CN108652696B

CN108652696B - Nail bin assembly

Info

Publication number: CN108652696B
Application number: CN201710212521.7A
Authority: CN
Inventors: 孙宝峰; 龚烨
Original assignee: Jiangsu Fengh Medical Equipment Co Ltd
Current assignee: Jiangsu Fengh Medical Equipment Co Ltd
Priority date: 2017-03-31
Filing date: 2017-03-31
Publication date: 2020-02-18
Anticipated expiration: 2037-03-31
Also published as: CN108652696A

Abstract

The invention discloses a nail bin assembly which comprises a nail bin body and a nail bin protective cover, wherein the nail bin body comprises a nail cavity and a suturing nail, and at least one part of the suturing nail is placed in the nail cavity; the nail bin protective cover comprises a baffle plate; the nail bin protective cover is detachably connected with the nail bin body, and the connection is direct connection or indirect connection; after the nail bin protective cover is connected with the nail bin body, a space is formed between the nail bin body and the separation baffle plate, and the space is used for preventing the separation baffle plate from contacting with the nail cavity. According to the nail bin assembly, the suturing nails can be well blocked in the nail bin body before being triggered, and the condition that the suturing nails are separated from the nail bin body due to extrusion or external force in the storage and transportation processes is avoided; meanwhile, the problem that the nail bin protective cover can be separated from the nail bin assembly together with partial suturing nails when the nail bin protective cover is removed is solved.

Description

Nail bin assembly

Technical Field

The invention relates to a surgical instrument, in particular to a nail bin assembly, and belongs to the field of medical instruments.

Background

The surgical instrument is a surgical tool in medical operation, and the suturing instrument is one of the surgical instruments, is a device used in medicine and replaces manual suturing, and mainly works on the principle that titanium nails are used for separating or inosculating tissues, and is similar to a stapler. The stapling instrument includes a pair of cooperating elongated jaw members that may be adapted to be inserted into a patient to staple and/or cut tissue, and that may support a cartridge assembly. At present, current nail storehouse subassembly includes the nail storehouse body and sets up the sewing nail at this internal nail that sews up of nail storehouse, this internal a plurality of nail chambeies that are used for accomodating the sewing nail that are provided with of nail storehouse, and the nail storehouse body includes top terminal surface, is equipped with on the terminal surface by the nail chamber runs through the play nail mouth that top terminal surface formed. When suturing, the top end surface is contacted with the tissue to be sutured, and a cutting knife in the suturing instrument pushes a nail pushing piece in a nail bin to move upwards so that suturing nails in the nail bin are moved out of a nail cavity to be sutured (namely the suturing nails are taken out).

To prevent staples from backing out of the staple cavities during storage, transport, or assembly into the end effector of the surgical instrument, the cartridge protective cover of prior cartridge assemblies fully conforms to the cartridge body surface. The nail tips of the suturing nails are flush with the top end face of the nail bin body, the nail tips of the suturing nails are in contact with the nail bin protective cover, and the nail tips of the suturing nails are sharp, so that the nail tips of part of the suturing nails are slightly embedded into the nail bin protective cover due to extrusion or shaking and the like in the storage, transportation or assembly process of the nail bin assembly; as such, when the cartridge assembly is installed into the end effector of the surgical instrument and the cartridge protection cover is removed, the cartridge protection cover is disengaged from the cartridge body along with the staple sections. Therefore, when the wound of the patient is sutured, the wound can not be sutured effectively due to the loss of the partial suturing nail, so that the wound of the patient is bleeding, and the smooth operation and the wound healing of the postoperative patient are not facilitated.

Disclosure of Invention

The invention aims to provide a nail bin assembly capable of preventing suturing nails from falling off and a surgical instrument thereof, and the invention is realized by the following technical scheme:

a staple cartridge assembly comprising a staple cartridge body and a staple cartridge protective cover, the staple cartridge body comprising staple cavities and staples, at least a portion of the staples being disposed within the staple cavities; the nail bin protective cover comprises a baffle plate; the nail bin protective cover is detachably connected with the nail bin body; after the nail bin protective cover is connected with the nail bin body, a space is formed between the nail bin body and the separation baffle plate, and the space is used for preventing the separation baffle plate from contacting with the nail cavity.

