Caliber-adjustable circular knife

Abstract

The invention provides a caliber-adjustable circular knife for treating anal fistula. The caliber-adjustable circular knife is mainly composed of a caliber-adjustable composite circular blade (1), anopening and closing connection auxiliary device (2) and a circular knife handle (3); each sub blade in the composite circular blade (1) is divided into a cutting edge part (11) and a knife back part (12), and the composite circular blade (1) is connected with the circular knife handle (3) through a directional hinge (21); and an elastic support rod (22) for providing expansion and convergence functions is connected with the knife handle and the blade. The caliber-adjustable circular knife conforms to the modern advanced medical concept, and the normal anatomical form and physiological functions of a patient are protected as much as possible while diseases are treated. The caliber-adjustable circular knife can be suitable for fistula with different pipe diameters through the adjustable caliber. The embarrassment of most anorectal doctors in the fistula stripping process (the anus function is damaged due to excessive stripping, and the fistula stripping operation is prone to failing) issolved through the standardized operation process, and the operation time is greatly shortened. The caliber-adjustable circular knife is safe and reliable in anal fistula stripping, easy and convenient to operate and easy to popularize, solves the technical problem of technical tough problem in anal function protective surgery, certainly enables the anal fistula function protective surgery to be widely popularized, and benefits patients.

Description

technical field [0001] The invention relates to a medical instrument, in particular to a circular knife with adjustable caliber for fistula operation. Background technique [0002] At present, for anal fistula, surgical treatment is mainly adopted. Surgery is roughly divided into two categories, one is surgery that focuses on healing, and the other is surgery that focuses on the protection of anal function. The former has a high cure rate, but the anal function is damaged, and the latter is often less than ideal in order to protect anal function. . The current trend is that curative surgery is gradually giving way to anal function-preserving surgery, such as the latest popular surgery----Ligation of Intersphincteric Fistula (LIFT), which requires dissection of the fistula, which is difficult for ordinary doctors. It is a severe test, and there are often two results: 1. Excessive sphincter muscle is easily damaged when stripping the fistula, which makes the operation lose t...

AI Technical Summary

Problems solved by technology

The current trend is that curative surgery is gradually giving way to anal function-preserving surgery, such as the latest popular surgery----Ligation of the Intersphincteric Fistula (LIFT), which requires dissection of the fistula. It is a severe test, and there are often two results: 1. Excessive sphincter muscles are easily damaged when stripping the fistula, which makes the operation lose the significance of anal function protection; failed operation

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