Nail anvil with nail guide structure and anastomat comprising nail anvil

Abstract

The invention relates to a nail anvil with a nail guide structure, and nail forming grooves are formed in the nail anvil. Each nail forming groove is formed by combining a front forming part and a back forming part which are symmetric with each other. The side wall of each front forming part is sequentially defined by a first guide slope, a third guide slope and a fourth guide slope. The side wallof each back forming part is sequentially defined by a second guide slope, a fifth guide slope and a sixth guide slope. Thus, on one hand, the alignment accuracy of each suture nail relative to the nail forming groove is effectively guaranteed, and tissue is effectively sutured; and on the other hand, the assembly accuracy requirement of the nail anvil for a nail bin is reduced to a certain extent, so that the requirement for manufacturing accuracy of the nail anvil and the nail bin is reduced, and the manufacturing cost is effectively reduced. Besides, the invention further relates to an anastomat comprising the nail anvil.

Description

technical field [0001] The invention relates to the technical field of medical device manufacturing, in particular to a nail anvil with a nail guiding structure and a stapler including the same. Background technique [0002] In laparoscopic surgery and thoracoscopic surgery, laparoscopic cutting stapler is usually used for cutting and anastomosis of esophagus, stomach, duodenum, small intestine, colon, rectum, appendix, gallbladder, pancreas and spleen in the digestive tract, It is also used in cutting and anastomotic operations such as the lung and trachea in the respiratory tract, and in the bladder and uterus in the urogenital system. Through its application, it can greatly reduce the surgical wound, shorten the operation time and improve the quality of the operation. [0003] Generally speaking, the staple cartridge and the staple cartridge frame are fixed as a whole, and a cutting groove is provided along the length thereof. Place the tissue between the staple bin and ...

AI Technical Summary

Problems solved by technology

In order to ensure that the staples are smoothly introduced into the corresponding staple forming grooves and ensure the final forming quality of the staples, the relative position error between the staple cartridge and the anvil is required to be strictly controlled during the manufacturing and assembling process of the stapler. , which will inevitably greatly increase the production cost

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