Firing mechanism and anastomat

Abstract

The invention provides a firing mechanism and an anastomat. The firing mechanism comprises a nail pushing assembly, wherein the nail pushing assembly comprises a firing rod, a connecting part and a nail pushing rod which are sequentially arranged from the near end to the far end of the anastomat, the nail pushing rod is linked with the connecting part, and the firing rod is selectively linked withthe connecting part. According to the firing mechanism and the anastomat, when a nail anvil assembly does not reach a proper position, the connecting part is in a first state, the firing rod is not linked with the connecting part, and the false firing of the anastomat will not happen even if a handle is held; in a resetting process after firing, a safety device is in a fourth state, the connecting part is guided to enter the first state again, the connecting part is always in the first state before the next operation preparation is completed, and the anastomat cannot be fired again; and therefore, the false firing and the secondary firing when a fired nail bin is not replaced can be effectively prevented, and the use safety of an instrument is improved.

Description

technical field [0001] The invention relates to the technical field of medical instruments, in particular to a firing mechanism and a stapler. Background technique [0002] Gastrointestinal disease is one of the diseases with high incidence in human beings. In the course of treatment, a circular stapler is often used instead of the doctor's manual operation to anastomose physiological tissues such as the digestive tract. The circular tubular stapler is a common surgical instrument, most of which use the axial inward binding method to form end-to-end or end-to-side anastomosis on physiological tissues such as the esophagus, stomach, and intestinal tract during surgery. The segmental tissue is retracted and accommodated in the stapler. After firing, a circular anastomosis is formed on the tissue, and the human body channel is reconstructed. [0003] In the prior art, a circular tubular stapler includes a stapler body, an operating handle movably connected to the stapler body,...

AI Technical Summary

Problems solved by technology

However, when the circular stapler is actually used for surgery, the operator may accidentally hold the operating handle when the distance between the anvil assembly and the staple cartridge does not reach the proper position, resulting in false firing, resulting in surgical failure. may even lead to medical malpractice

[0005] In addition, after the operator completes a firing with the stapler, he may perform the next operation without replacing the new staple cartridge due to carelessness or lack of experience, which will lead to medical accidents, such as resection but There is no stitching, causing a great safety hazard

Images