Cutting knife connecting mechanism of staple cartridge assembly with knife

Abstract

The utility model discloses a cutting knife connecting mechanism of a nail bin assembly with a knife, which comprises a cutting knife connecting mechanism main body, the cutting knife connecting mechanism main body comprises a nail bin seat, the upper surface of the nail bin seat is provided with a nail bin main body in a clamping way, and one end inside the nail bin main body is provided with a cutting knife body; by designing the connecting mechanism, during use, when the staple cartridge main body is arranged in the staple cartridge base for percussion, the knife rest moves forwards, after the knife rest makes contact with the connecting elastic piece at the rear end of the cutting knife body, the connecting elastic piece slightly elastically deforms to clamp the end of the connecting elastic piece and the bent piece into the clamping groove in the knife rest, and after connection is completed, the knife rest continues to be driven to move forwards for anastomosis cutting; the cutter rest retreats when the cutter rest retreats to the tail end after being triggered in place, and when the cutter rest retreats to the tail end, the connecting elastic piece rebounds to be disconnected, the cutter rest continues to retreat in place, and therefore when the cutter connecting mechanism body is used, connection, cutting and retreating operation can be conveniently achieved on the cutter body.

Description

Technical Field

[0001] The utility model belongs to the technical field of cutting tool connection mechanisms, and particularly relates to a cutting tool connection mechanism with a knife nail magazine assembly. Background Art

[0002] The nail magazine assembly is a medical device used for cutting operations installed on a laparoscopic stapler. When in use, a cutting tool needs to be installed inside the nail magazine assembly. Usually, a connection mechanism is used to connect the cutting tool. The existing connection mechanism is a connection device for installing the cutting tool inside the nail magazine assembly. When the connection mechanism installs the cutting tool, it is convenient to connect the cutting tool body and perform cutting and retraction operations. At the same time, it is convenient to replace after one use, improving the effect of the connection mechanism on installing the cutting tool on the knife nail magazine for replacement and realizing cutting and retraction.

[0003] In the existing same type of laparoscopic stapler, the cutting tool and the knife holder are welded together and assembled on the laparoscopic body. After repeated use of cutting several times during surgery, the sharpness of the cutting edge will decrease, making it inconvenient to frequently replace the cutting tool after use. At the same time, it is not convenient to realize the functions of cutting and retraction, affecting the effect of the connection mechanism on installing the cutting tool on the knife nail magazine for replacement and realizing cutting and retraction. For this reason, the utility model proposes a cutting tool connection mechanism with a knife nail magazine assembly. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a cutting tool connection mechanism with a knife nail magazine assembly to solve the problems mentioned in the above background art, that is, in the existing same type of laparoscopic stapler, the cutting tool and the knife holder are welded together and assembled on the laparoscopic body. After using for a period of time, the sharpness of the cutting edge will decrease, making it inconvenient to frequently replace the cutting tool after use. At the same time, it is not convenient to realize the functions of cutting and retraction, affecting the effect of the connection mechanism on installing the cutting tool on the knife nail magazine for replacement and realizing cutting and retraction.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A cutting tool connection mechanism with a knife nail magazine assembly, including a main body of the cutting tool connection mechanism. The main body of the cutting tool connection mechanism includes a nail magazine seat. A nail magazine main body is snap-fitted on the upper surface of the nail magazine seat. One end inside the nail magazine main body is provided with a cutting tool body. One end of the cutting tool body is provided with an inclined cutting body. The main body of the cutting tool connection mechanism is further provided with:

[0006] A connection mechanism, and the connection mechanism includes an installation component arranged at the end of the cutting tool body, and a connection component is arranged inside the installation component;

[0007] A reinforcement installation mechanism, and the reinforcement installation mechanism includes a penetration component arranged at one end of the connection component, and a rotation reinforcement component is arranged inside the penetration component.

[0008] Preferably, the installation component includes a tool holder disposed at the other end of the cutting tool body, and an installation groove is formed on the surface of one end of the cutting tool body.

[0009] Preferably, the installation groove and the cutting tool body are of an integral structure, and the end of the cutting tool body is in conformity with the internal structure of the tool holder.

