Directional Positioning Retractor for Selective Tissue Resection

Abstract

The invention relates to a selective tissue removing directional positioning drawing device. The selective tissue removing directional positioning drawing device includes a swinging positioning rod, a support and a base for being arranged on an apparatus; a positioning column hole is formed in the base, a positioning column supported by an elastic member is arranged in the positioning column hole formed in the base; a U-shaped groove is formed in the support which is inserted in the base, and is used for allowing the limited positioning column to stretch out of the base and be pressed against a positioning groove formed in the bottom of the support; the swinging positioning rod includes a bottom plate and two side plates which form a longitudinal channel for allowing a purse thread to pass; at least two front thread grooves are formed in the front end of the swinging positioning rod, and at least two back thread grooves are formed in the back end of the swinging positioning rod; the swinging positioning rod is hinged in the U-shaped groove of the support; a swinging seat for bearing the swinging positioning rod is formed in the bottom of the U-shaped groove of the support; and side walls of the U-shaped groove of the support limit the two side plates of the swinging positioning rods. The selective tissue removing directional positioning drawing device is reasonable in structure, is easy to demount, is reliable in positioning, and can easily lead and tie the purse thread so as to allow the drawing direction of the purse thread to be perpendicular to an anal tube and an anal wall.

Description

technical field [0001] The invention relates to a directional positioning retractor for selective tissue resection, which belongs to the technical field of medical instruments. 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 more tissues are resected ...

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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