; the height of the first tissue contact platform is smaller than the height of the second tissue contact platform, and the height of the first rib is larger than the height of the second rib, or the height of the first tissue contact platform is larger than the height of the second tissue contact platform, and the height of the first rib is smaller than the height of the second rib.

4. The staple cartridge assembly according to claim 2 or 3, characterized in that: The first convex rib and the second convex rib are both strip-shaped ribs.

5. The staple cartridge assembly according to claim 1, characterized in that: The convex rib structure includes at least one convex rib, and the multiple nail grooves include a first nail groove and a second nail groove adjacent to each other along the width direction of the nail magazine body, and the at least one convex rib at least covers the proximal end and distal end of the first nail groove and the proximal end and distal end of the second nail groove.

6. The staple cartridge assembly according to claim 5, characterized in that: The first nail groove and the second nail groove are arc-shaped nail grooves.

7. The staple cartridge assembly according to claim 1, characterized in that: The rib structure includes rib sections arranged along the length direction of the baffle plate.

8. The staple cartridge assembly according to claim 7, characterized in that: The rib segment covers the proximal end and the distal end of one of the plurality of nail grooves.

9. The staple cartridge assembly according to claim 7, characterized in that: The multiple nail grooves include a proximal nail groove and a distal nail groove which are adjacently arranged along the length direction of the nail magazine body, and the rib segment covers the distal end of the proximal nail groove and the proximal end of the distal nail groove.

10. The staple cartridge assembly according to claim 7, characterized in that: The convex rib section includes a proximal convex rib section and a distal convex rib section which are adjacently arranged along the length direction of the baffle plate, the proximal convex rib section covers the proximal end of one nail groove among the multiple nail grooves, and the distal convex rib section covers the distal end of the one nail groove.

11. The staple cartridge assembly according to claim 1, characterized in that: The convex rib structure comprises a convex rib segment, the shape of which matches the shape of the nail groove, and the convex rib segment covers the proximal end and the distal end of the nail groove.

12. The staple cartridge assembly according to claim 1, characterized in that: The connecting portion comprises: A first connecting portion, wherein the first connecting portion is provided with a hook, and a slot is provided on the staple cartridge body, and the hook is engaged with the slot; The second connecting portion is arranged on the side of the baffle plate and is used for clamping with the side of the nail magazine body.

13. A staple cartridge assembly, comprising a detachably connected staple cartridge protective cover and a staple cartridge body, characterized in that: The staple cartridge protection cover comprises a baffle plate, a connecting portion and a convex rib structure, wherein the connecting portion is arranged on the baffle plate, the baffle plate is connected to the staple cartridge body through the connecting portion, the convex rib structure is arranged on a baffle surface of the baffle plate, the staple cartridge body comprises a tissue contact platform, the tissue contact platform is provided with a plurality of staple grooves for accommodating suture staples, the staple grooves comprise a proximal end portion and a distal end portion, and after the staple cartridge protection cover is connected to the staple cartridge body, the convex rib structure and the baffle surface cover the proximal end portion and the distal end portion of the staple groove; The tissue contact platform comprises a first tissue contact platform and a second tissue contact platform, the first tissue contact platform is provided with a first nail groove row, the second tissue contact platform is provided with a second nail groove row, the first tissue contact platform is higher than the second tissue contact platform, the blocking surface covers the first nail groove row, the convex rib structure covers the second nail groove row, Alternatively, the second tissue contact platform is higher than the first tissue contact platform, the blocking surface covers the second nail groove row, and the rib structure covers the first nail groove row.

14. The staple cartridge assembly according to claim 13, characterized in that: The rib structure includes a plurality of rib segments arranged at intervals along the length direction of the baffle plate.

15. The staple cartridge assembly according to claim 14, characterized in that: The multiple nail grooves include a proximal nail groove and a distal nail groove adjacent to each other along the length direction of the nail magazine body, and one convex rib segment among the multiple convex rib segments covers the distal end of the proximal nail groove and the proximal end of the distal nail groove.

16. The staple cartridge assembly according to claim 14, characterized in that: The multiple rib segments include a proximal rib segment and a distal rib segment adjacently arranged along the length direction of the baffle plate, the proximal rib segment covers the proximal end of one nail groove among the multiple nail grooves, and the distal rib segment covers the distal end of the one nail groove.

17. The staple cartridge assembly according to claim 13, characterized in that: The connecting portion comprises: A first connecting portion, wherein the first connecting portion is provided with a hook, and a slot is provided on the staple cartridge body, and the hook is engaged with the slot; The second connecting portion is arranged on the side of the baffle plate and is used for clamping with the side of the nail magazine body.

18. The staple cartridge assembly according to claim 13, characterized in that: The convex rib structure includes a convex rib segment, the shape of the convex rib segment matches the shape of the nail groove, and the convex rib segment covers the nail groove.

19. A surgical instrument, comprising a jaw member and a staple cartridge assembly according to any one of claims 1 to 18, wherein the jaw member comprises a staple cartridge seat and a staple anvil pivotally connected to the staple cartridge seat, wherein: The nail magazine seat accommodates the nail magazine assembly.

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