CN212394992U - A stapler cartridge and stapler - Google Patents

Abstract

The utility model discloses a stapler cartridge, which comprises a staple anvil, a staple cartridge assembly, a staple cartridge base and a fixing block part. The fixing block part comprises two mutually parallel supporting parts, and between the two supporting parts are arranged The knife groove of the cutting knife, the proximal end of the nail anvil base and the proximal end of the magazine base are movably hinged through the fixing block part, the nail magazine assembly is located between the nail anvil base and the nail magazine base, and the distal end of the fixing block part is provided with An identification mechanism for identifying whether the cartridge assembly is installed in the cartridge. The utility model adopts a staple cartridge with an identification mechanism, which ensures that it can identify whether the staple cartridge component of the endoscopic cutting stapler is installed on the staple cartridge main body of the endoscopic cutting stapler, and can effectively avoid misoperation, firing again or forgetting to replace the component. The medical malpractice caused by the re-fire greatly reduces the medical risk.

Description

A stapler cartridge and stapler

technical field

The utility model relates to the field of medical instruments, in particular to a stapler cartridge and a stapler used in laparoscopic surgery.

Background technique

In surgical operations, medical endoscopic cutting and stapler has become an indispensable auxiliary medical device in the process of human tissue suturing. With the development of medicine and product research and development, more and more multi-functional staple products are used in clinical practice, and the scope of application has involved gastrointestinal surgery, hepatobiliary surgery, thoracic surgery, urology, gynecology and other fields. One of the few tools. The application of endoscopic cutting stapler has many advantages, such as less bleeding during operation, shorter operation time, reduction of manual operation error, avoidance of infection, and fast postoperative functional recovery.

Laparoscopic cutting stapler and disposable staple cartridge are suitable for tissue resection, transection and anastomosis in abdominal, obstetrics, pediatric and thoracic surgery. It can also be used for resection and transection of liver parenchyma, liver vessels and gallbladder ducts.

The staple cartridge assembly of the existing endoscopic stapler cartridge is a one-time use and can be detachably installed in the staple cartridge. However, in practice, it often happens that the operator cannot identify whether the staple cartridge has been installed with the staple cartridge assembly. Because some operators are unfamiliar with staplers and do not know whether there is a staple cartridge assembly in the staple cartridge, the stapler that has fired the staple cartridge assembly will be used again, resulting in only cutting but not suturing during surgery. This action is undoubtedly Medical malpractice will occur during surgery, increasing the medical risk of the patient.

Utility model content

The technical problem to be solved by the utility model is to solve the technical problem in the prior art that it is impossible to identify whether the staple cartridge assembly is installed in the staple cartridge, so as to effectively avoid the stapler cartridge and the staple cartridge that is accidentally fired by the doctor during the operation. Stapler.

In order to solve the above-mentioned technical problem, the technical scheme that the utility model provides is as follows:

A stapler cartridge includes a staple anvil, a staple cartridge assembly, a staple cartridge base and a fixing block part, the fixing block part includes two mutually parallel supporting parts, and a cutting part is arranged between the two supporting parts the knife groove of the knife, the proximal end of the anvil seat and the proximal end of the magazine base are movably hinged through the fixing block part, and the nail magazine assembly is located between the anvil seat and the magazine base between, characterized by,

The distal end of the fixing block part is provided with an identification mechanism for identifying whether the cartridge assembly is installed in the cartridge.

In a further technical solution, the identification mechanism is slidably disposed at the distal end of the fixed block component;

When the staple cartridge assembly is installed in the staple cartridge, the identification mechanism moves away from its initial position and slides toward the proximal end of the fixing block member, and the distal end of the identification mechanism abuts against the proximal end of the staple cartridge assembly catch;

When the cartridge assembly is not installed in the magazine, the identification mechanism remains in its original position.

