CN111184548A

CN111184548A - Nail bin for surgical instrument and surgical instrument

Info

Publication number: CN111184548A
Application number: CN201811356318.8A
Authority: CN
Inventors: 孙宝峰; 周小朋
Original assignee: Jiangsu Fengh Medical Equipment Co Ltd
Current assignee: Jiangsu Fengh Medical Equipment Co Ltd
Priority date: 2018-11-14
Filing date: 2018-11-14
Publication date: 2020-05-22

Abstract

The invention discloses a nail bin for a surgical instrument, which comprises a nail bin body extending along the longitudinal direction, wherein the nail bin body is provided with a nail cavity penetrating through the upper surface and the lower surface of the nail bin body, the nail bin body is also provided with a first concave part and a second concave part which are formed by downwards recessing the upper surface, the first concave part extends along the transverse direction vertical to the longitudinal direction, the second concave part comprises an inner wall extending along the circumferential direction of the second concave part, and the first concave part and the second concave part are both used for containing human tissues. The upper surface of the nail bin body is provided with the first concave part and the second concave part for containing human tissues, so that the human tissues are not easy to slide on the upper surface of the nail bin body, and the suturing effect is better.

Description

Nail bin for surgical instrument and surgical instrument

Technical Field

The invention relates to a nail cabin for a surgical instrument and the surgical instrument.

Background

Some classes of surgical instruments, including stapling instruments, exist that include a pair of cooperating elongated jaw members, each of which is intended to be inserted into a patient and positioned relative to tissue to be stapled and/or cut. In various embodiments, one of the jaw members supports a staple cartridge having at least two laterally offset rows of staples housed therein, and the other jaw member supports an anvil having staple-forming pockets aligned with the rows of staples in the staple cartridge. However, in the conventional surgical instrument, when the jaw members clamp the tissue to be sutured, the external force generated when the jaw members are closed often displaces the tissue clamped by the jaw members, which affects the suturing effect.

Disclosure of Invention

The invention aims to provide a nail box with an anti-skid function for a surgical instrument.

In order to achieve the purpose, the invention is realized by the following technical scheme: a nail bin for a surgical instrument comprises a nail bin body extending along a longitudinal direction, wherein a nail cavity penetrating through the upper surface and the lower surface of the nail bin body is arranged on the nail bin body, a first concave portion and a second concave portion are formed by downward recessing of the upper surface of the nail bin body, the first concave portion extends along the transverse direction perpendicular to the longitudinal direction, the second concave portion comprises an inner wall extending along the circumferential direction of the second concave portion, and the first concave portion and the second concave portion are both used for containing human tissues.

Further, a knife slot is formed in the nail bin body along the longitudinal direction, and the first concave portion extends to the knife slot from the side face of the nail bin body along the transverse direction.

Further, the first recess intersects at least one of the staple cavities in the lateral direction.

Further, the nail bin body comprises an insertion end and a tail end arranged opposite to the insertion end; the first recess includes a first blocking wall on a side thereof relatively close to the insertion end.

Further, the first concave part further comprises a second stop wall arranged opposite to the first stop wall, and a bottom wall connecting the first stop wall and the second stop wall; the second blocking wall is closer to the tip than the first blocking wall.

Further, the junction of the second blocking wall and the upper surface is provided with a chamfer.

Further, the blocking wall is a vertical wall.

Further, the inner wall surface of the first recess includes at least one guide surface.

Further, the nail bin body comprises an insertion end and a tail end arranged opposite to the insertion end; the first recess includes a blocking surface on a side thereof relatively close to the insertion end.

Further, the guide surface is disposed opposite to the blocking surface, and the guide surface is closer to the end relative to the blocking surface.

Further, the first recess further includes a bottom surface connecting the blocking surface and the guide surface.

Further, the guide surface is an inclined surface.

Further, the blocking surface is a vertical surface.

Further, the first concave parts are uniformly arranged along the longitudinal direction.

Further, the nail bin body comprises an insertion end and a tail end arranged opposite to the insertion end, and the density of the first concave parts arranged close to the tail end is larger than that of the first concave parts arranged close to the insertion end.