Further, the nail bin protective cover further comprises a connecting portion and a blocking portion, the blocking portion and the connecting portion are located on the blocking plate, the connecting portion is used for detachably connecting the blocking plate and the nail bin body, and the blocking portion is used for forming the space between the blocking plate and the nail bin body.

Preferably, the height of the space is less than the height of the staple.

Preferably, the baffle plate is provided with a protrusion, and the protrusion forms the blocking part.

Preferably, the protrusion is a rectangular parallelepiped, an annular body, or a cylinder having a cross section other than a polygon.

Preferably, the cuboid comprises a bar.

Preferably, the blocking part and the baffle plate are integrally formed or fixedly connected or detachably connected.

Preferably, the baffle is provided with at least two blocking parts, and the at least two blocking parts are symmetrically arranged along the central axis of the baffle.

Preferably, the connecting portion includes a first hook portion and a second hook portion; the first clamping hook part is provided with a clamping hook, and the nail bin body is provided with a clamping groove matched with the clamping hook; the second hook part is perpendicular to the baffle.

Preferably, the thickness of the front end of the baffle is greater than the thickness of the rear end of the baffle.

Preferably, the blocking portion, the connecting portion and the baffle plate are integrally formed to form the cartridge protection cover.

Preferably, the connecting parts and the blocking parts are staggered on the baffle plate.

Preferably, the cartridge protection cover further comprises a positioning ridge, wherein the positioning ridge is positioned on the baffle plate and is perpendicular to the baffle plate.

Preferably, the positioning ridge is provided with reinforcing ribs, the reinforcing ribs are symmetrically distributed on two sides of the positioning ridge, and the reinforcing ribs on the same side of the positioning ridge are distributed at intervals.

Preferably, the staple cavities and the staples are each a plurality, and at least a portion of each staple is disposed within one of the staple cavities.

According to the nail bin assembly, the suturing nails can be well blocked in the nail bin body before being triggered, and the condition that the suturing nails are separated from the nail bin body due to extrusion or external force in the storage and transportation processes is avoided; meanwhile, the problem that when the nail bin assembly is assembled in an end effector of a surgical instrument and the nail bin protective cover is removed, part of the stitching nails can be separated from the nail bin body together with the nail bin protective cover is solved. Therefore, the nail bin assembly and the surgical instrument thereof can avoid the adverse effect on the operation and the patient caused by the abnormal separation of the suturing nail from the nail bin body, and can effectively suture the wound of the patient, thereby reducing the bleeding of the wound and being beneficial to the smooth operation and the healing of the wound of the patient after the operation.

Drawings

FIG. 1 is a schematic view of a staple cartridge assembly according to an embodiment of the present invention;

FIG. 2 is a schematic view of the cartridge module according to the embodiment of the present invention after removing the cartridge protection cover;

FIG. 3 is a partially exploded schematic view of a staple cartridge assembly according to an embodiment of the present invention;

FIG. 4 is a schematic view of a cartridge guard structure of a cartridge assembly according to one embodiment of the present invention;

FIG. 5 is a schematic structural view of a cartridge protection cover of a cartridge assembly according to another embodiment of the present invention;

FIG. 6 is a schematic structural view of a cartridge protection cover of a cartridge assembly according to a third embodiment of the present invention;

FIG. 7 is a schematic illustration of a staple configuration according to an embodiment of the present invention;

FIG. 8 is a schematic structural view of a first staple driver;

FIG. 9 is a schematic structural view of a second staple driver.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings.

Furthermore, 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 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.

As shown in fig. 1 to 3, a cartridge assembly 100 of the present invention comprises a cartridge body 1 and a cartridge protection cover 2, and further, the cartridge assembly 100 further comprises a staple cavity 12, staples 3, a staple driver 4, a staple pusher 5, a staple pusher slot 13 and a support 6. For convenience of description and simplicity of description, in the present embodiment, the directions near the cartridge insertion end 11 are referred to as "front" and "front end" based on the orientation or positional relationship shown in fig. 3; directions away from the cartridge insertion end 11 are referred to as "rear" and "rear end"; the direction of approach to the cartridge protection cover 2 is referred to as "up" and "upper face", the direction of approach to the support 6 is referred to as "down" and "lower face", and the linear direction of the motion trajectory of the staple pusher 5 is referred to as "length" direction.