In a further technical solution, the identification mechanism includes an elastic part, a sliding part, and a locking part;

The distal end of the elastic member is connected with the proximal end of the sliding member, and the sliding member provides a driving force to act on the elastic member under the driving of the staple cartridge assembly;

The protrusions of the inner side wall of the sliding member cooperate with the limiting portions of the outer side wall of the locking member, so that the locking member can realize locking and opening and closing actions.

In a further technical solution, the identification mechanism further includes a fixing member, the fixing member can fix the locking member, so that the locking member can be axially rotated about the fixing member to realize locking and unlocking. combined action.

In a further technical solution, the end surfaces of the distal ends of the two supporting parts of the fixed block member are both provided with a groove, respectively accommodating one of the elastic members, and the depth of the groove is greater than the length of the elastic member;

One end of the elastic member is located at the bottom of the groove, and the other end of the elastic member is connected to the sliding member;

The two grooves are both provided with an opening, respectively accommodating one of the locking components, and the depth of the opening is greater than the length of the locking component;

When the staple cartridge assembly is not installed in the staple cartridge, the sliding member is in an initial position, and the locking member is in a locked state, preventing the cutting knife from sliding in the knife groove;

When the staple cartridge assembly is installed in the staple cartridge, the sliding member slides in the direction of the elastic member, and the locking member is opened and closed under the action of the sliding member, allowing the cutting knife to move in the direction of the elastic member. slide in the slot.

In a further technical solution, the elastic member is a compression spring or an elastic sheet.

In a further technical solution, the sliding member is a sliding rod, the sliding rod is provided with a sliding rod protrusion, the locking member is a locking hook, one end of the locking hook is provided with a hook, and the locking hooks on both sides of the knife groove are provided with a hook. The hook of the sliding rod cooperates with the protrusion of the sliding rod to realize the closing and opening and closing actions.

In a further technical solution, the fixing member is a pin, the proximal end of the retracting hook is provided with a through hole, and the pin is inserted into the through hole for fixing the retracting hook, and the pin is used as the axis to carry out the operation. turn.

In a further technical solution, the lock hook is provided with a first limit portion and a second limit portion. When the lock hook rotates in the circumferential direction with the pin as the axis, the first limit of the lock hook is set. The tangential surface formed by the sliding rod protrusion and the second limiting part slides with the sliding rod protrusion as the axis.

The technical problem to be solved by the present utility model is to provide a stapler, which solves the technical problem that the stapler cannot identify whether the staple cartridge component is installed in the staple cartridge in the prior art, and effectively avoids the inadvertent operation of the stapler by the doctor during the operation. Misfired staple cartridge and stapler.

In order to solve the technical problem, the present invention also provides a stapler, including the staple cartridge of the stapler.

After adopting such a design, the utility model at least has the following advantages:

(1) The utility model adopts a staple cartridge with an identification mechanism, which ensures that it can identify whether the staple cartridge assembly of the endoscopic cutting stapler is installed on the staple cartridge main body of the endoscopic cutting stapler, and can effectively avoid firing again or forgetting to replace the component. The medical malpractice caused by the re-fire greatly reduces the medical risk.

(2) The present utility model adopts the way that the sliding part and the locking part want to cooperate to limit the sliding of the cutting knife in the knife groove, which can effectively avoid the occurrence of misoperation of the operator.

(3) The utility model has the advantages of simple structure, good effect, low cost and easy process realization.

Description of drawings

The above is only an overview of the technical solutions of the present invention. In order to understand the technical means of the present invention more clearly, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

Fig. 1 is the structural schematic diagram of the nail box of the present utility model;

Fig. 2 is the structural schematic diagram of the fixed block part of the present invention;

Figure 3 is a schematic diagram of the cross-sectional structure of the fixed block component of the present invention;

4 is a schematic diagram of the installation of the fixed block component and the identification mechanism in an embodiment of the present invention;

5 is a schematic structural diagram of an identification mechanism in an embodiment of the present invention;

6 is a schematic diagram of the position of the identification mechanism when the staple cartridge is installed in an embodiment of the present invention;

