Closing driving mechanism and medical anastomat comprising same

Abstract

The invention provides a closing driving mechanism and a medical anastomat comprising the same. The closing driving mechanism comprises a movable handle, a first sliding block, a maintaining part, a closing driving part and an actuating rod, wherein the initial position of at least part of the structure of the first sliding block is located at the near end of the maintaining part; the actuating rod is provided with a pressing part and a yielding part; the initial positions of the pressing part and the yielding part of the actuating rod are both located at the near end of the maintaining part;when the movable handle is held in an initial state, the first sliding block moves towards the far end to be embedded into the maintaining part; and after percussion of the anastomat is completed, themaintaining part is automatically separated from the first sliding block. According to the invention, the position of the closing driving part is limited when a staple head part is closed through embedding of the maintaining part and the first sliding block, so that a closing pull piece is prevented from moving towards the far end of the anastomat when percussion of the anastomat is performed; and after percussion of the anastomat is completed, the maintaining part does not limit the position of the closing driving part any more, and a staple cabin and a staple anvil can be automatically opened.

Description

technical field [0001] The invention relates to the technical field of medical instruments, in particular to a closing drive mechanism and a medical stapler including the same. Background technique [0002] Gastrointestinal disease is one of the diseases with high incidence in human beings. During the treatment process, medical staplers are often used instead of doctors' manual operations to anastomose physiological tissues such as the digestive tract. The medical stapler is a common surgical instrument, most of which use the axial inward binding method to form an end-to-end or end-to-side anastomosis of physiological tissues such as the esophagus, stomach, and intestinal tract during surgery. It is restrained and accommodated in the medical stapler. After firing, a circular anastomosis is formed on the tissue, and the human body channel is reconstructed. [0003] In the prior art, a medical stapler includes a medical stapler body, an operating handle movably connected to t...

AI Technical Summary

Problems solved by technology

[0004] In the existing closing drive mechanism, the structure is relatively complicated, and in the process of firing the stapler, the closing tab may be displaced toward the distal side of the stapler, which affects the closing effect between the staple cartridge and the anvil. adverse effect on the outcome of surgery

In addition, in the existing closing drive mechanism, after the stapler is fired, the staple cartridge and the anvil remain closed, and the doctor needs an additional operation step to open the staple cartridge and the staple anvil after the operation of the stapler is completed.

Moreover, after the firing of the stapler is completed, the doctor needs to pull back the push knife rod so that the knife returns to the initial position along the knife groove. The knife will not return smoothly to its original position due to resistance from the tissue between the cartridge and anvil

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