CN219271052U

CN219271052U - Surgical instrument jaw limiting structure

Info

Publication number: CN219271052U
Application number: CN202223002014.6U
Authority: CN
Inventors: 苏士程; 桂凯; 张赟; 徐德慧
Original assignee: Tuodao Medical Technology Co Ltd
Current assignee: Tuodao Medical Technology Co Ltd
Priority date: 2022-11-11
Filing date: 2022-11-11
Publication date: 2023-06-30
Anticipated expiration: 2032-11-11

Abstract

The utility model discloses a limiting structure of a surgical instrument jaw, which comprises a first clamp and a second clamp, wherein the first clamp and the second clamp are connected through a first rotating shaft in a shaft hole, a first limiting block and a second limiting block are respectively arranged on the adjacent surfaces of the first clamp and the second clamp, and the opening/closing angle of the first clamp and the second clamp is limited through the cooperation of the first limiting block and the second limiting block. The utility model can prevent the jaw from being blocked when the jaw continues to open, plays a role in limiting the opening of the jaw, ensures that the coarse tooth intestinal forceps are easier to operate in the process of clamping, pulling and fixing tissues, can prevent the jaw from being blocked when the jaw continues to close, plays a role in limiting the closing of the jaw, can ensure the tissue to be clamped, and is not easy to damage the tissues of a patient when the tissue is pulled. Compared with the prior art, the novel energy-saving device has the advantages of more compact overall structure, convenience in processing, safety and reliability in operation and wide applicability.

Description

Surgical instrument jaw limiting structure

Technical Field

The utility model relates to a surgical instrument jaw limiting structure, and belongs to the technical field of medical equipment.

Background

During surgery, with portions of the jaw apparatus having relative rotation, such as a coarse tooth intestinal clamp apparatus, it is necessary to provide a large tissue clamping force to ensure firm pulling of tissue or other manipulation.

In the process of clamping tissues, the existing jaw instrument has overlarge opening angle of the jaws, more clamped tissues are not beneficial to clamping the tissues, and meanwhile, the jaws are not easy to close. Furthermore, if the jaws cannot be limited to close, there is a risk of excessive clamping force and even pinching off patient tissue. It is therefore necessary to limit the angle of opening and closing of the jaws to ensure the reliability of the subsequent clamping of the tissue.

Disclosure of Invention

The utility model aims to: aiming at the problems in the prior art, the utility model provides the surgical instrument jaw limiting structure which can effectively limit the opening and closing angle of the jaw so as to ensure the reliability of the follow-up clamping tissues and has the advantages of compact structure, convenience in processing, low cost, reliability in operation and the like.

The technical scheme is as follows: in order to achieve the above-mentioned purpose, the utility model provides a surgical instrument jaw limiting structure, which comprises a first jaw and a second jaw, wherein the first jaw and the second jaw are connected through a first rotating shaft in a shaft hole, a first limiting block and a second limiting block (which can be rectangular, circular or fan-shaped or the like) are respectively arranged on the adjacent surfaces of the first jaw and the second jaw, and the limiting of the opening/closing angle of the first jaw and the second jaw is realized through the cooperation of the first limiting block and the second limiting block, and the limiting structure specifically comprises the following four situations:

1) Only limiting the opening angle of the first clamp and the second clamp is realized through the matching of a group of limiting blocks;

2) Only limiting the closing angle of the first clamp and the second clamp is realized through the cooperation of a group of limiting blocks;

3) The opening and closing angles of the first clamp and the second clamp are limited simultaneously through the matching of a group of limiting blocks;

4) The opening and closing angles of the first clamp and the second clamp are respectively limited by the cooperation of the two groups of limiting blocks.

Further, the first limiting block and the second limiting block extend around the first rotating shaft, first limiting surfaces are arranged at one ends of the first limiting block and the second limiting block, and the opening angle of the first clamp and the second clamp is limited through the cooperation of the first limiting surfaces of the first limiting block and the first limiting surfaces of the second limiting block.

Further, the other ends of the first limiting block and the second limiting block are respectively provided with a second limiting surface (the second limiting surfaces and the first limiting surfaces are respectively arranged on different sides of the first rotating shaft), and the limitation of the closing angle of the first clamp and the second clamp is realized through the cooperation of the second limiting surfaces of the first limiting block and the second limiting surfaces of the second limiting block, so that the limitation of the opening and closing angle of the first clamp and the second clamp can be simultaneously realized only through a group of limiting blocks.