7 is a schematic diagram of the position of the identification mechanism when the staple cartridge is disassembled according to an embodiment of the present invention;

FIG. 8 is an exploded schematic diagram of the identification mechanism in an embodiment of the present invention;

9 is a schematic diagram of an identification mechanism in an embodiment of the present invention;

10 is a schematic structural diagram of a sliding rod in an embodiment of the present invention;

11 is a schematic view of the structure of the lock hook in an embodiment of the present invention;

in,

1 is the nail anvil, 2 is the nail magazine assembly, 3 is the nail box base, 4 is the fixing block part, 41 is the support part, 42 is the groove, 43 is the opening, 44 is the first hole, 45 is the second hole, 5 is the identification mechanism, 51 is the spring, 52 is the sliding rod, 521 is the protrusion of the sliding rod, 53 is the lock hook, 531 is the first limit part, 532 is the second limit part, 533 is the hook, 54 is the lock hook Holes, 55 are pins, 6 are cutting knives, and 61 are knife grooves.

Detailed ways

The preferred embodiments of the present utility model will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present utility model, but not to limit the present utility model.

Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that the present invention can be more thoroughly understood, and will fully convey the scope of the present invention to those skilled in the art.

In various embodiments of the present invention, the "distal end" refers to the end of the stapler away from the user when it is operated, and the "proximal end" refers to the end of the stapler that is close to the user when it is operated.

As shown in FIGS. 1 to 11 , in the embodiment of the present invention, a stapler cartridge is provided, including a staple anvil 1 , a staple cartridge assembly 2 , a staple cartridge base 3 and a fixing block part 4 , the fixing block part 4 It includes two mutually parallel support parts 41 , between which there is a knife slot 61 for the cutting knife 6 , and the proximal end of the nail abutting seat 1 and the proximal end of the magazine base 3 are movably hinged through the fixing block part 4 , the staple cartridge assembly 2 is located between the staple anvil 1 and the staple cartridge base 3, and the distal end of the fixing block part 4 is provided with an identification mechanism 5 for identifying whether the staple cartridge assembly 2 is installed in the staple cartridge.

Here, the staple cartridge assembly 2 is detachably connected with the fixing block part 4 .

The identification mechanism 5 is slidably disposed at the distal end of the fixed block member 4 .

The initial position of the identification mechanism 5 in this embodiment is defined as the position of the identification mechanism 5 when the magazine assembly is not installed.

When the staple cartridge assembly 2 is installed in the staple cartridge, the staple cartridge assembly 2 squeezes the initial position of the identification mechanism 5, so that the identification mechanism 5 moves away from its initial position and slides toward the fixed block part 4, and the distal end of the identification mechanism 5 is connected to the staple cartridge assembly 2. The proximal end of the abutment is abutted, so as to identify the staple cartridge assembly 2;

When the staple cartridge assembly 2 is not installed in the magazine, the distal end of the identification mechanism 5 cannot abut with the staple cartridge assembly 2, and the identification mechanism 5 remains at its initial position.

In the embodiment of the present invention, the identification mechanism 5 includes an elastic part, a sliding part, and a locking part.

The distal end of the elastic part is connected with the proximal end of the sliding part, and the sliding part gives a driving force to act on the elastic part under the driving of the staple cartridge assembly 2; The locking part realizes locking and opening and closing actions.

Specifically, when the staple cartridge assembly 2 is installed in the staple cartridge, due to the existence of the staple cartridge assembly 2, the initial position of the sliding member is squeezed, so that the sliding member gives way to the staple cartridge assembly 2, and the sliding member slides in the direction of the elastic member. A driving force is given to the elastic part to make the elastic part store energy; the side wall of the sliding part close to the knife slot 61 is provided with a protrusion that is run-in with the locking part, and there is a sliding part and a locking part on each side of the knife groove 61 , due to the sliding of the sliding parts on both sides of the knife groove 61 , the locking parts on both sides of the knife groove 61 are driven away from the direction of the knife groove, so that the locking parts are in an open and closed state, allowing the cutting knife 6 to slide in the knife groove 61 .

