Method for setting elastic thread in a ligation device and elastic thread ligation device

Abstract

Provided are an elastic thread setting method in an endoloop and an elastic thread endoloop. The elastic thread setting method comprises the steps that one or more elastic threads are arranged along the outer wall of an endoloop spearhead, one or more threading holes is formed in the outer wall of the front end of the spearhead, the front ends of the elastic threads penetrate into the corresponding second ports of the threading holes, penetrate through the threading holes and penetrate out of the corresponding first ports of the threading holes, elastic thread loops are formed in a slipknot mode, the loops are reversely arranged on the outer wall of the front end of the spearhead in a sleeving mode, and the pore diameter of each threading hole is larger than the diameter of the corresponding elastic thread and smaller than the diameter of the knot point of the corresponding slipknot; when the tail ends of the elastic threads are tightened to make the loops get away from the pipe orifice of the spearhead and the knot points of the slipknots are tightened to the first pores, the first pores are taken as acting points, and the elastic threads are continuously tightened to make the pore diameters of the elastic thread loops gradually shortened. The invention further discloses the elastic thread endoloop using the setting method, the structure is simple, operation is convenient, an operation can be completed by one person, misoperation can be avoided, the wound surface of target tissues after the operation is extremely small, and postoperative complications and the probability of bleeding can be reduced.

Description

technical field [0001] The invention relates to medical device technology, in particular to a method for setting elastic threads in a ligation device and the elastic thread ligation device. Background technique [0002] "Hemorrhoid ligation (also known as hemorrhoid rubber ring ligation, hemorrhoid suction ligation, etc.)" is a common method for the treatment of hemorrhoids. ) bandage at the root (or base) of the internal hemorrhoid, thereby using the elastic retraction force of the rubber ring to block the blood supply of the hemorrhoid, making it necrotic, shrinking, and falling off, so as to achieve the purpose of healing. The traditional instruments used to perform ligation in the past are extremely crude, time-consuming, labor-intensive, and prone to complications. In order to change this situation, in the past ten years, there has been an automatic device that makes the ligation operation simple and easy, that is, the automatic hemorrhoid ligation device (also known a...

AI Technical Summary

Problems solved by technology

[0003] CN102727275B discloses a hemorrhoid ligation device, which solves the technical problems that the existing ligation device needs to be troublesome to operate, the operation time is long, and the elastic rubber ring cannot be evenly ligated on the root of hemorrhoids. The adopted scheme is: hemorrhoid ligation Part and hemorrhoid ligation control part, the hemorrhoid ligation control part includes: hand-held ligation device housing, suction piston control slide, speed change and reversing gear, suction piston control trigger, ligation rubber ring push cylinder control slide and sleeve Rubber ring push cylinder control trigger

The use of rubber rings as ligation materials has some inherent disadvantages: ① Due to the inherent characteristics of natural rubber (or latex, silica gel, etc.), the inner diameter of the rubber ring cannot be infinitely small, and generally can only be made into 2.0-2.5mm ( At least not less than 1.5mm), otherwise it is easy to break when the bandage is stretched

[0011] 1. During the operation of the automatic elastic thread ligation device disclosed in this reference document, it is necessary to hold the ligation device with one hand, hold the force point with one hand, and pull the elastic thread with the other hand to reduce the inner diameter of the ring; at least two people are required to complete the operation. Troublesome operation and low work efficiency

[0012] 2. The automatic elastic thread ligation device disclosed in this reference document uses the traction wire to drive the ring to move to the nozzle of the gun barrel until it comes out of the nozzle. It is easy to launch two or more rings at the same time, causing misoperation. The rate is high, resulting in waste during the operation and increasing the cost of the operation

[0013] 3. The automatic elastic thread ligation device disclosed in this comparison document needs to repeatedly set the traction line, which is troublesome to operate

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