Further, the depth of the first recess is smaller than the width of the first recess in the longitudinal direction.

Further, the second concave portion has a cylindrical shape.

Further, the second recesses are laterally spaced from the staple cavities.

Further, the second recess is in a shape of a bow-tie.

Further, the second recess is located between two staple cavities that are adjacently disposed in the lengthwise direction.

The invention also provides a surgical instrument which comprises a handle part, a shaft component arranged on the handle part, an end effector arranged on the shaft component and a nail bin arranged on the end effector, wherein the nail bin is the nail bin.

The invention has the beneficial effects that: the first concave part and the second concave part are formed by downwards sinking from the upper surface of the nail bin body, so that the space height between the nail bin body and the anvil block for clamping and squeezing tissues is not affected, the first concave part and the second concave part are used for containing human tissues, and under the synergistic action of the first concave part and the second concave part, the human tissues are prevented from being displaced due to external force generated when the jaw members are closed, so that the suturing effect is better.

Drawings

FIG. 1 is a schematic structural view of a staple cartridge of the present invention;

FIG. 2 is an exploded perspective view of the staple cartridge of FIG. 1;

FIG. 3 is a schematic structural view of a staple cartridge body according to a first embodiment of the present invention;

FIG. 4 is an enlarged view of the circled portion shown in FIG. 3;

FIG. 5 is a schematic structural view of a staple cartridge body according to a second embodiment of the present invention;

FIG. 6 is an enlarged view of the circled portion shown in FIG. 5;

FIG. 7 is a schematic structural view of a cartridge body according to a third embodiment of the present invention;

FIG. 8 is an enlarged view of the circled portion shown in FIG. 7;

FIG. 9 is a schematic structural view of a staple cartridge body according to another embodiment of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise. The meaning of "a number" is toOne less.

The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

A surgical instrument in the prior art includes a handle portion, a shaft assembly provided on the handle portion, an end effector provided on the shaft assembly, and a staple cartridge (hereinafter, referred to simply as staple cartridge) for the surgical instrument, which is mounted to the end effector. The surgical instrument is a stapling instrument. The end effector includes a pair of cooperating jaw members for insertion into a patient and positioning tissue to be cut and/or stapled. One of the jaw members supports a staple cartridge containing at least two rows of staples therein, the at least two rows of staples being laterally offset from one another, and the other of the jaw members supports an anvil having staple-forming pockets aligned with the rows of staples in the staple cartridge. When the jaw members clamp tissue to be cut and/or stapled (hereinafter, referred to as tissue or tissue to be stapled), the tissue clamped by the jaw members is often displaced due to an external force generated when the jaw members are closed, thereby affecting the stapling effect.

As shown in fig. 1 to 4, which are first exemplary embodiments of the staple cartridge of the present invention, the staple cartridge 100 includes a staple cartridge body 10 extending in a longitudinal direction, staples 20 disposed in the staple cartridge body 10, a staple pusher 30 for pushing the staples 20 out, a pusher 40 for driving the staple pusher 30 to move, and a bracket 50 fixed at the bottom of the staple cartridge body 10. A plurality of staple cavities 16 are provided in the cartridge body 10 that receive staples 20. The cartridge body 10 includes an upper surface 11 and a lower surface 12, and the staple cavity 16 penetrates the upper surface 11 and the lower surface 12 of the cartridge body 10. When the magazine 100 is not used, the cover 60 covers the magazine 100, thereby preventing dust and the like from entering the magazine 100. When the magazine 100 is attached to an end effector (not shown) of a surgical instrument, the cover 60 needs to be removed and then attached. The nail box body 10 comprises an insertion end 101 and a tail end 102 opposite to the insertion end 101. The insertion end 101 is a distal end, the side of the cartridge body 10 where the insertion end 101 is located is a distal side, the end 102 is a proximal end, and the side of the cartridge body 10 where the end 102 is located is a proximal side. The definitions of distal, proximal, and proximal apply to other components and structures of the staple cartridge 100.