When the staple cartridge assembly 2 is disassembled from the staple cartridge, due to the removal of the staple cartridge assembly 2, the initial position of the sliding member is freed, and the elastic member releases energy, so that the sliding member slides back to its initial position; The tightening member has a running-in relationship, and the sliding of the sliding member drives the locking members on both sides of the knife groove 61 to rotate in opposite directions, so that the locking members are in a closed state and prevent the cutting knife 6 from sliding in the knife groove 61 .

In the embodiment of the present invention, the identification mechanism 5 further includes a fixing member, which can fix the locking member, so that the locking member can be axially rotated about the fixing member to realize locking and opening and closing actions.

Here, at least one groove 42 is provided on the distal end surfaces of the two supporting portions 41 of the fixed block member 4, respectively, to accommodate an elastic member, and the depth of the groove is greater than the length of the elastic member.

In the embodiment of the present invention, a groove 42 is provided on the end surfaces of the distal ends of the two supporting portions 41 of the fixing block member 4 . The grooves 42 in the two support parts 41 need to exist in pairs, and the number of the grooves 42 is not limited, and multiple grooves 42 can be set in the two support parts 41 as required, which will not be repeated here.

Here, the position of the groove 42 is closer to the side of the cutter groove 61 .

In the embodiment of the present invention, the diameter of the groove 42 needs to be larger than the diameter of the elastic member, that is, the elastic member is arranged in the groove 42 .

One end of the elastic member is located at the bottom of the groove 42, and the other end of the elastic member is connected to the sliding member. The diameter of the groove 42 needs to be larger than that of the sliding member, that is, the groove 42 needs to accommodate at least part of the sliding member.

In the embodiment of the present invention, a part of the length of the sliding member is located in the groove 42 . As required, the entire sliding component is located in the groove, which is not repeated here.

In the present invention, there is no gap in the side wall of the groove 42, and the diameter of the groove needs to be larger than the outer diameter of the elastic member.

Preferably, in the present invention, the grooves 42 of the support parts 41 are open grooves, that is, the grooves 42 of the two support parts 41 are both provided with an opening 43, respectively accommodating a locking member, and the depth of the opening 43 is greater than that of the locking member. and the depth of the opening 43 is smaller than the depth of the groove 42, the height of the opening 43 is greater than the height of the locking member, and the end surface of the opening 43 can support the locking member.

Here, the position of the opening 43 is on the side of the chisel groove of the cutting blade, which is convenient for accommodating the locking member.

In the embodiment of the present invention, the thickness of the opening 43 is not limited, as long as it can ensure that the locking member can be supported.

Here, when the staple cartridge assembly 2 is not installed in the magazine, the locking member is in a closed state, preventing the cutting knife 6 from sliding in the knife slot 61; when the staple cartridge assembly 2 is installed in the magazine, the locking member is in an open state, The cutting knife 6 is allowed to slide in the knife groove 61 .

Specifically, in the embodiment of the present invention, the elastic component is a spring 51, the sliding component is a sliding rod 52, the locking component is a lock hook 53, the fixing component is a pin 55, and the two supporting parts of the fixing block component are respectively provided with a spring 51, A sliding rod 52 , a locking hook 53 , and a pin hole 55 .

The sliding rod 52 is provided with a sliding rod protrusion 521 on the side of the sliding rod 52 in the direction of the knife groove. The protrusion 521 is a smooth arc-shaped protrusion, so that the sliding rod 52 has an E-shaped structure.

One end of the lock hook 53 is provided with a hook 533, and the hooks 533 of the lock hook 53 on both sides of the knife groove cooperate to realize the closing and opening and closing actions.