Furthermore, the surgical instrument jaw limiting structure further comprises a jaw seat and a force application wheel assembly arranged on the jaw seat, and the first clamping jaw and the second clamping jaw are driven to rotate around the first rotating shaft through the force application wheel assembly.

Further, a preferred jaw drive is provided herein: the stress application wheel assembly comprises a first stress application wheel and a second stress application wheel, and the first stress application wheel and the second stress application wheel are hinged to the front end of the clamp seat through a second rotating shaft; the first rotating shaft penetrates through the middle parts of the first clamping jaw and the second clamping jaw, and the distal ends of the first clamping jaw and the second clamping jaw are clamping ends; the proximal ends of the first and second jaws are hinged to the tread of the first and second force wheels, respectively.

The first clamping jaw and the second clamping jaw can be driven to rotate around the first rotating shaft through the reverse rotation of the first stressing wheel and the second stressing wheel around the second rotating shaft.

Further, cables are wound on the first stressing wheel and the second stressing wheel respectively, and the cables are used for realizing the rotation driving of the first stressing wheel and the second stressing wheel respectively.

The beneficial effects are that: according to the surgical instrument jaw limiting structure, on one hand, the jaw can be blocked when continuously opened, the jaw opening limiting function is achieved, the coarse tooth intestinal forceps are easier to operate in the process of clamping, pulling and fixing tissues, on the other hand, the jaw can be blocked when continuously closed, the jaw closing limiting function is achieved, the tissue can be clamped, and the tissue of a patient is not easy to damage when the tissue is pulled. Compared with the prior art, the novel energy-saving device has the advantages of more compact overall structure, convenience in processing, safety and reliability in operation and wide applicability.

Drawings

FIG. 1 is a schematic view of a structure of a coarse tooth intestinal clamp according to an embodiment of the present utility model;

FIG. 2 is an exploded view of the coarse tooth intestinal clamp at a first rotational axis in accordance with an embodiment of the present utility model;

FIG. 3 is a schematic view of a first jaw according to an embodiment of the present utility model;

FIG. 4 is a schematic view of a second jaw according to an embodiment of the utility model;

FIG. 5 is a view showing the state of opening the jaw of the coarse tooth intestinal forceps according to the embodiment of the utility model;

FIG. 6 is a view showing a maximum opening state of jaws of the coarse tooth intestinal clamp according to the embodiment of the utility model;

FIG. 7 is a schematic diagram of the driving of the coarse tooth intestinal clamp in the embodiment of the utility model;

the drawings include: 1. the first clamping jaw, 2, the second clamping jaw, 3, a first stress application wheel, 4, a second stress application wheel, 5, a wrist joint, 6, a jaw seat, S1, a first rotating shaft, S2, a second rotating shaft, 11, a first limiting block, 111, a first limiting block first limiting surface, 112, a first limiting block second limiting surface, 12, a first shaft hole, 21, a second limiting block, 211, a second limiting block first limiting surface, 212, a second limiting block second limiting surface, 22 and a second shaft hole.

Detailed Description

The following description of the preferred embodiments of the present utility model will be made with reference to the accompanying drawings, to more clearly and completely illustrate the technical aspects of the present utility model.

The embodiment provides a jaw limiting structure suitable for coarse tooth intestinal forceps. As shown in fig. 1, the coarse tooth intestinal forceps comprise a forceps holder 6, a wrist joint 5, a force application wheel assembly and a forceps holder assembly, wherein the force application wheel assembly comprises a first force application wheel 3 and a second force application wheel 4, the forceps holder assembly comprises a first forceps holder 1 and a second forceps holder 2, and the first force application wheel 3 and the second force application wheel 4 are hinged on the wrist joint 5 at the front end of the forceps holder 6 through a second rotating shaft S2.

As shown in fig. 2, the first clamping jaw 1 and the second clamping jaw 2 have the same shape and size, are arranged on two sides of the force application wheel assembly in an up-down symmetrical mode, and the middle parts of the first clamping jaw 1 and the second clamping jaw 2 are connected through a first rotating shaft S1 in a shaft hole mode; the distal ends of the first clamping jaw 1 and the second clamping jaw 2 are clamping ends, and the proximal ends of the first clamping jaw 1 and the second clamping jaw 2 are respectively hinged with the wheel surfaces of the first stressing wheel 3 and the second stressing wheel 4 through pin shafts (the hinging points are close to the outer circumference, and the distances from the two hinging points to the center of the stressing wheel are consistent).

