Endoscopic surgery cutting stapler with elastic neck ring

Abstract

The invention relates to an endoscopic surgery cutting stapler with an elastic neck ring. The cutting stapler comprises a stapler body, an executing head, a connection stapler body, an extension pipe of the executing head and an operating mechanism for controlling the movement of the executing head, wherein the executing head consists of an executing rack, a sliding bar, a nail cartridge and a nail anvil; the sliding bar, the nail cartridge and the nail anvil are arranged on the executing rack; the nail anvil can rotate relatively to the nail cartridge; the periphery of the near end of the executing rack is covered with the elastic neck ring; the edge of the far end of the elastic neck ring closely sticks to the edge of the near end of the nail anvil; when the nail anvil rotates to be in an opening state relative to the nail cartridge, the elastic neck ring is pressed by the nail anvil to perform elastic deformation, the edge of the far end of the elastic neck ring closely sticks to the edge of near end of the nail anvil all the time; and when the nail anvil rotates to be in an closing state relative to the nail cartridge, the edge of the far end of the elastic neck ring return to closely sticks to the edge of near end of the nail anvil. By adopting the invention, the technical effects of reducing the processing and assembling difficulties of each part in the executing head and the product cost can be achieved; and the product is more convenient to use.

Description

technical field [0001] The invention relates to an endoscopic surgical cutting stapler used in thoracoscopic surgery, in particular to an endoscopic surgical cutting stapler with an elastic collar, which belongs to the field of medical instruments. Background technique [0002] In laparoscopic surgery, laparoscopic surgical cutting and staplers are usually used for cutting and anastomosis of the esophagus, stomach, duodenum, small intestine, colon, rectum, appendix, gallbladder, pancreas and spleen in the digestive tract. Resection and anastomosis of the lung and trachea in the respiratory tract are also used in the resection and anastomosis of the bladder and uterus in the genitourinary system, which can reduce operation time and improve operation quality. [0003] Existing laparoscopic surgical cutting staplers include various laparoscopic surgical cutting staplers introduced in US Patents 20080308602, 20090206124 and 20090206137. When using a laparoscopic surgical cuttin...

AI Technical Summary

Problems solved by technology

Another unsatisfactory part of the endoscopic surgical cutting stapler of this style is that when the slide bar is positioned at the stepped place at the proximal end of the nail anvil, the slide bar is out of contact with the nail anvil, and the nail anvil rotates under the action of the spring Entering the open state, because the force closure between the slide bar and the nail anvil that originally existed under the action of the spring disappears instantaneously at this time, so there will be an anvil bouncing phenomenon that may damage the non-cutting and anastomotic organ tissue around the execution head, and this The bouncing phenomenon of the nail anvil also affects the precise adjustment of the opening and closing angle of the nail anvil

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