Specifically, when the opening and closing action is realized, the hooks 533 on both sides of the knife groove 61 are separated from each other, and the distance between the two hooks 533 is greater than the width of the knife groove 61, so that the cutting knife 6 slides in the knife groove 61. When the closing action is realized When the hooks 533 on both sides of the knife groove 61 are close to each other, the distance between the two hooks 533 is smaller than the width of the knife groove 61 , and the cutting knife 6 cannot slide in the knife groove 61 .

The other end of the lock hook 53 is an arc-shaped end surface. A lock hook hole 54 is provided on the side of the arc-shaped end face of the lock hook 53 , a first hole 44 is also formed on the end faces of the two support parts 41 of the fixed block member 4 , and a second hole 45 is also formed on the end face of the opening 43 . 44. The lock hook hole 54 and the second hole 45 are coaxial holes, and the pin 55 is fixed at the second hole 45 after passing through the first hole 44 and the lock hook hole 54 respectively.

Here, the diameter of the pin 55 is smaller than the diameter of the lock hook hole 54 , so that the lock hook 53 can rotate circumferentially around the pin 55 .

A first limiting portion 531 and a second limiting portion 532 are provided on the side of the locking hook 53 close to the groove of the cutting knife, and the concave surface between the first limiting portion 531 and the second limiting portion 532 forms a force transmission surface. The force transmission surface cooperates with the protrusion 521 of the sliding rod 52 to complete the force transmission effect, so that the locking hook 53 can realize the closing and opening and closing actions.

Here, the height of the sliding protrusion 521 of the sliding rod 52 is higher than the height of the first limiting portion 531 and the height of the second limiting portion 532 of the locking hook 53 .

According to needs, the height of the first limiting portion 531 and the height of the second limiting portion 532 of the locking hook 53 may be different, or may be the same, which is not limited herein.

Specifically, in the initial state, the staple cartridge assembly 2 is not installed in the staple cartridge, the spring 51 is in the initial state and is not compressed, and one end of the spring 51 at both ends of the knife groove 61 abuts against the bottom of the groove 42 of the support portion 41 respectively, The other end of the spring 51 is connected to the sliding rod 52 , and the proximal end protrusion of the sliding rod 52 is used to define the first limiting portion 531 of the locking hook 53 , and the first limiting portion 531 is limited to protrude and slide at the proximal end of the sliding rod 52 . Sliding between the lever protrusions 521, the lock hook 53 rotates circumferentially around the pin 55 in the lock hook hole 54, so that the second limit portion 532 of the lock hook 53 is located on the sliding lever protrusion 521. Here, the sliding The end surface of the lever protrusion 521 may be a flat surface or a concave-convex surface, as long as the second limiting portion 532 of the locking hook 53 can be supported. Because the second limiting portion 532 of the locking hook 53 is located on the protrusion 521 of the sliding rod 52, the hooks 533 of the locking hook 53 at both ends of the knife groove 61 are close to each other, and the distance between the two locking hook hooks 533 is smaller than the groove width of the knife groove 61, The cutting knife 6 is locked by the locking hook 53, when the cutting knife 6 slides along the knife groove 61, the cutting knife 6 pushes the locking hook 533, the locking hook 53 slides to the far end under the pushing of the cutting knife, and the locking hook 53 The first limit portion 531 of the lock hook moves to the proximal end of the sliding rod protrusion 521. Due to the blocking effect of the sliding rod protrusion 521, the lock hook 53 cannot continue to move, and the second limit portion 531 of the lock hook is located on the sliding rod protrusion. On the end face of 521, the cutting knife 6 cannot slide to the distal end in the knife groove 61, so that the stapler under the endoscopic stapler cannot be fired when the staple cartridge assembly 2 is not installed, effectively increasing the number of staples in the stapler under the endoscope. safety in use.

Here, the sliding protrusion 521 of the sliding rod 52 can be accommodated between the first limiting portion 531 and the second limiting portion 532 of the locking hook 53 .

