Clamping device and jaw part thereof

Abstract

A clamping device and a clamp portion (100) of same. In the clamp portion, the rear end of a connecting part (150) is inserted into a connecting tube (160) and is fastened, the front end of the connecting part is movably connected to a clamping piece fixture (120), the connecting part has an easily breaking portion (151), an unlocking part (170) is sleeved on the connecting part and is limited horizontally by the connecting part and the connecting tube (160), two clamping pieces (110) are connected to the clamping piece fixture by a clamping piece connecting pin (180), the clamping piece fixture is provided inside a clamp tube (130) and can move back and forth, a clamping piece stop pin (140) is fixed at the front of the clamp tube to prevent the clamping piece fixture from sliding out of the clamp tube, the tube wall of the clamp tube is provided with an elastic spring (132), the spring is indented and then the spring and a locking surface (121) of the clamping piece fixture form a unidirectionally locked fitting structure, and the unlocking part is provided with a pushing surface (173) for pushing the clamping piece fixture to move forward and a wedge surface (171) for pulling the spring to implement unlocking. The technical solution has a simple and proper structure, and achieves reliable and stable clamping and locking; and moreover, the clamping piece can be repeatedly opened and closed, and the clamp can perform relocation and clamping many times.

Description

Technical field [0001] The invention relates to a clamping device used under endoscopic inspection, in particular to a clamping device used for clamping tissue under endoscopic inspection to achieve the purpose of closing wounds, marking, and anchoring other instruments, and a clamping part thereof . Background technique [0002] With the development of gastrointestinal endoscopy treatment technology, many gastrointestinal diseases, such as mucosal defects of the gastrointestinal tract, hemorrhagic ulcers, arteriolar hemorrhage, small and medium polyps, and colonic diverticula need to be treated directly with clamping devices; The holding device can also be used as a marker under endoscopic and X-ray monitoring; the holding device can also be used as an anchoring device for feeding tubes and other instruments; the holding device can even be used as a closed treatment device for conservative treatment of gastrointestinal perforations. [0003] In the prior art, the following clampi...

AI Technical Summary

Problems solved by technology

[0004] In the patent document published by China with the patent application number CN200980123274.7, the proximal end of the integral clip is fixed in the capsule, and the fixed end of the clip in the clamp tube is fixed and cannot be lifted, so its fixed The end is easy to yield and bend, which affects the opening distance of the clamp when it is opened again; the clamp and the pushing part are connected by a spring, so that the clamp and the pushing part cannot rotate relative to each other, and the rotation function of the clamp cannot be realized; There is no unlocking function, the pre-closing of the clip needs to maintain an appropriate amount of back tension to maintain, and the clip cannot be unlocked after being locked by misoperation

[0005] In the patent document published by China with the patent application number CN201220250652.7, the device does not have an unlocking function, the pre-closure of the clip needs to be maintained with an appropriate back tension, and the clip cannot be unlocked after being locked by misoperation; and, The holes in the jaws of the connecting part of the fixed clamp penetrate the elastic ring to keep the jaws closed, which is complicated to manufacture and assemble; the separation ring connecting the two clips is complicated to manufacture and assemble; the device no swivel mechanism

[0006] In the patent document published by China with the patent application number CN201220160369.5, the four-link structure composed of the chuck and the connecting rod is installed in the chuck seat, the chuck seat is pulled into the connecting sleeve, and the chuck seat has no locking mechanism , when the human tissue is wriggling, the chuck is easy to slide out of the connecting sleeve again and open, eventually causing clamping failure

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