Nail anvil assembly and circular anastomat

Abstract

The invention relates to a nail anvil assembly, which comprises a nail anvil head and a nail anvil rod arranged on the nail anvil head, an insertion cavity used for being connected with a puncture shaft in an inserted mode is formed in the end, away from the nail anvil head, of the nail anvil rod, the outer circumference of the nail anvil rod is sleeved with an annular elastic lock fastener, and a lock hole communicated with the insertion cavity is formed in the outer circumference of the nail anvil rod in a penetrating mode. A clamping block is arranged in the lock hole, one end of the clamping block abuts against the inner wall of the elastic locking fastener, the other end of the clamping block extends into the insertion cavity, and the part, close to the insertion cavity, of the lock hole and the clamping block form interference to limit the clamping block to completely fall into the insertion cavity. The nail anvil assembly is exquisite in structure and has enough clamping space, insertion connection or separation of the nail anvil and the puncture shaft cannot be affected when the nail anvil is clamped, the elastic lock catch piece is not prone to being deformed by external force, surgical operation is not affected, and efficient operation is guaranteed.

Description

technical field [0001] The invention relates to a nail anvil assembly and a circular stapler. Background technique [0002] At present, in general surgery, circular staplers are often used to cut and close tissues. The anvil is an important part of the circular stapler, and it is necessary to connect the anvil to the puncture shaft on the circular stapler when stapling tissues. Most of the existing anvil connection structures are long elastic sheet openings, but the long elastic sheet occupies a large proportion of the total length of the anvil, and the doctor is easy to clamp the elastic sheet when clamping, which is not conducive to the smooth connection of the anvil and the puncture shaft. In addition, the long elastic sheet is easily deformed by external force. Therefore, in order to meet the practical needs of general surgery, it is necessary to design an anvil with a delicate structure, sufficient space as a clamping position, and not easily deformed. Contents of t...

AI Technical Summary

Problems solved by technology

Most of the existing anvil connection structures are long elastic sheet openings, but the long elastic sheet occupies a large proportion of the total length of the anvil, and the doctor is easy to clamp the elastic sheet when clamping, which is not conducive to the smooth connection of the anvil and the puncture shaft. The connection or separation of the strip, in addition, the long elastic piece is easily deformed by external force

Images