Damage prevention structure of sleeve connecting piece of electric anastomat

Abstract

The utility model discloses a damage prevention structure of a sleeve connecting piece of an electric anastomat, the electric anastomat comprises a cutting anastomosis assembly, a gun body and a first connecting rod connected with the cutting anastomosis assembly and the gun body, and the gun body is provided with an operating mechanism used for opening a jaw of the cutting anastomosis assembly. A disc body which can rotate around the axis of the disc body and is in meshing transmission with the operating mechanism is installed in the gun body, a plurality of gear teeth for meshing are arranged on the circumferential portion of the disc body, a second connecting rod is connected to the disc face of the disc body in a sliding mode, and the first connecting rod is sleeved with a sleeve connecting piece. The first end of the second connecting rod is correspondingly connected with the sleeve connecting piece, the second end of the second connecting rod is rotationally connected with the disc body, when large resistance is encountered, the force can be absorbed through elastic deformation of the elastic arm on the gear, and therefore the situation that the rack is damaged due to stress torsion of the sleeve connecting piece is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to an anti-damage structure of a sleeve connector of an electric stapler. Background Art

[0002] Laparoscopic stapler (laparoscopic cutting stapler and disposable stapler magazine) is one of the important instruments in laparoscopic surgery. It replaces traditional manual suturing and uses titanium staples to separate or staple tissues. It is easy and quick to operate, greatly shortening the operation time.

[0003] When the existing electric stapler sleeve connector is in use, after the jaws are clamped, if the resistance is too large, the sleeve connector may be lifted up and squeezed against other parts, thereby possibly damaging the frame. Utility Model Content

[0004] The utility model aims to provide an anti-damage structure for a sleeve connector of an electric stapler, which can absorb part of the force by utilizing the elastic deformation of an elastic arm on a gear when encountering large resistance, thereby preventing the sleeve connector from being twisted and damaging the frame.

[0005] According to an anti-damage structure of a sleeve connector of an electric stapler provided by the utility model, the electric stapler comprises a cutting and stapling assembly, a gun body and a first connecting rod connecting the cutting and stapling assembly and the gun body, characterized in that an operating mechanism for opening the jaws of the cutting and stapling assembly is installed on the gun body, a disk body which can rotate around its own axis and mesh with the operating mechanism for transmission is installed in the gun body, a plurality of gear teeth for meshing are arranged on the circumferential portion of the disk body, a second connecting rod is slidably connected to the disk surface of the disk body, a sleeve connector is arranged on the outer sleeve of the first connecting rod, a first end of the second connecting rod is correspondingly connected to the sleeve connector, a second end of the second connecting rod is rotatably connected to the disk body, an elastic strip is opened on the disk body, the through hole is opened on the elastic strip, an insertion block is vertically arranged on the second end of the second connecting rod, and the insertion block is rotatably inserted in the through hole.

[0006] In actual use, when the operator needs to open the jaws of the cutting and anastomosis assembly 1, during the process of opening the jaws, some of the gear teeth 6 on the disc body 5 engage and rotate with the operating mechanism 4. When the jaws are fully opened and hit against foreign objects, the engagement between the disc body 5 and the operating mechanism 4 is interrupted. The foreign objects will have an excessive resistance to the jaws, and this resistance will be transmitted to the second connecting rod 7. The second connecting rod 7 will push back against the disc body 5. The elastic strip 8 will absorb this part of the resistance in this process to prevent the components from being squeezed and damaged.

[0007] Furthermore, a mounting groove is provided on the disk body, and the elastic strip extends from one end of the mounting groove.

[0008] Furthermore, the elastic strip is curved and is cocentric with the disk body.

[0009] Furthermore, an auxiliary gear is coaxially mounted below the disk body and meshes with the operating mechanism for transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of a part of the internal structure of the electric stapler according to an embodiment of the utility model;

[0011] Figure 2 It is an enlarged view of a part of the structure of the gun body according to the embodiment of the utility model;

[0012] Figure 3 This is a schematic diagram of the structure of the disk body according to an embodiment of the utility model;

[0013] In the figure, 1-cutting and anastomosis assembly; 2-gun body; 3-first connecting rod; 4-operating structure; 5-disc body; 6-gear teeth; 7-second connecting rod; 8-elastic strip; 9-through hole; 10-installation groove. DETAILED DESCRIPTION