The nail bin body 10 is provided with a knife slot 13 along the longitudinal direction, and the knife slot 13 is used for the cutting knife to slide inwards so as to cut tissues. The knife slot 13 divides the cartridge body 10 into a first side 14 and a second side 15, and the staple cavities 16 of the first side 14 are arranged symmetrically to the staple cavities 16 of the second side 15. The first side portion 14 has the same structure as the second side portion 15, and only the first side portion 14 will be described in detail below.

The first side 14 includes three parallel rows of staple cavities 16, each row of staple cavities 16 extending in a longitudinal direction, the three rows of staple cavities 16 being a first row of staple cavities 161, a second row of staple cavities 162, and a third row of staple cavities 163 in a transverse direction perpendicular to the longitudinal direction, the first row of staple cavities 161 being defined by the row of staple cavities 16 adjacent to the knife slot 13. Two adjacent rows of the staple cavities are arranged along the transverse direction in a staggered mode. The first side portion 14 is provided with a plurality of first concave portions 17 and a plurality of second concave portions 18 formed by being depressed downward from the upper surface 11 thereof. The first recesses 17 and the second recesses 18 are used to hold the tissue to be sutured. Since the first concave portion 17 and the second concave portion 18 are both formed by being recessed downward from the upper surface 11, compared with the case that the first concave portion 17 and the second concave portion 18 are not provided or the anti-slip portion is provided protruding from the upper surface 11, the presence of the first concave portion 17 and the second concave portion 18 does not affect the height of the space between the cartridge body 10 of the cartridge 100 and an anvil (not shown) for clamping and pressing the tissue to be stapled, and the height of the space at the first concave portion 17 and the second concave portion 18 is increased, so that the cartridge 100 and the anvil are prevented from crushing the tissue to be stapled due to the reduction of the height of the space when the jaw member positions the tissue to be stapled. Several first recesses 17 extend laterally and parallel to each other. The first recess 17 includes a first stopper wall 171 extending in the lateral direction and a second stopper wall 172 disposed opposite to the first stopper wall 171. The blocking wall is a vertical wall. The vertical means that: the plane in which the vertical walls lie is parallel to the transverse direction and perpendicular to the longitudinal direction. Since the first vertical wall 171 is perpendicular to the longitudinal direction, the first vertical wall 171 hinders the tissue accommodated in the first concave portion 17 from slipping in the longitudinal direction. Since the closure of the jaw members is achieved by the anvil pivoting relative to the cartridge 100, the force exerted by the pivoting of the anvil on the tissue located between the anvil and the cartridge 100 is mainly a force in the longitudinal direction which causes the tissue to have a tendency to slip in the longitudinal direction, and it is therefore necessary to prevent the tissue from slipping in the longitudinal direction. The first recess 17 extends laterally from the knife slot 13 to the side of the first side 14 and passes through one of the staple cavities in the first row of staple cavities 161 (i.e., the first recess 17 intersects the staple cavities), the space between two adjacent staple cavities in the second row of staple cavities 162, and one of the staple cavities in the third row of staple cavities 163 (i.e., the first recess 17 intersects the staple cavities). As the first recess 17 is closer to the staple cavity 16, the closer the first upright wall 171 is to the staple cavity 16, the more pronounced the first upright wall 171 has in hindering the tissue at the staple cavity 16, i.e. the better the positioning of the tissue clamped at the point of stapling, the flatter the stapled tissue. Thus, the first recess 17 in the present invention is positioned close to as many staple cavities 16 as possible, resulting in a better stapling effect. In the present embodiment, the first recesses 17 are uniformly arranged on the upper surface 11 of the first side portion 14 along the transverse direction.

