Swinging positioning mechanism for selective tissue removing directional positioning drawing device

Abstract

The invention relates to a swinging positioning mechanism for a selective tissue removing directional positioning drawing device. The swinging positioning mechanism includes a swinging positioning rod; the swinging positioning rod includes a longitudinal channel formed by a bottom plate and two side plates, wherein a purse thread can pass through the longitudinal channel; and at least two front thread grooves for limiting the purse thread are arranged on the front end of the swinging positioning rod, and at least two back thread grooves for supporting the purse thread are arranged on the back end of the swinging positioning rod. According to the invention, the position of the purse thread can be adjusted according to the position of a diseased tissue of a patient, the determined purse thread can be limited by the front thread grooves on the front end and then is drawn to the back thread grooves on the back end through the longitudinal channel, the purse thread can accurately draw a tissue to be removed in the direction outside the anus and parallel to the direction of an anal tube, the drawing direction of the purse thread is perpendicular to the anal tube and a wall of a rectum, it is ensured that a drawing point is the center of the tissue to be removed, and then a doctor can easily and accurately cut the selected tissue, the operation is safe, labor resources and material resources can be saved, and the operation efficiency can be improved.

Description

technical field [0001] The invention relates to a swing positioning mechanism for a selective tissue resection directional positioning retractor, which belongs to the technical field of medical devices. Background technique [0002] Curved cutting staplers are used more and more widely in the selective tissue resection of the lower rectum. However, the traditional curved cutting stapler uses the purse string pull-down method during the operation, that is, the tissue to be resected is pulled outward from the anus in a direction parallel to the anal canal with the purse string. However, when the doctor pulls the purse string on the tissue to be resected, due to the special anatomical relationship of the lower rectum, the rectal mucosa closer to the anus is relatively fixed, while the mucosa farther away from the anus is relatively loose, so the purse string is produced at the fixed line. The problem of uneven resection of the upper and lower tissues of the fixed line is that ...

AI Technical Summary

Problems solved by technology

However, when the doctor pulls the purse string on the tissue to be resected, due to the special anatomical relationship of the lower rectum, the rectal mucosa closer to the anus is relatively fixed, while the mucosa farther away from the anus is relatively loose, so the purse string is produced at the fixed line. The problem of uneven resection of the upper and lower tissues of the fixed line is that more tissues are resected on the upper part of the fixed line, while less is resected on the distal end. It is impossible to pull the tissue to be resected out of the anus in a direction parallel to the anal canal during the pull-down operation of the purse-string wire. , making it difficult for doctors to accurately select the resection site during the operation. For tumor patients, the tumor cannot even be completely resected, and the goal of radical treatment cannot be achieved.

Furthermore, since the purse string is pulled by surgical forceps during the pulling process, it not only requires personnel to assist in the operation, but also it is not easy to tie the purse wire tightly when knotting, and the operation time is longer

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