Clamping hook of surgical linear cutting stapler

Abstract

A clamping hook of a surgery linear cutting anastomat achieves that when a nail container assembly and a nail anvil assembly are clamped by the clamping hook, relevant portions among the nail container assembly, the nail anvil assembly and the clamping hook contact in a cambered mode, produced elastic deformation does not cause oversize gaps of far end portions, and an anastomosis nail is guaranteed to be correctly bent and formed; the clamping hook can control the nail container assembly and the nail anvil assembly to produce to-be-anastomosed tissue loosening motion, to-be-anastomosed tissue holding motion and to-be-anastomosed tissue clamping motion, and operation procedures are conveniently conducted; a baffle on the nail container frame blocks a door-shaped gap of an outer shell far end of the clamping hook, the door-shaped gap of the outer shell of the clamping hook does not hurt the to-be-anastomosed tissue, and operation procedures are enabled to be safe.

Description

technical field [0001] The invention relates to clamping hooks of various surgical linear cutting staplers. Background technique [0002] Various surgical linear cutting staplers are used to replace the manual anastomosis with needles and threads in surgical operations, and are being widely used in end-to-end, end-to-side and side-to-side anastomosis of organs and tissues such as human digestive tract organs, respiratory tract organs, and urogenital organs. Surgery, channel forming surgery and incision closing surgery, especially suitable for anastomosis of organs and tissues that are exposed and difficult to operate, can reduce operation time and improve operation quality. [0003] Various surgical linear cutting staplers as introduced in US Patent Publications 20050222616, 20080116244, 20090308909 and 20110068145 are composed of a staple cartridge assembly, an anvil assembly and a clamping hook. The staple cartridge assembly includes a staple cartridge, a staple cartridge...

AI Technical Summary

Problems solved by technology

The unsatisfactory part of the clamping hook of the surgical linear cutting stapler of this style is: first, when the nail cartridge assembly and the nail anvil assembly are clamped by the clamping hook, the hook of the clamping hook hooks the nail with a plane The circular bump in the middle of the anvil frame and the flat pressing block on the staple cartridge frame press on the circular bump at the proximal end of the staple anvil frame, both of which are in line contact, and are prone to elastic deformation when stressed. The part where the component and the anvil component clamp the tissue to be anastomotic is a long cantilever beam structure, so when the clamping force is large, the elastic deformation will cause the staple cartridge component and the anvil component to clamp the distal part of the tissue to be anastomotic As a result, the staples cannot be bent and formed correctly, and the surgical purpose of correct anastomosis of the tissues cannot be achieved; second, during the operation, it is often necessary to temporarily clamp the tissues to be anastomotic, so that the surgeon can observe the clamped tissue to be anastomosed. Whether the anastomotic tissue site is suitable, or complete some auxiliary operations before performing the operation of cutting the anastomotic tissue, but the clamping hook of this style of surgical linear cutting stapler can only control the loosening and clamping of the staple cartridge assembly and the anvil assembly These two actions of the tissues to be anastomosed bring a lot of inconvenience to the operation; the 3rd, when opening and clamping the staple cartridge assembly and the nail anvil assembly, the clamping hook pivots around the staple cartridge frame, and when clamping The far end of the shell of the hook needs to have a door-shaped notch straddling the staple cartridge rack. Since the door-shaped notch of the shell of the clamping hook is close to the tissue to be anastomotic, it is easy to pinch the tissue to be anastomotic, and it is easy to affect the clamping. Hook pivots around cartridge frame

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