The first recess 17 is a U-shaped groove, and the first recess 17 includes a first vertical wall 171 and a second vertical wall 172 oppositely disposed, and a horizontal bottom wall 173 connecting the first vertical wall 171 and the second vertical wall 172. The first vertical wall 171 and the second vertical wall 172 both extend in the lateral direction and are both perpendicular to the longitudinal direction. The first vertical wall 171 is located on a side of the first recess 17 relatively close to the insertion end 101 of the cartridge body 10, and the second vertical wall 172 is located on a side of the first recess 17 relatively close to the tip 102 of the cartridge body 10. The first vertical wall 171 and the second vertical wall 172 block the sutured tissue in the longitudinal direction, so as to prevent the tissue from longitudinally sliding on the upper side of the cartridge body 10, and particularly, the first vertical wall 171 blocks the tissue from longitudinally sliding towards the insertion end 101. The width of the first concave part 17 along the lengthwise direction is 0.5 mm-2 mm, which is beneficial to containing tissues and avoiding the tissues from separating from the first concave part 17. The depth of the first recess 17 is smaller than the width of the first recess 17, facilitating the tissue to escape from between the cartridge 100 and the anvil after stapling.

Second recess 18 is laterally spaced from staple cavities 16, i.e., second recess 18 is laterally between first row of staple cavities 161 and second row of staple cavities 162, between second row of staple cavities 162 and third row of staple cavities 163, and between third row of staple cavities 163 and the side of cartridge body 10. Second concave parts 18 are arranged on the left and right sides of the plurality of first concave parts 17, and a certain distance is reserved between the second concave parts 18 and the first concave parts 17, as shown in fig. 3 and 4. A plurality of second recesses 18 are formed recessed downward from the upper surface 11, the second recesses 18 including inner walls extending circumferentially thereof, the second recesses 18 being adapted to receive tissue to be sutured. The tissue accommodated in the second recess 18 is blocked by the inner wall thereof in the circumferential direction, particularly in the longitudinal and transverse directions, so that the slippage of the tissue in the longitudinal and transverse directions is hindered. The first recess 17 prevents tissue slippage in the lengthwise direction, and the second recess 18 promotes tissue slippage prevention in the lengthwise direction while preventing tissue slippage in the transverse direction. The second recess 18 cooperates with the first recess 17 to enhance the anti-slippage effect of the upper surface 11 of the cartridge body 10 on the stapled tissue in the longitudinal and transverse directions. The second recess 18 may be provided in a variety of shapes. In the present embodiment, the second recess 18 is provided in a cylindrical shape. In other embodiments, the second recess 18 may be configured as a bow-tie between two longitudinally adjacent staple cavities 16, with the wings of the bow-tie extending in the lateral direction. When the second recess 18 is in the shape of a bow-tie, the second recess 18 forms a large blocking surface in both the longitudinal and transverse directions, which further contributes to preventing the sutured tissue from sliding in both the longitudinal and transverse directions.

As shown in fig. 5-6, in a second embodiment of the staple cartridge of the present invention, the staple cartridge is mounted in the jaw member, and the staple cartridge body 10 ' includes an insertion end 101 ' and a tip 102 ' disposed opposite the insertion end 101 ', wherein the insertion end 101 ' is defined as the end that enters the patient first, and the tip 102 ' is closer to the pivot axis of the jaw member than the insertion end 101 '. The first recess 17 'includes a first blocking wall 171' and a second blocking wall 172 'disposed opposite to each other, and a horizontal bottom wall 173' connecting the first blocking wall 171 'and the second blocking wall 172', which is a vertical wall. That is, the first recess 17 'includes a first vertical wall 171' and a second vertical wall 172 'disposed opposite to each other, and a horizontal bottom wall 173' connecting the first vertical wall 171 'and the second vertical wall 172'. The vertical means that: the plane in which the vertical walls lie is parallel to the transverse direction and perpendicular to the longitudinal direction. The second vertical wall 172 ' is closer to the distal end 102 ' than the first vertical wall 171 ', and the junction of the second vertical wall 172 ' and the upper surface 11 ' of the cartridge body 10 ' is provided as a chamfer 174 '. When the jaw members are closed, tissue adjacent the distal end 102 'is subjected to a compressive force prior to tissue adjacent the insertion end 101', and tissue adjacent the distal end 102 'is subjected to a compressive force prior to tissue adjacent the insertion end 101', such that the chamfer 174 'guides tissue into the first recess 17', and the first upright wall 171 'blocks tissue from sliding longitudinally in the direction of the insertion end 101'. The width of the first concave portion 17 'along the longitudinal direction is 0.5 mm-2 mm, which is beneficial to containing tissues and avoiding the tissues from separating from the first concave portion 17'. The depth of the first recess 17 'is smaller than the width of the first recess 17' in the longitudinal direction, facilitating the tissue to escape from between the cartridge and the anvil after stapling has been completed.