The distance between the proximal protrusion of the sliding rod 52 and the sliding rod protrusion 521 is smaller than the width of the end surface of the sliding rod protrusion 521, so as to ensure that when the cutting knife 6 pushes the locking hook 53 to slide, the locking hook 53 can be closed to prevent the cutting knife 6 Swipe.

When the staple cartridge assembly 2 is installed in the staple cartridge, the staple cartridge assembly 2 occupies the position of the sliding rod 52, so that the sliding rod 52 leaves its initial position and slides in the direction of the spring 51, so that the spring 51 is compressed, and stored energy is obtained. One end of the spring 51 at the two ends of the knife slot 61 respectively abuts against the bottom of the groove 42 of the support part 41 , and the other end of the spring 51 is connected with the sliding rod 52 . The pin 55 rotates circumferentially as an axis, the second limit portion 532 of the lock hook 53 is separated from the sliding rod protrusion 521, the first limit portion 531 of the lock hook 53 is close to the position near the sliding rod protrusion 521, and the knife groove The lock hooks 53 and the hooks 533 of the sliding rod 52 at both ends of 61 are far away from each other, and the distance between the two lock hooks 53 is greater than the groove width of the knife groove 61, so that the cutting knife 6 is unlocked by the lock hook 53, and can slide to the distal end in the knife groove 61 , so as to achieve the normal firing of the stapler cartridge under the endoscope.

The force transmission surface between the first limiting portion 531 and the second limiting portion 532 may be a conical surface, or may be other shapes such as a trapezoidal surface, as long as the shape can achieve smooth force transmission.

When the staple cartridge assembly 2 is removed from the staple cartridge, the staple cartridge assembly 2 leaves the position of the sliding rod 52, so that the sliding rod 52 slides toward its initial position, so that the spring 51 is stretched, the stored energy is released, and the knife groove 61 One end of the spring 51 at both ends abuts against the bottom of the groove 42 of the support portion 41 respectively, and the other end of the spring 51 is connected with the sliding rod 52. Due to the sliding of the sliding rod 52, the second limiting portion 532 of the locking hook 53 returns to the sliding rod On the end face of the protrusion 521 , the first limiting portion 531 of the locking hook 53 is away from the position near the protrusion 521 of the sliding rod, the locking hooks 53 of the sliding rod 52 at both ends of the knife groove 61 are close to each other, and the distance between the two locking hooks 53 is smaller than that of the knife groove 61 The cutting blade 6 is locked by the locking hook 53, and the cutting blade 6 cannot slide to the distal end in the blade groove 61.

In the present invention, the length of the hook 533 of the locking hook 53 needs to be greater than half the width of the cutting knife 6. When the hooks 533 of the locking hook 53 on both sides of the knife groove 61 are close together, the area formed by the two hooks 533 can be ensured. Holds cutting knives.

Here, when the lock hook 53 rotates in the circumferential direction with the pin 55 as the axis, the tangent surface formed by the first limit portion 531 and the second limit portion 532 of the lock hook 53 slides with the sliding rod protrusion 521 as the axis.

In the embodiment of the present invention, when the first limiting portion 531 and the second limiting portion 532 of the locking hook 53 are rotated by the sliding lever protrusion 521 , it is ensured that the sliding lever protrusion 521 is on the first limiting portion of the locking hook 53 . 531 and the second limiting portion 532 rotate within the limiting portion. The lengths of the first limiting portion 531 and the second limiting portion 532 of the lock hook may be the same or different, which are not limited herein.

Of course, in the embodiment of the present invention, the elastic component may also be an elastic member or other mechanism components capable of providing energy storage, which will not be repeated here.

Specifically, in the embodiment of the present invention, the sliding component is a sliding rod.

The utility model also discloses a stapler comprising the staple cartridge.

After adopting such a design, the utility model at least has the following advantages:

(1) The utility model adopts a staple cartridge with an identification mechanism to ensure that it can identify whether the staple cartridge assembly of the endoscopic cutting stapler is installed on the staple cartridge main body of the endoscopic cutting stapler, which can effectively avoid misoperation, re-fire or Forgetting to replace components triggers medical malpractice again, greatly reducing medical risks.