In order to prevent the staples 3 from being separated from the cartridge body 1 from the upper ends of the staple cavities 12 due to squeezing or external force during storage and transportation, as shown in fig. 1, the cartridge protection cover 2 of the cartridge assembly 100 according to the embodiment of the present invention is detachably mounted on the cartridge body 1 before use. The staple cartridge assembly 100 is assembled into an end effector of a surgical instrument, as shown in FIG. 2, and the surgical stapling operation is performed after the end effector is closed after the cartridge protection cap 2 is removed.

An end effector of a surgical instrument includes a cooperating cartridge seat and an anvil pivotally coupled to the cartridge seat, the anvil having an open position and a closed position and being selectively movable between the open position and the closed position. The manner of attachment of the cartridge and anvil, as well as the positioning and attachment of the end effector to the cartridge assembly 100, are the same or similar to those of the prior art and will not be described in detail herein. When the staple holder is in the open position, the cartridge module 100 is loaded into the end effector of the surgical instrument, the cartridge protection cap 2 is removed, and the staple holder is closed. The staple holder is opened after the end effector of the surgical instrument is advanced into the patient, and the staple holder is closed and the end effector is closed when the target tissue is positioned between the staple cartridge receptacle and the staple holder of the end effector.

Referring to fig. 3, a plurality of through holes are vertically arranged in the nail bin body 1 in a penetrating manner, the through holes form a nail cavity 12, a part of the suturing nail driver 4 and the suturing nails 3 are located in the nail cavity 12, and a nail pushing block 5 is arranged at the rear end of the nail bin body 1. Since a portion of the staple driver 4 is disposed within the staple cavity 12, the staple cavity 12 defines that the staple driver 4 can only move up and down relative to the cartridge body 1, and the staple driver 4 and the staples 3 can only move up relative to the cartridge body 1 when the cam portions of the pusher 5 apply force to the guide surfaces of the staple driver 4. The supporting piece 6 is further arranged below the nail bin body 1, so that the suturing nail driver 4 can be prevented from being separated from the nail bin body 1, and the strength of the nail bin body 1 can be enhanced. The nail bin body 1 further comprises a top end surface 14 and a bottom end surface 15 arranged opposite to the top end surface 14, and the top end surface 14 and the bottom end surface 15 are parallel to each other; a nail bin protective cover 2 is arranged above the nail bin body 1. Under the premise that the end effector is closed, under the action of external force, the nail pushing block 5 moves from the rear end of the nail bin body 1 to the front end of the nail bin body 1, and the nail pushing block 5 pushes the suturing nail driver 4 to move upwards in the nail cavity 12 in the moving process, so that the suturing nail 3 moves upwards, pierces through the tissue of a patient, and the wound of the patient is sutured until the suturing nail 3 is separated from the nail cavity 12. How to open or close the end effector is the same as or similar to the prior art and will not be described in detail herein. Specifically, as shown in fig. 7, the staple 3 includes a pointed tip 31 and a fixed end 32, the pointed structure of the pointed tip 31 facilitates easier penetration of the staple 3 into the human tissue, and the fixed end 32 is linear and parallel to the tip surface 14. When unfired, staples 3 are positioned within staple cavities 12 with staple tips 31 flush with top end surface 14 of cartridge body 1, staples 3 are generally "U" shaped, and fixed ends 32 of staples 3 are positioned within staple driver 4.

The staple driver 4 comprises a staple containing groove 41 and a guide surface 42, the staple containing groove 41 is used for containing the fixed end 32 of the staple 3, and a staple containing groove 41 is also arranged in each staple cavity 12; that is, each staple cavity 12 is provided with one staple 3 and a corresponding staple accommodating groove 41. As shown in FIG. 9, each staple driver 4 may have a staple receiver 41 such that each staple driver 4 may receive a staple 3; alternatively, as shown in FIG. 8, there may be two staple containers 41 for each staple driver 4, such that each staple driver 4 can receive two staples 3. The structure of each staple driver 4 and the number of staple containing slots 41 can be varied as required to accommodate and push the staples 3, which is not illustrated here. Under the effect of external force, the nail pushing block 5 can move to the front end of the nail bin body 1 from the rear end of the nail bin body 1, in the moving process, the nail pushing face of the nail pushing block 5 is in contact with the guide face 42 of the suturing nail driver 4, the guide face 42 makes the suturing nail driver 4 move upwards after being stressed, then the suturing nail accommodating groove 41 is pushed to move upwards in the nail cavity 12, and then the suturing nail 3 in the nail cavity 12 is driven to move from the unfired position to the fired position. The support frame 6 is fixedly connected with the nail bin body 1 and used for supporting the suturing nail driver 4 and the nail pushing block 5 so as to prevent the suturing nail driver 4 or the nail pushing block 5 from being separated from the nail bin body 1 and enhance the strength of the nail bin body 1.