[0014] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0015] Combination Figure 1 , Figure 2 and Figure 3 , shows an anti-damage structure of a sleeve connector of an electric stapler of the utility model, the electric stapler comprises a cutting and stapling assembly 1, a gun body 2 and a first connecting rod 3 connecting the cutting and stapling assembly 1 and the gun body 2, characterized in that an operating mechanism 4 for opening the jaws of the cutting and stapling assembly 1 is installed on the gun body 2, a disc body 5 which can rotate around its own axis and mesh with the operating mechanism 4 for transmission is installed in the gun body 2, a plurality of gear teeth 6 for meshing are arranged on the circumferential portion of the disc body 5, a second connecting rod 7 is slidably connected to the disc surface of the disc body 5, a sleeve connector is arranged on the outer sleeve of the first connecting rod 3, a first end of the second connecting rod 7 is correspondingly connected to the sleeve connector, a second end of the second connecting rod 7 is rotatably connected to the disc body 5, an elastic strip 8 is opened on the disc body 5, a through hole 9 is opened on the elastic strip 8, an insert block is vertically arranged on the second end of the second connecting rod 7, and the insert block is rotatably inserted in the through hole 9.

[0016] In actual use, when the operator needs to open the jaws of the cutting and anastomosis assembly 1, during the process of opening the jaws, some of the gear teeth 6 on the disc body 5 mesh with the operating mechanism 4 and rotate. When the jaws are clamped and hit the tissue after closing, the engagement between the disc body 5 and the operating mechanism 4 is interrupted. If the elasticity of the tissue is too large, the jaws tend to open due to the rebound force. This resistance will be transmitted to the second connecting rod 7, and the second connecting rod 7 will push the disc body 5 backwards. The elastic strip 8 will absorb this part of the resistance in this process to prevent the components from being squeezed and damaged.

[0017] The disc body 5 is provided with a mounting groove 10 , and an elastic strip 8 extends from one end of the mounting groove 10 .

[0018] The elastic strip 8 is curved and is coaxial with the disk body 5 .

[0019] An auxiliary gear is coaxially mounted below the disk body 5 and meshes with the operating mechanism 4 for transmission.

[0020] The function of the auxiliary gear is that the gear teeth 6 on the disc body 5 are separated from the operating mechanism 4, that is, there is no meshing relationship, and the auxiliary gear can still mesh and transmit with the operating mechanism 4 to ensure normal operation.

[0021] The principle of the utility model is as follows:

[0022] In actual use, when the operator needs to open the jaws of the cutting and anastomosis assembly 1, during the process of opening the jaws, some of the gear teeth 6 on the disc body 5 mesh with the operating mechanism 4 and rotate. When the jaws are clamped and hit the tissue after closing, the engagement between the disc body 5 and the operating mechanism 4 is interrupted. If the elasticity of the tissue is too large, the jaws tend to open due to the rebound force. This resistance will be transmitted to the second connecting rod 7, and the second connecting rod 7 will push the disc body 5 backwards. The elastic strip 8 will absorb this part of the resistance in this process to prevent the components from being squeezed and damaged.

[0023] The above is only a preferred implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. An anti-damage structure of a sleeve connector of an electric stapler, the electric stapler comprising a cutting and stapling assembly, a gun body, and a first connecting rod connecting the cutting and stapling assembly and the gun body, characterized in that: An operating mechanism for opening the jaws of the cutting and anastomosis assembly is installed on the gun body, and a disk body that can rotate around its own axis and mesh with the operating mechanism for transmission is installed in the gun body, and a plurality of gear teeth for meshing are arranged on the circumferential portion of the disk body, and a second connecting rod is slidably connected to the disk surface of the disk body, a sleeve connecting piece is arranged on the outer sleeve of the first connecting rod, a first end of the second connecting rod is correspondingly connected to the sleeve connecting piece, and a second end of the second connecting rod is rotatably connected to the disk body, an elastic strip is provided on the disk body, a through hole is provided on the elastic strip, and an insertion block is vertically provided on the second end of the second connecting rod, and the insertion block is rotatably inserted in the through hole.

2. The anti-damage structure of the sleeve connector of the electric stapler according to claim 1, characterized in that: The disk body is provided with a mounting groove, and one end of the mounting groove is extended with the elastic strip.

3. The anti-damage structure of the sleeve connector of the electric stapler according to claim 2, characterized in that: The elastic strip is curved and has the same center as the disk body.

4. The anti-damage structure of the sleeve connector of the electric stapler according to claim 1, characterized in that: An auxiliary gear meshing with the operating mechanism is coaxially mounted below the disk.

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