(2) The present utility model adopts the way that the sliding part and the locking part want to cooperate to limit the sliding of the cutting knife in the knife groove, which can effectively avoid the occurrence of misoperation of the operator.

(3) The utility model has the advantages of simple structure, good effect, low cost and easy process realization.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention in any form. Those skilled in the art make some simple modifications, equivalent changes or modifications by using the technical contents disclosed above. within the scope of protection of the present invention.

Claims (10)

1. A stapler nail box comprises a nail abutting seat, a nail box component, a nail box base and a fixed block component, wherein the fixed block component comprises two supporting parts which are parallel to each other, a cutter groove of a cutter is arranged between the two supporting parts, the near end of the nail abutting seat is movably hinged with the near end of the nail box base through the fixed block component, the nail box component is positioned between the nail abutting seat and the nail box base,

and the far end of the fixed block component is provided with an identification mechanism for identifying whether the nail bin assembly is installed in the nail box.

2. The stapler cartridge of claim 1, wherein the identification mechanism is slidably disposed at a distal end of the fixation block member;

when the nail bin assembly is installed in the nail box, the identification mechanism departs from the initial position and slides towards the proximal direction of the fixed block component, and the distal end of the identification mechanism is abutted against the proximal end of the nail bin assembly;

when the staple cartridge assembly is not installed in the staple cartridge, the identification mechanism remains in its initial position.

3. The stapler cartridge of claim 2, wherein the identification mechanism includes an elastic member, a sliding member, a locking member;

the far end of the elastic component is connected with the near end of the sliding component, and the sliding component gives out driving force to act on the elastic component under the driving of the nail bin assembly;

the bulges on the inner side wall of the sliding component are matched with the limiting parts on the outer side wall of the locking component, so that the locking component realizes locking and opening and closing actions.

4. The stapler cartridge of claim 3, wherein the identification mechanism further comprises a securing member configured to secure the locking member such that the locking member is axially rotatable about the securing member to effect the locking and opening and closing actions.

5. The stapler cartridge of claim 3,

the end faces of the distal ends of the two supporting parts of the fixing block component are respectively provided with a groove for accommodating one elastic component, and the depth of each groove is greater than the length of the elastic component;

one end of the elastic component is positioned at the bottom of the groove, and the other end of the elastic component is connected with the sliding component;

the two grooves are respectively provided with an opening for accommodating one locking component, and the depth of the opening is greater than the length of the locking component;

when the nail box is not provided with the nail box assembly, the sliding part is in an initial position, and the locking part is in a locking state and prevents the cutting knife from sliding in the knife groove;

when the nail box is provided with the nail bin assembly, the sliding part slides towards the elastic part, and the locking part is in an opening and closing state under the action of the sliding part, so that the cutting knife is allowed to slide in the knife groove.

6. The stapler cartridge of claim 3, wherein the elastic member is a compression spring or an elastic sheet.

7. The stapler cartridge of claim 3, wherein the sliding member is a sliding rod provided with a sliding rod protrusion, the locking member is a locking hook provided with a hook at one end thereof, and the hooks of the locking hook at both sides of the knife slot are engaged with the sliding rod protrusion to perform closing and opening actions.

8. The stapler cartridge of claim 7, wherein the fixing member is a pin, and the proximal end of the draw hook is provided with a through hole, and the pin is fitted into the through hole to fix the draw hook and rotate around the pin.

9. The stapler cartridge according to claim 8, wherein the locking hook is provided with a first stopper portion and a second stopper portion, and when the locking hook is rotated in a circumferential direction about the pin, a cut surface formed by the first stopper portion and the second stopper portion of the locking hook slides about the protrusion of the sliding bar.

10. A stapler comprising a magazine according to any one of claims 1-9.

Images