As shown in fig. 4 to 6, the cartridge protection cover 2 includes a baffle 21, a connecting portion and a blocking portion 24, wherein the connecting portion includes a first hook portion 22 and a second hook portion 23; the blocking portion 24, the first hook portion 22 and the second hook portion 23 are located on the blocking surface 211 of the blocking plate 21. The blocking surface 211 is at least provided with two blocking parts 24, and the blocking parts 24 are symmetrically arranged along the central axis of the blocking plate 21 and are uniformly arranged on the blocking surface 211. The first hook part 22 is further provided with a hook 221. The nail bin protective cover 2 comprises at least two first hook parts 22, the at least two first hook parts 22 are symmetrically arranged along the central axis of the nail bin protective cover 2, correspondingly, at least two clamping grooves 16 are arranged on the nail bin body 1, and the at least two clamping grooves 16 are symmetrically arranged along the central axis of the nail bin body 1; the hook 221 cooperates with the slot 16 to fix the baffle 21 on the nail bin body 1. The second hook part 23 is formed by extending downwards part of the edge of the baffle plate 21 and is perpendicular to the baffle plate 21, the nail bin protective cover 2 comprises at least two second hook parts 23, the two second hook parts 22 are symmetrically arranged along the central axis of the nail bin protective cover 2, and the distance between the two second hook parts 22 is approximately equal to the width of the upper surface of the nail bin body 1, so that the nail bin body 1 is fixed between the two second hook parts 23, the nail bin protective cover 2 is prevented from moving relative to the nail bin body 1, the nail bin protective cover 2 can be positioned and detachably connected with the nail bin body 1, and the nail bin protective cover is convenient to detach.

The insertion end 11 in front of the nail bin body 1 is wedge-shaped, the front end of the baffle plate 21 of the nail bin protective cover 2 is an inclined surface, the inclined surface is matched with the wedge-shaped insertion end 11, the clamping hook 221 of the first clamping hook part 22 is positioned at the front end of the baffle plate 21, and the clamping hook 221 is clamped with the clamping groove 16; the second clamping hook part 23 is in contact with the side face of the nail bin body 1, when the nail bin protective cover 2 needs to be taken down, the stress on the front end of the separation baffle plate 21 is large, the thickness of the front end of the separation baffle plate 21 is larger than that of the rear end of the separation baffle plate 21, and the design uses less materials to ensure that the strength of the separation baffle plate 21 meets the installation and disassembly requirements.

In order to facilitate the penetration of the tissue of the patient during the suturing, the tips 31 of the staples 3 are designed as sharp tips; when unfired, staples 3 are positioned within staple cavities 12 and the tips 31 of staples 3 are flush with top end surface 14 of cartridge body 1. The blocking part 24 is positioned on the blocking plate 21, specifically, the blocking part 24 is positioned on the blocking surface 211 and is perpendicular to the blocking surface 211, the height of the blocking part 24 is less than that of the suturing nail 3, and the blocking part can be well blocked in the nail bin body 1 when the suturing nail 3 is not fired; preferably, the height of the blocking part 24 is 0 < H < 1mm, while the height of the staples is 1.5 < H < 10mm, further, the height of the staples is 2 < H < 6 mm. The blocking part 24 and the blocking plate 21 are integrally formed, after the nail bin protection cover 2 is installed on the nail bin body 1, the blocking part 24 abuts against the top end surface 14 of the nail bin body 1, and therefore the blocking part 24 forms a space between the blocking plate 21 and the nail bin body 1, and the blocking plate 21 is effectively separated from the nail bin body 1. The situation that the nail tip 31 is sharp and is slightly embedded into the blocking surface 211 after contacting the blocking surface 211 due to extrusion or shaking and the like in the process of storage, transportation or assembly is avoided, and the situation that the nail bin protective cover 2 and part of the suturing nails 3 are separated from the nail bin body 1 together when the nail tip 31 is removed is avoided.

