Setting method of elastic thread in ejection type ligation device and elastic thread ligation device

Abstract

The invention provides a setting method of an elastic thread in an ejection type ligation device and an elastic thread ligation device. The setting method of the elastic thread comprises steps as follows: a loop is formed by the front end of the elastic thread in a slipknot form, the loop is arranged in a loop push piece at the front end of a gun head in a sleeving manner, a slipknot of the loop is clamped outside a thread clamping groove in the front end of the loop push piece, the elastic thread is arranged in the thread clamping groove, and the tail end of the elastic thread is finally clamped into a clamping groove in a gun handle and fixed in a direction of a gun barrel; the loop push piece is propped against an infected part, when an ejection block drives the loop push piece to move forwards, the loop is enabled to be separated from the loop push piece and is arranged on the infected part in a sleeving manner, the tail end of the elastic thread is taken down and tightened, the slipknot of the loop is propped by the thread clamping groove of the loop push piece, and the elastic thread is continuously tightened, so that the pore diameter of the loop of the elastic thread is reduced gradually. The invention further provides an ejection type elastic thread ligation device adopting the method. The ejection type elastic thread ligation device is simple in structure, convenient to operate, accurate in operation and applicable to treatment of hemorrhoids and other anorectal diseases, a wound surface of postoperative target tissue is small, and the probability of postoperative complications and hemorrhage 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 push-out type ligation device and a push-out type elastic line ligation device adopting the elastic thread setting method. 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 ea...

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 can be equipped with at least one elastic thread at the same time for multiple surgical operations, but the ring sleeve is driven by the traction line to move to the mouth of the gun barrel until it reaches the mouth of the barrel. In the process of prolapse, it is easy to launch two or more rings at the same time, and the misoperation 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 be set with a traction line during the surgical operation, and every time a loop is fired, the traction line needs to be set once, which is very troublesome to operate

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