Second plurality of recesses 18 ' are laterally spaced from staple cavities 16 ', i.e., second plurality of recesses 18 ' are laterally between first and second rows of staple cavities 161 ' and 162 ', between second and third rows of staple cavities 162 ' and 163 ', and between third row of staple cavities 163 ' and the sides of cartridge body 10 '. The left and right sides of the first recesses 17 'are provided with second recesses 18', and the second recesses 18 'are spaced from the first recesses 17', as shown in fig. 5 and 6. A plurality of second recesses 18 'are formed recessed downward from the upper surface 11', the second recesses 18 'including inner walls extending circumferentially thereof, the second recesses 18' being adapted to receive tissue to be sutured. The tissue contained in the second recess 18' is blocked circumferentially by its inner wall, in particular in the longitudinal and transverse directions, so that the tissue is hindered from sliding in the longitudinal and transverse directions. The first recess 17 'prevents tissue slippage in the longitudinal direction and the second recess 18' promotes tissue slippage prevention in the longitudinal direction while also preventing tissue slippage in the transverse direction. The first recess 17 'and the second recess 18' cooperate to enhance the anti-slippage effect of the upper surface 11 'of the cartridge body 10' on the stapled tissue in the longitudinal and transverse directions. The second recess 18' may be provided in a variety of shapes. In the present embodiment, the second recess 18' is provided in a cylindrical shape. In other embodiments, the second recess 18 'may also be configured as a bow-tie between two staple cavities 16' that are adjacently disposed in the longitudinal direction, with the wings of the bow-tie extending in the transverse direction, respectively. When the second recess 18 'is in the shape of a bow-tie, the second recess 18' forms a large blocking surface in both the longitudinal and transverse directions, further contributing to the prevention of the sutured tissue from sliding in both the longitudinal and transverse directions. The technical features not mentioned in the present embodiment are the same as those of the first embodiment.

7-8, a third embodiment of a staple cartridge of the present invention is mounted within the jaw member. The cartridge body 10 "includes an insertion end 101" and a tip 102 "disposed opposite the insertion end 101", defining the insertion end 101 "as the end that enters the patient's body first, the tip 102" being closer to the pivot axis of the jaw members relative to the insertion end 101 ". The inner wall surface of the first recess 17 "comprises a guide surface 172", said guide surface 172 "being a ramp. The first recess 17 "further comprises a blocking surface 171" on its side relatively close to the insertion end 101 ", said blocking surface 171" being a vertical surface. The guide surface 172 "is disposed opposite to the blocking surface 171". Said first recess 17 "further comprises a bottom surface 173" connecting the blocking surface 171 "with the guiding surface 172". That is, the inner wall surface of the first recess 17 "includes a vertical surface 171" and an inclined surface 172 "disposed opposite to each other and a horizontal bottom surface 173" connecting the vertical surface 171 "and the inclined surface 172". The vertical means that: the vertical surface 171 "lies in a plane parallel to the lateral direction and perpendicular to the longitudinal direction. The ramp surface 172 "is closer to the end 102" than the vertical surface 171 ". The inclined surface 172 "is parallel to the transverse direction, and the inclined surface 172" extends obliquely downward from the upper surface 11 "gradually away from the upper surface 11", and the direction of extension forms an acute angle with the direction from the tip 102 "toward the insertion end 101". When the jaw members are closed, tissue adjacent the distal end 102 "is subjected to a compressive force prior to tissue adjacent the insertion end 101", and tissue adjacent the distal end 102 "is subjected to a compressive force prior to tissue adjacent the insertion end 101", such that the sloped surface 172 "provides a guide for the introduction of tissue into the first recess 17", and the vertical surface 171 "provides a stop for the tissue in the longitudinal direction to prevent tissue from sliding longitudinally toward the insertion end 101". The width of the first concave part 17 'along the lengthwise direction is 0.5 mm-2 mm, which is beneficial to containing tissues and avoiding the tissues from separating from the first concave part 17'. The depth of the first recess 17 "is smaller than the width of the first recess 17" in the longitudinal direction, facilitating the tissue to escape from between the cartridge and the anvil after stapling.

