Rotary-feedingligature clip running applier with replaceable chuck

Abstract

The invention discloses a rotary-feeding ligature clip running applier with replaceable chuck, and belongs to the field of medical clip appliers. The rotary-feeding ligature clip running applier comprises a shell, a trigger, an outer tube, a clip head mechanism, a clip bin mechanism, a clip head clamping and closing transmission mechanism and a clip pushing mechanism, wherein the clip bin mechanism of the continuous-shooting clip applier adopts a clip storage disc design for rotating clip replacement, and the clip pushing mechanism is used for pushing ligature clips in a clip storage disc to the clip head mechanism for clip applying; therefore, the clamping bin mechanism occupies a small size in the length direction of the clip applier, the length of an outer tube of the clip applier is conveniently and reasonably set, and the operation flexibility and stability of the clip applier are improved; moreover, the ligature clips are uniformly and independently arranged in the circumferential direction of the clip storage disc, so that the continuous shooting number of the clip applier can be flexibly set; meanwhile, the ligature clips do not influence one another, the clip applying action is more stable and reliable, the clip storage disc is simple and convenient to replace, and the clip applier is convenient to reuse; therefore, the ligation clip is compact and stable in connection before and after continuous percussion action, and flexible and convenient to operate.

Description

technical field [0001] The invention relates to a ligation clip applicator, more specifically, to a rotary clip-feeding ligation clip continuous hair clip applier with a replaceable chuck. Background technique [0002] In minimally invasive surgery, ligation clips are often used to close human blood vessels and other luminal tissues, and the ligation clips need to be used in conjunction with special clip appliers. At present, there are two types of clip appliers used in conjunction with ligation clips: single-shot clip appliers and continuous-shot clip appliers. Wherein, the single clip applicator can only install a single ligation clip at a time for operation. However, in the actual process of various minimally invasive surgeries, it is necessary to close multiple parts of the lumen tissue. Therefore, the current single-piece installation method requires several ligation clip installations and repeated entry and exit of the human surgical cavity to perform ligation clip cl...

AI Technical Summary

Problems solved by technology

However, the clips of this type of continuous clip applier are hemostatic clips or ligation clips arranged in a row in the clip chamber, and the clips are pushed in a straight line by the driving mechanism. The driving methods currently mainly include spring push clips and push rod push clips. There are two kinds of clips, the way of spring pushing the clip can refer to the "semi-automatic medical continuous clip applier with biological clip box" disclosed in Chinese patent No. ZL201610437045. After each clip is applied, the spring pushes the ligation clips in the magazine forward. The disadvantage of this method is that a spring with a large compression stroke is required. It is easy to have the problem of unstable push clip in the late stage of clip application; moreover, the more ligation clips are installed in the clip chamber, the longer the spring is required, resulting in the distance between the handle operating part of the clip applicator and the clamp head part. Long, which is not conducive to the operating flexibility and stability of the clip applier

The method of pushing the push rod to push the clip can be referred to the "continuous-fire clip applier" disclosed in Chinese Patent Application No. 201910439205.2. The disadvantage of this method is that the rear section of the push rod cooperates with the trigger stop mechanism is longer, which reduces the operational flexibility of the clip applier; and, in order to reduce the size of the rear part of the clip applier, it is often necessary to reduce the storage capacity of the ligation clips in the clip bin. Clip volume, resulting in a reduction in the number of bursts

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