Anus retractor

Abstract

The invention discloses an anus retractor which comprises a main ring (1). A plurality of channels (2) extending from inside to outside are circumferentially arranged on the main ring (1), pull wires(3) capable of sliding in the channels (2) penetrate the channels (2), one end of each pull wire (3) is connected with a retractor head (4) capable of internally hooking perianal tissues, and the other end of each pull wire (3) is connected with a movable pull wire (5) capable of moving relative to the main ring (1) and pulling each pull wire (3) to slide in the corresponding channel (2). The anusretractor is simple in structure, convenient to operate, good in stability and uniform in pulling force.

Description

【Technical field】 [0001] The invention relates to an anal hook. 【Background technique】 [0002] Anal retractor plays an important role in exposing the surgical field during rectal and anal canal surgery. It has a wide range of applications and high frequency of use. It is often used for adult rectal anal canal tumors, trauma, and children with Hirschsprung, anal atresia, and rectourethral fistula. In the surgical treatment of diseases such as rectovaginal fistula, due to anatomical factors such as the small space and deep position of the recto-anal canal, the operation space of the recto-anal canal is small, especially in children, and surgical exposure is extremely difficult. , will greatly increase the difficulty of operation, and the operation is prone to complications such as bleeding, urethral injury, vaginal injury, and intestinal anastomotic leakage. [0003] At present, the commonly used retractors for transanal surgery are still simple nail hooks, but there are man...

AI Technical Summary

Problems solved by technology

[0002] Anal retractor plays an important role in exposing the surgical field during rectal and anal canal surgery. It has a wide range of applications and high frequency of use. It is often used for adult rectal anal canal tumors, trauma, and children with Hirschsprung, anal atresia, and rectourethral fistula. In the surgical treatment of diseases such as rectovaginal fistula, due to anatomical factors such as the small space and deep position of the recto-anal canal, the operation space of the recto-anal canal is small, especially in children, and surgical exposure is extremely difficult. , will greatly increase the difficulty of operation, and the operation is prone to complications such as bleeding, urethral injury, vaginal injury, and intestinal anastomotic leakage

[0003] At present, the commonly used retractors for transanal surgery are still simple nail hooks, but there are many defects in the use of nail hooks to pull and expose the anus: 1. Reduce the operation space: when the nail hooks are pulled and exposed, the nail hooks need to be placed in the anal canal to the anus. Retraction, because the retractor itself occupies a certain operating space, will greatly reduce the operating space; 2. Insufficient stability: As the assistant continues to expose the anus with force, as the operation time prolongs, the position may shift. Due to the limited operating space, small deviations and possible exposure failures require readjustment and time-consuming operation; 3. Uneven traction force: due to the manual application of tension to the retractor, the traction force is uneven, which may easily lead to anatomical displacement and increase the surrounding area. Risk of secondary organ damage; 4. Waste of human resources: At least 1-2 assistants are required to continuously apply force to the retractor during the operation to keep the anus dilated, and increasing the number of surgical personnel will limit the operating space of the surgeon to a certain extent

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