Elastic thread ligation device and elastic thread setting method

Abstract

The invention discloses an elastic thread ligation device and an elastic thread setting method; a gun head comprises a gun head body, a pull rod mount, a gun head sleeve, an elastic thread pull rod, and a gun head fixing sleeve; the outer wall of the gun head of the ligation device is provided with at least one elastic thread and a corresponding traction line, and the two penetrate one thread hole; the front end of the elastic thread forms a slipknot bail sleeved on the gun head fixing sleeve, and is hooked backwards on a hook; the front end of the traction line is connected with the elastic thread; when the elastic thread is released from the hook, the traction line and the elastic thread are simultaneously drawn, so the bail of the elastic thread and the traction line can leave the gun head; the elastic thread is continuously pulled, the thread hole on the gun head fixing sleeve can press the slipknot on the elastic thread bail; a bail hole diameter of the elastic thread can be reduced under the effect of two opposite forces. The elastic thread ligation device is simple in structure, convenient in operation, so operation can be completed by one person with no maloperation; postoperation wound surface of a target organ is very small, thus reducing postoperation complications and hemorrhagic rate.

Description

technical field [0001] The invention relates to medical device technology, in particular to an elastic thread ligation device and a method for setting the elastic thread in 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 d...

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

[0013] 3. The automatic elastic thread ligation device disclosed in this comparison document needs to reset the traction line when changing the gun head, which is troublesome to operate

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