A plurality of second recesses 18 "are laterally spaced from a plurality of staple cavities 16", i.e., second recesses 18 "are laterally located between first and second rows of staple cavities 161" and 162 ", between second and third rows of staple cavities 162" and 163 ", and between third row of staple cavities 163" and the sides of cartridge body 10 ". The first recesses 17 "are provided with second recesses 18" on both left and right sides, and the second recesses 18 "are spaced apart from the first recesses 17", as shown in fig. 7 and 8. A plurality of second recesses 18 'are formed recessed downward from the upper surface 11', the second recesses 18 'including inner walls extending circumferentially thereof, the second recesses 18' being adapted to receive tissue to be sutured. The tissue contained in the second recess 18 "is blocked circumferentially by its inner wall, in particular in the longitudinal and transverse directions, so that the tissue is hindered from sliding in the longitudinal and transverse directions. The first recess 17 "prevents tissue slippage in the lengthwise direction and the second recess 18" promotes tissue slippage prevention in the lengthwise direction while also preventing tissue slippage in the transverse direction. The first recess 17 "and the second recess 18" cooperate to enhance the anti-slippage effect of the upper surface 11 "of the cartridge body 10" on the stapled tissue in the longitudinal and transverse directions. The second recess 18 "may be provided in a variety of shapes. In the present embodiment, the second recess 18 ″ is provided in a cylindrical shape. In other embodiments, the second recess 18 "may also be configured as a bow-tie between two longitudinally adjacent staple cavities 16", with the wings of the bow-tie extending in the lateral direction, respectively. When the second recess 18 "is in the shape of a bow-tie, the second recess 18" forms a large blocking surface in both the longitudinal and transverse directions, further contributing to the prevention of the sutured tissue from sliding in both the longitudinal and transverse directions. The technical features not mentioned in the present embodiment are the same as those of the first embodiment.

In other embodiments, as shown in FIG. 9, in order to improve the anti-slip effect of the upper surface 11 '"of the cartridge body 10'", the first recesses 17 '"and the second recesses 18'" can be arranged as follows: the density of the first recess 17 "'or/and the second recess 18"' proximate the distal end 102 "'of the cartridge body 10"' is greater than the density of the first recess 17 "'or/and the second recess 18"' proximate the insertion end 101 "'of the cartridge body 10"'. When the jaw members are closed, the tissue adjacent the distal end 102 '"of cartridge body 10'" is first subjected to the compressive forces generated as the jaw members are closed, and thus, the tissue adjacent the distal end 102 '"of cartridge body 10'" is subjected to a greater compressive force relative to the tissue adjacent the insertion end 101 '"of cartridge body 10'". Thus, the density of the first and/or second recesses 17 '"and 18'" proximate the distal end 102 '"is greater than the density of the first and/or second recesses 17'" and 18 '"proximate the insertion end 101'" to better prevent tissue from moving toward the insertion end 101 '"of the cartridge body 10'". The density is as follows: the number of first recesses 17 "'or/and second recesses 18"' per unit length distance in the longitudinal direction. The technical features not mentioned in the present embodiment are the same as those of the first embodiment.

In summary, the plurality of first recesses 17 of the present invention extend transversely on the upper surface 11 of the staple cartridge body 10 and are parallel to each other, and the first recesses 17 are used for accommodating the tissue to be sutured and preventing the tissue to be sutured from sliding longitudinally above the staple cartridge body 10, so that the suturing effect is better; the plurality of second recesses 18 are also used for containing the sutured tissues, and the plurality of second recesses 18 and the plurality of first recesses 17 cooperate to further enhance the anti-slip effect of the upper surface 11 of the cartridge body 10 on the sutured tissues.