Further, tungsten wire ropes are respectively wound on the first stressing wheel 3 and the second stressing wheel 4. When the rough tooth intestinal clamp works, the motor drives the winch to drive the tungsten wire rope to tighten or loosen (not shown in the figure) to start the engine, the tungsten wire rope drives the first stressing wheel 3 and the second stressing wheel 4 to reversely rotate, so that the proximal ends of the first clamp 1 and the second clamp 2 are driven to reversely rotate around the second rotating shaft S2 (as shown in fig. 7), and the first clamp 1 and the second clamp 2 are driven to rotate around the first rotating shaft S1, so that the opening and the closing of the jaws are realized.

As shown in fig. 3 and 4, the middle parts of the first clamping jaw 1 and the second clamping jaw 2 are respectively provided with a first shaft hole 12 and a second shaft hole 22 for penetrating the first rotating shaft S1, and one adjacent surface of the first clamping jaw 1 and the second clamping jaw 2 is respectively provided with a first limiting block 11 and a second limiting block 21 which are matched with each other.

In this embodiment, the shapes and sizes of the first limiting block 11 and the second limiting block 21 are the same, and the first limiting block 11 and the second limiting block 21 are distributed in a fan shape around the shaft hole, wherein one ends of the first limiting block 11 and the second limiting block 21 are both provided with a first limiting surface, and the other ends of the first limiting block 11 and the second limiting block 21 are both provided with a second limiting surface (as shown in fig. 5, the second limiting surface and the first limiting surface are respectively on different sides of the shaft hole).

As shown in fig. 6, in the process of opening the jaws, the first limiting surface 111 of the first limiting block and the first limiting surface 211 of the second limiting block gradually approach each other until they are attached to each other, at this time, the jaws cannot be opened continuously, and the opening angle reaches the maximum (preferably 50 ° or less). Similarly, in the process of closing the jaws, the first limiting block second limiting surface 112 and the second limiting block second limiting surface 212 gradually approach each other until the jaws are mutually attached, at this time, the jaws cannot be continuously closed, and the closing angle is minimum.

In practical application, the maximum opening angle and the minimum closing angle of the jaws can be set separately according to practical requirements or industry standards. The utility model relates to a coarse tooth intestinal clamp device, which is only used for describing the utility model by taking the device as a reference, the application is not limited to the device, and any rotatable surgical device jaw structure with the angle required to be limited can be applied to the scheme and also should be protected.

The above detailed description is merely illustrative of the preferred embodiments of the present utility model and is not intended to limit the scope of the present utility model. Various modifications, substitutions and improvements of the technical scheme of the present utility model will be apparent to those skilled in the art from the description and drawings provided herein without departing from the spirit and scope of the utility model.

Claims

1. The utility model provides a surgical instrument jaw limit structure, its characterized in that includes first jaw and second jaw, first jaw and second jaw carry out the shaft hole through first pivot and connect, and first jaw and second jaw are adjacent one side be equipped with first stopper and second stopper respectively, realize the restriction of first jaw and second jaw open/close angle through the cooperation of first stopper and second stopper.

2. The surgical instrument jaw limiting structure according to claim 1, wherein the first limiting block and the second limiting block extend around the first rotating shaft, one ends of the first limiting block and the second limiting block are provided with first limiting surfaces, and the opening angle of the first clamp and the second clamp is limited through the cooperation of the first limiting surfaces of the first limiting block and the first limiting surfaces of the second limiting block.

3. The surgical instrument jaw limiting structure according to claim 2, wherein the other ends of the first limiting block and the second limiting block are respectively provided with a second limiting surface, and the limiting of the closing angle of the first clamp and the second clamp is realized through the matching of the second limiting surfaces of the first limiting block and the second limiting surface of the second limiting block.

4. The surgical instrument jaw limiting structure of claim 1, further comprising a jaw seat and a force wheel assembly mounted on the jaw seat, wherein the force wheel assembly is used to rotatably drive the first jaw and the second jaw about the first axis of rotation.

5. The surgical instrument jaw limiting structure of claim 4, wherein the force applying wheel assembly comprises a first force applying wheel and a second force applying wheel, and wherein the first force applying wheel and the second force applying wheel are hinged to the front end of the jaw seat through a second rotating shaft; the first rotating shaft penetrates through the middle parts of the first clamping jaw and the second clamping jaw, and the distal ends of the first clamping jaw and the second clamping jaw are clamping ends; the proximal ends of the first and second jaws are hinged to the tread of the first and second force wheels, respectively.

6. The surgical instrument jaw limiting structure according to claim 5, wherein the first force applying wheel and the second force applying wheel are respectively wound with cables for realizing rotation driving of the first force applying wheel and the second force applying wheel.