The blocking portion 24, the first hook portion 22, the second hook portion 23 and the baffle plate 21 are integrally formed to form the cartridge protection cover 2. The blocking parts 24, the first hook parts 22 and the second hook parts 23 are arranged on the blocking surface 211 of the blocking plate 21 in a staggered manner, that is, the blocking parts 24, the first hook parts 22 and the second hook parts 23 are not overlapped in the length direction of the blocking plate 21, so that the processing, molding and demolding are facilitated.

The baffle 211 is provided with a bulge which forms a blocking part 24; the blocking portion 24 is a cylinder or an elongated rectangular parallelepiped. According to an embodiment of the present invention, as shown in fig. 4, the blocking portion 24 is a rectangular parallelepiped, an annular body, or a cylinder whose cross section is not polygonal; in the present embodiment, the blocking portion 24 is a bar; or in another embodiment of the present invention, as shown in fig. 5 or fig. 6, the blocking portion 24 is a scattered protrusion, the protrusion is in a column shape, the cross section of the blocking portion 24 is in a circular shape, an oval shape or a polygonal shape, and preferably, the cross section of the blocking portion 24 is in a circular shape or a regular polygonal shape. The blocking part 24 is contacted with the solid position (the position except the nail cavity 12) of the top end surface 14 of the nail bin body 1, so that the blocking part 24 forms a space between the baffle plate 21 and the nail bin body 1 to ensure that all the needle points 3 are not contacted with the nail bin protective cover 2. When the nail bin protective cover 2 needs to be taken down, all the needle points 3 are not in contact with the nail bin protective cover 2, so that the condition that the nail bin protective cover 2 and part of the staples 3 are separated from the nail bin body 1 is effectively avoided.

In the fourth embodiment of the present invention, the cartridge assembly 100 further comprises an annular body (not shown) forming the blocking portion 24, the annular body being located between the cartridge body 1 and the cartridge protection cover 2; the height of the annular body is less than the height of the staples 3. The height of the annular body is more than 0 h₁Not more than 1mm, while the height of the anastomosis nail is not less than 1.5 and not more than 10mm, and further the height of the anastomosis nail is not less than 2 and not more than 6 mm. Firstly, fixedly connecting the annular body with the nail bin protective cover 2 in a common mode in the field, such as bonding, clamping and the like; the annular bodies are distributed along the edge of the baffle 211 and do not exceed the edge of the baffle 211, and then the cartridge protection cover 2 and the annular bodies are installed on the cartridge body 1 together. One surface of the annular body abuts against the baffle 21 of the cartridge protection cover 2, and the other surface of the annular body abuts against a solid position (a position excluding the staple cavity 12) of the top end surface 14 of the cartridge body 1, so that the space is formed between the cartridge body 1 and the baffle 211. The annular bodies are distributed continuously, and the annular bodies can also be formed by bulges distributed at intervals and can also be in other shapes. When it is needed to be taken downWhen the magazine cover 2 is removed, the annular body is removed together with the magazine cover 2. In this way, the blocking portion 24 forms a space between the blocking plate 21 and the magazine body 1, and all the needlepoints 3 are not in contact with the magazine protection cover 2, so that the situation that the magazine protection cover 2 and a part of the staples 3 are separated from the magazine body 1 when the magazine protection cover 2 is removed is effectively avoided.

The nail bin protection cover 2 further comprises a positioning ridge 25, the positioning ridge 25 is formed by extending downwards along the symmetrical shaft of the nail bin protection cover 2 and is perpendicular to the baffle plate 21, the positioning ridge 25 is inserted into the nail pushing groove 13 of the nail bin body 1, the height of the positioning ridge 25 is approximately equal to the depth of the nail pushing groove 13, furthermore, reinforcing ribs 251 are further arranged on two sides of the positioning ridge 25, and when the positioning ridge 25 is inserted into the nail pushing groove 13 of the nail bin body 1, the reinforcing ribs 251 are in contact with two sides of the nail pushing groove 13. On one hand, the nail bin protective cover 2 and the nail bin body 1 are pre-positioned, so that the nail bin protective cover 2 can be conveniently and accurately and quickly assembled on the nail bin body 1; on the other hand, the contact of the reinforcing ribs 251 with the two sides of the nail pushing groove 13 can enhance the fixing effect of the nail bin protective cover 2 and the nail bin body 1, so that the nail bin protective cover 2 is prevented from being separated from the nail bin body 1, the contact area of the reinforcing ribs 251 with the two sides of the nail pushing groove 13 is small, and the nail bin protective cover 2 is convenient to take down during use. The staple pushing groove 13, the staple pushing block 5 and the support 6 are prior art and will not be described in detail herein.