[0010] Preferably, the connection component includes a connection elastic piece disposed inside the installation groove. A bent piece is integrally formed at the end of the connection elastic piece, and a clamping groove is formed inside the tool holder.

[0011] Preferably, one end inside the clamping groove is of a rectangular structure, and the end of the bent piece is in contact with the inner surface of the clamping groove.

[0012] Preferably, the penetration component includes three through holes formed at one end of the connection elastic piece, and the through holes and the connection elastic piece are of an integral structure.

[0013] Preferably, the rotation reinforcement component includes a bolt penetrating through the through hole. An internal hexagonal groove is formed at one end of the bolt, and an internal threaded hole is formed at the bottom end inside the installation groove. The end of the through hole is matched with the internal structure of the internal threaded hole.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] By designing the connection mechanism, during use, when the staple cartridge body is loaded into the staple cartridge seat for firing, the tool holder moves forward. After contacting the connection elastic piece at the rear end of the cutting tool body, the connection elastic piece undergoes a small amount of elastic deformation, and the end of the connection elastic piece and the bent piece are clamped into the clamping groove on the tool holder to complete the connection. Then, it continues to drive the forward movement for matching cutting. When it retreats after firing in place, the tool holder retreats. When it retreats to the end, the connection elastic piece rebounds to disconnect the connection, and the tool holder continues to retreat in place. Therefore, it is convenient for the connection mechanism body of the cutting tool to connect the cutting tool body during use and perform cutting and retreat operations. At the same time, it is convenient for replacement after one use, and the cutting tool is installed on the staple cartridge with knife to achieve the effects of replacement, cutting, and retreat. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a structural schematic diagram of the present utility model;

[0017] Figure 2 is a partial structural schematic diagram of the cutting tool body, staple cartridge seat, and staple cartridge body of the present utility model;

[0018] Figure 3 is a structural schematic diagram of the cutting tool body, tool holder, and connection elastic piece in an open state of the present utility model;

[0019] Figure 4Schematic diagram of the connection state structure of the cutting tool body, tool holder and connecting elastic sheet of the present utility model;

[0020] Figure 5 Schematic diagram of the forward movement cutting operation structure of the staple cartridge seat, staple cartridge body and cutting tool body of the present utility model;

[0021] Figure 6 For the present utility model Figure 4 Enlarged structure schematic diagram of part A in;

[0022] Figure 7 Schematic diagram of the side cross-section structure of the bolt, cutting tool body and connecting elastic sheet of the present utility model;

[0023] In the figure: 100, main body of the cutting tool connection mechanism; 101, staple cartridge seat; 102, staple cartridge body; 103, cutting tool body; 1031, tool holder; 1032, connecting elastic sheet; 1033, card slot; 1034, installation groove; 1035, bending part; 1036, bolt; 1037, internal hexagonal groove; 1038, internal thread hole; 1039, through hole; 104, bevel cutting body. Specific implementation manners

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0025] Please refer to Figures 1 to 7 , the present utility model provides a technical solution: a cutting tool connection mechanism for a stapler cartridge assembly with a knife, including a main body 100 of the cutting tool connection mechanism. The main body 100 of the cutting tool connection mechanism includes a staple cartridge seat 101. A staple cartridge body 102 is snap-fitted and installed on the upper surface of the staple cartridge seat 101. One end inside the staple cartridge body 102 is provided with a cutting tool body 103. One end of the cutting tool body 103 is provided with a bevel cutting body 104. The following are also provided on the main body 100 of the cutting tool connection mechanism:

[0026] A connection mechanism, and the connection mechanism includes an installation component arranged at the end of the cutting tool body 103. A connection component is arranged inside the installation component. When the main body 100 of the cutting tool connection mechanism is in use, the cutting tool body 103 can be quickly connected and closed with the tool holder 1031 inside the staple cartridge body 102, facilitating the connection, cutting and retraction operations of the cutting tool body 103 when the main body 100 of the cutting tool connection mechanism is in use. At the same time, it is convenient for replacement after one use, and the effects of replacing the cutting tool body 103 on the staple cartridge body 102 and realizing cutting and retraction are achieved.