Although the embodiment of the present invention has been shown and described, it is understood that the above embodiment is illustrative and not restrictive, and that those skilled in the art may make changes, modifications, substitutions and alterations to the above embodiment without departing from the scope of the present invention, and all such changes, modifications, substitutions and alterations are intended to be within the scope of the present invention.

Claims

1. A staple cartridge for a surgical instrument comprising a staple cartridge body extending in a lengthwise direction, said staple cartridge body being provided with staple cavities through an upper surface and a lower surface thereof, characterized in that: the nail bin body is further provided with a first concave portion and a second concave portion, the first concave portion and the second concave portion are formed by downwards recessing the upper surface, the first concave portion extends along the transverse direction perpendicular to the longitudinal direction, the second concave portion comprises an inner wall extending along the circumferential direction of the second concave portion, and the first concave portion and the second concave portion are both used for containing and retaining human tissues.

2. The staple cartridge for a surgical instrument of claim 1, wherein: the nail bin body is provided with a knife slot along the longitudinal direction, and the first concave part extends to the knife slot from the side surface of the nail bin body along the transverse direction.

3. The staple cartridge for a surgical instrument of any one of claims 1, 2, wherein: the first recess intersects at least one of the staple cavities in the lateral direction.

4. The staple cartridge for a surgical instrument of claim 1, wherein: the nail bin body comprises an insertion end and a tail end arranged opposite to the insertion end; the first recess includes a first blocking wall on a side thereof relatively close to the insertion end.

5. The staple cartridge for a surgical instrument of claim 4, wherein: the first concave part further comprises a second stop wall arranged opposite to the first stop wall and a bottom wall connecting the first stop wall and the second stop wall; the second blocking wall is closer to the tip than the first blocking wall.

6. The staple cartridge for a surgical instrument of claim 5, wherein: the junction of the second blocking wall and the upper surface is provided with a chamfer.

7. The staple cartridge for a surgical instrument of any one of claims 4 to 6, wherein: the blocking wall is a vertical wall.

8. The staple cartridge for a surgical instrument of claim 1, wherein: the inner wall surface of the first recess includes at least one guide surface.

9. The staple cartridge for a surgical instrument of claim 8, wherein: the nail bin body comprises an insertion end and a tail end arranged opposite to the insertion end; the first recess includes a blocking surface on a side thereof relatively close to the insertion end.

10. The staple cartridge for a surgical instrument of claim 9, wherein: the guide surface is disposed opposite the blocking surface, the guide surface being closer to the distal end than the blocking surface.

11. The staple cartridge for a surgical instrument of claim 10, wherein: the first recess further includes a bottom surface connecting the blocking surface and the guide surface.

12. The staple cartridge for a surgical instrument of claim 8, wherein: the guide surface is an inclined surface.

13. The staple cartridge for a surgical instrument of any one of claims 9 to 11, wherein: the blocking surface is a vertical surface.

14. The staple cartridge for a surgical instrument of claim 1, wherein: the first concave parts are uniformly arranged along the longitudinal direction.

15. The staple cartridge for a surgical instrument of claim 1, wherein: the nail bin body comprises an insertion end and a tail end arranged opposite to the insertion end, and the density of first concave parts arranged close to the tail end is larger than that of first concave parts arranged close to the insertion end.

16. The staple cartridge for a surgical instrument of claim 1, wherein: the depth of the first recess is smaller than the width of the first recess in the longitudinal direction.

17. The staple cartridge for a surgical instrument of claim 1, wherein: the second recess is cylindrical.

18. The staple cartridge for a surgical instrument of claim 17, wherein: the second recesses are laterally spaced from the staple cavities.

19. The staple cartridge for a surgical instrument of claim 1, wherein: the second concave part is in a bow-tie shape.

20. The staple cartridge for a surgical instrument of claim 19, wherein: the second recess is located between two staple cavities that are adjacently disposed in the lengthwise direction.

21. A surgical instrument comprising a handle portion, a shaft assembly disposed on the handle portion, an end effector disposed on the shaft assembly, and a staple cartridge mounted to the end effector, characterized in that: the staple cartridge of any one of claims 1-20.