According to the nail bin assembly 100, the suturing nails 3 can be well blocked in the nail bin body 1 when not being triggered, and the condition that the suturing nails 3 are separated from the nail bin body 1 due to extrusion or external force in the storage and transportation processes is avoided; meanwhile, the problem that when the nail box assembly 100 is assembled in an end effector of a surgical instrument and the nail box protective cover 2 is removed, part of the nails 3 are taken up by the nail box protective cover 2 and are separated from the nail box body 1 together is solved. The nail bin assembly and the surgical instrument thereof have compact and reliable structure and convenient assembly, can effectively suture the wound of a patient, thereby reducing wound bleeding, and are beneficial to smooth operation and healing of the wound of the patient after the operation.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims

1. A staple cartridge assembly comprising a staple cartridge body and a staple cartridge protective cover, the staple cartridge body comprising staple cavities and staples, at least a portion of the staples being disposed within the staple cavities; the nail bin protective cover comprises a baffle plate;

the nail bin protective cover is characterized by further comprising a blocking part, the blocking part is positioned on the blocking plate, and the nail bin protective cover is detachably connected with the nail bin body; after the nail bin protective cover is connected with the nail bin body, the blocking surface of the blocking baffle is arranged opposite to the top end surface of the nail bin body, the blocking part is used for forming a space between the nail bin body and the blocking baffle, and the space is used for preventing the blocking baffle from contacting with the nail cavity.

2. The staple cartridge assembly of claim 1, wherein said staple cartridge protection cover further comprises a coupling portion disposed on said baffle for removably coupling said baffle to said staple cartridge body.

3. The staple cartridge assembly of claim 1, wherein said spaces have a height that is less than a height of said staples.

4. The staple cartridge assembly of claim 2, wherein said baffle has a protrusion thereon, said protrusion forming said barrier.

5. The staple cartridge assembly of claim 4, wherein said protrusions are cylindrical or punctiform protrusions.

6. The staple cartridge assembly of claim 5, wherein said cylinder is not polygonal in cross-section; the cross section of the punctiform protrusions is circular, oval or polygonal.

7. The staple cartridge assembly of claim 4, wherein said protrusion is a cuboid or an annular body, said cuboid comprising a bar.

8. The staple cartridge assembly of claim 2, wherein said blocking portion is integrally formed with or fixedly attached or removably attached to said baffle.

9. The staple cartridge assembly of claim 2, wherein said barrier has at least two said blocking portions, said at least two blocking portions being symmetrically disposed along a central axis of said barrier.

10. The staple cartridge assembly of claim 2, wherein said connecting portion comprises a first hook portion and a second hook portion; the first clamping hook part is provided with a clamping hook, and the nail bin body is provided with a clamping groove matched with the clamping hook; the second hook part is perpendicular to the baffle plate and is used for contacting with the side face of the nail bin body.

11. The staple cartridge assembly of claim 1, wherein said baffle front end has a thickness greater than a thickness of said baffle rear end.

12. The staple cartridge assembly of claim 2, wherein said blocking portion, said connecting portion and said barrier are integrally formed to form said staple cartridge protection cover.

13. The staple cartridge assembly of claim 2, wherein said connecting portions and said blocking portions are staggered on said baffle.

14. The staple cartridge assembly of claim 1, wherein said staple cartridge protection cover further comprises a positioning ridge located on and perpendicular to said baffle.

15. The staple cartridge assembly of claim 14, wherein said positioning ridge has ribs disposed thereon, said ribs being symmetrically disposed on opposite sides of said positioning ridge, said ribs being spaced apart on a same side of said positioning ridge.

16. The staple cartridge assembly of claim 1, wherein said staple cavities and said staples are a plurality, at least a portion of each said staple being disposed within one said staple cavity.