[0027] To facilitate the installation of the connecting elastic piece 1032 through the installation component and make it convenient for installation and use, in this embodiment, preferably, the installation component includes a tool holder 1031 provided at the other end of the cutting tool body 103. An installation groove 1034 is formed on the surface of one end of the cutting tool body 103. The connecting elastic piece 1032 can be installed by closing the end of the connecting elastic piece 1032 inside the installation groove 1034, which is convenient for quickly installing and connecting the tool holder 1031 for use.

[0028] To facilitate the quick connection of the cutting tool body 103 and the tool holder 1031 through the connecting component, facilitate the forward cutting operation, and at the same time facilitate the rebound and replacement. In this embodiment, preferably, the connecting component includes a connecting elastic piece 1032 provided inside the installation groove 1034. A bending piece 1035 is integrally formed at the end of the connecting elastic piece 1032, which is easy to elastically connect by the connecting elastic piece 1032 and the bending piece 1035. A clamping groove 1033 is formed inside the tool holder 1031, and the end of the bending piece 1035 contacts the inner surface of the clamping groove 1033. When the connecting elastic piece 1032 undergoes a small amount of elastic deformation, the end of the connecting elastic piece 1032 and the bending piece 1035 are clamped into the clamping groove 1033 on the tool holder 1031, which is convenient for completing the connection and is also convenient for quick retraction and replacement after cutting.

[0029] A reinforcement installation mechanism, and the reinforcement installation mechanism includes a penetrating component provided at one end of the connecting component. A rotary reinforcement component is provided inside the penetrating component. When the cutting tool connection mechanism main body 100 is installed and used, after the connecting elastic piece 1032 is clamped inside the installation groove 1034, the reinforcement installation mechanism strengthens and fixes the connecting elastic piece 1032, improving the strengthening and fixing property and the use stability when the cutting tool connection mechanism main body 100 closes on the surface of the staple cartridge main body 102 after installing the cutting tool body 103.

[0030] To facilitate the installation and rotation operation of the bolt 1036 through the penetrating component, in this embodiment, preferably, the penetrating component includes three through holes 1039 formed at one end of the connecting elastic piece 1032. The through holes 1039 and the connecting elastic piece 1032 are of an integral structure. The bolt 1036 is penetrated through the inside of the through holes 1039 for rotation operation to fixedly install the connecting elastic piece 1032.

[0031] In order to facilitate the reinforcement and installation of the connecting elastic piece 1032 inside the installation groove 1034 by rotating the reinforcement component, and to prevent instability or even dropping during micro-elastic deformation, in this embodiment, preferably, the rotation reinforcement component includes a bolt 1036 passing through the inside of the through-hole 1039. One end of the bolt 1036 is provided with an internal hexagonal groove 1037. The bolt 1036 is rotated and adjusted by a wrench engaging inside the internal hexagonal groove 1037. An internal threaded hole 1038 is provided at the inner bottom end of the installation groove 1034. The end of the through-hole 1039 matches the internal structure of the internal threaded hole 1038. The bolt 1036 is rotated inside the through-hole 1039 until it is rotationally inserted into the internal threaded hole 1038 for fixed installation, which is convenient for fixing.

[0032] The working principle and usage process of the present utility model: For this kind of cutting knife connection mechanism of the knife nail magazine assembly, before use, after the end of the connecting elastic piece 1032 is engaged inside the installation groove 1034, the bolt 1036 is passed through the inside of the through-hole 1039. The wrench engages inside the internal hexagonal groove 1037 to rotate the bolt 1036 until the end of the bolt 1036 is rotated into the internal threaded hole 1038 to install and reinforce the connecting elastic piece 1032. Thus, after the connecting elastic piece 1032 is installed, it is strengthened and fixed, enabling the main body 100 of the cutting knife connection mechanism to fix the connecting elastic piece 1032 during the backward movement of the cutting knife. It is not easy to drop, and the installation operation is stable, improving the strengthening fixity and usage stability of the main body 100 of the cutting knife connection mechanism when the cutting knife body 103 is installed and closed on the surface of the nail magazine main body 102;

