一种手术器械的可调弯结构及一种内窥镜下手术器械

Abstract

本实用新型提供一种手术器械的可调弯结构及一种内窥镜下手术器械，属于医疗器械领域，用于解决现有技术中可调弯结构的弯曲半径较大和弯曲角度较小的问题，包括第一固定件、第二固定件和多个设置在第一固定件和第二固定件之间的转动节，通过将转动节的连接环的远端设置第一铰接槽，近端设置与第一铰接槽相适配的第一铰接件，且第一铰接槽的内侧壁与垂直于连接环的中心线的直线a所形成的夹角β大于等于0°，小于90°，以此避免还需采用铆接等方式才能将可调弯结构制作成形，且由于减少了铆接所需要使用的铆钉以及卡接所需要的卡扣结构，因此，可调弯结构的调弯半径以及调弯角度能够做到更小，降低术者在手术时的操作难度，有利于ESD手术的普及。

Claims

1. An adjustable bending structure for a surgical instrument, characterized in that, include: A first fixing member, a second fixing member, and a plurality of rotating joints disposed between the first fixing member and the second fixing member. The distal end of the first fixing member is connected to an operating component, and the proximal end is hinged to the adjacent rotating joint. The distal end of the second fixing member is hinged to the adjacent rotating joint, and the proximal end is connected to a conduit. The rotating joint includes a connecting ring, a first hinge groove that protrudes at least partially from the distal end of the connecting ring, and a first hinge member that protrudes at least partially from the proximal end of the connecting ring and is adapted to the first hinge groove. The angle β formed by the inner sidewall of the first hinge groove and a straight line a perpendicular to the center line of the connecting ring is greater than or equal to 0° and less than 90°.

2. The adjustable bending structure of a surgical instrument according to claim 1, characterized in that: The angle β between the inner wall of the first hinge groove and the straight line a perpendicular to the center line of the connecting ring is 0-80°.

3. The adjustable bend structure of a surgical instrument according to claim 1, wherein: The angle β between the inner wall of the first hinge groove and the straight line a perpendicular to the center line of the connecting ring is 30-60°.

4. An articulating structure for a surgical instrument according to any one of claims 1 or 3, wherein: It also includes a woven mesh, which is sleeved on the outside of the first fixing member, the second fixing member and the plurality of rotating joints.

5. An articulating structure for a surgical instrument according to any one of claims 1 or 3, wherein: It also includes a rubber tube, which is sleeved on the outside of the first fixing member, the second fixing member and the plurality of rotating joints.

6. An articulating structure for a surgical instrument according to any one of claims 1 or 3, wherein: It also includes a braided mesh and a rubber tube, the braided mesh being sleeved on the outside of the first fixing member, the second fixing member and the plurality of rotating joints, and the rubber tube being sleeved on the outside of the braided mesh.

7. The adjustable bend structure of a surgical instrument according to claim 1, wherein: Two guides for guiding the traction wire are spaced apart on the inner side wall of the connecting ring.

8. An articulating structure for a surgical instrument according to claim 7, wherein: The guide has a V-shaped structure, with its two ends connected to the inner sidewall of the connecting ring.

9. An endoscopic surgical instrument, characterized by, The device includes an operating component, a catheter, a handle, and an adjustable bending structure for a surgical instrument as described in any one of claims 1-8; the distal end of the first fixation member is connected to the operating component, the proximal end of the second fixation member is connected to the catheter, and the proximal end of the catheter is connected to the handle.

10. An endoscopic surgical instrument according to claim 9, wherein: The second fixing member and the catheter are made of metal, and the proximal end of the second fixing member is welded to the distal end of the catheter.

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