[0033] Then during use, the cutting knife body 103 is assembled in the nail magazine main body 102, and the tool holder 1031 is assembled in the endoscope body. When the nail magazine main body 102 is loaded into the nail magazine seat 101 for firing, the tool holder 1031 moves forward. After contacting the connecting elastic piece 1032 at the rear end of the cutting knife body 103, the connecting elastic piece 1032 undergoes a small amount of elastic deformation, and the end of the connecting elastic piece 1032 and the bending piece 1035 are snapped into the card slot 1033 on the tool holder 1031, completing the connection. Then, it continues to drive the bevel cutting body 104 forward for anastomotic cutting. When the firing is in place and the tool holder 1031 retreats during the backward movement, since the connecting elastic piece 1032 is snapped into the inside of the card slot 1033, the tool holder 1031 can drive the cutting knife body 103 to retreat together. When the cutting knife body 103 retreats to the end of the nail magazine main body 102, the connecting elastic piece 1032 rebounds to release the bending piece 1035 from the card slot 1033 to disconnect the connection, and the tool holder 1031 continues to retreat in place. Therefore, it is convenient for the main body 100 of the cutting knife connection mechanism to connect the cutting knife body 103 during use and perform cutting and backward movement operations, and it is also convenient for replacement after one use, achieving the effects of replacing the cutting knife body 103 on the knife nail magazine main body 102 and performing cutting and backward movement.

[0034] Although embodiments of the present utility model have been shown and described (see the above detailed description), those of ordinary skill in the art will understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A cutting knife connection mechanism of a nail magazine assembly with a knife, comprising a cutting knife connection mechanism body (100), wherein the cutting knife connection mechanism body (100) comprises a nail magazine seat (101), a nail magazine body (102) is mounted on the upper surface of the nail magazine seat (101), a cutting knife body (103) is arranged at one end of the interior of the nail magazine body (102), and a beveling body (104) is arranged at one end of the cutting knife body (103), wherein: The cutting blade connection mechanism body (100) is also provided with: A connecting mechanism, wherein the connecting mechanism comprises a mounting assembly arranged at the end of the cutting blade body (103), wherein a connecting assembly is arranged inside the mounting assembly; A reinforcement installation mechanism is provided, and the reinforcement installation mechanism comprises a penetration component arranged at one end of the connection component, and a rotation reinforcement component is arranged inside the penetration component.

2. A cutting knife connection mechanism for a nail magazine assembly with a knife according to claim 1, characterized in that: The mounting assembly comprises a blade holder (1031) arranged at the other end of the cutting blade body (103), and a mounting groove (1034) is provided on one end surface of the cutting blade body (103).

3. A cutting knife connection mechanism of a nail magazine assembly with a knife according to claim 2, characterized in that: The mounting groove (1034) and the cutting blade body (103) are an integrated structure, and the end of the cutting blade body (103) is consistent with the internal structure of the blade holder (1031).

4. A cutting knife connection mechanism for a nail magazine assembly with a knife according to claim 2, characterized in that: The connection assembly comprises a connection spring sheet (1032) arranged inside the installation groove (1034), the end of the connection spring sheet (1032) is integrally formed with a bending piece (1035), and a clamping slot (1033) is provided inside the tool holder (1031).

5. A cutting knife connection mechanism of a nail magazine assembly with a knife according to claim 4, characterized in that: One inner end of the slot (1033) is a rectangular structure, and the end of the bending piece (1035) is in contact with the inner surface of the slot (1033).

6. A cutting knife connection mechanism for a nail magazine assembly with a knife according to claim 4, characterized in that: The penetration component comprises three penetration holes (1039) formed at one end of the connecting spring sheet (1032), and the penetration holes (1039) and the connecting spring sheet (1032) are an integrated structure.

7. A cutting knife connection mechanism of a nail magazine assembly with a knife according to claim 6, characterized in that: The rotation reinforcement assembly includes a bolt (1036) passing through the through hole (1039), one end of the bolt (1036) is provided with a hexagonal groove (1037), the inner bottom end of the installation groove (1034) is provided with an internal threaded hole (1038), and the end of the through hole (1039) matches the internal structure of the internal threaded hole (1038).

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