Expansion device for colorectal obstruction

Abstract

The invention discloses an expansion device for colorectal obstruction. The device comprises: an expansion assembly; a liquid injection pipe which is arranged on an expansion stent, wherein the left end of the liquid injection pipe extends leftwards to the left end part of the expansion stent, the right end of the liquid injection pipe extends rightwards out of the expansion stent, and a pluralityof side flow holes which are distributed at intervals are formed in the liquid injection pipe corresponding to the expansion stent; a conveying part which is used for conveying the expansion stent into the rectum obstruction part; and a pull-out piece which is used for pulling out the expansion assembly from the rectum obstruction part. The expansion stent is a plastic stent, not only has transverse supporting force, but also has longitudinal compliance, and is simple to embed; and an air bag is arranged at the left end part of the plastic stent, after the plastic stent is placed in place, the air bag is located in the intestinal tract at the inner end of the obstruction portion, the air bag is blocked in the intestinal tract at the inner end of the obstruction portion due to the fact that the diameter of the filled air bag is larger than that of the plastic stent at the corresponding position, the plastic stent is prevented from moving or falling off from inside to outside, and the probability of stent displacement is effectively reduced.

Description

technical field [0001] The invention relates to a medical device, in particular to an expansion device for colorectal obstruction. Background technique [0002] The morbidity and mortality of colorectal cancer in my country are on the rise, and most patients are already in the middle and late stages when they are discovered. Advanced colorectal cancer can cause intestinal obstruction. [0003] Currently, common clinical treatment methods for intestinal obstruction include surgical tumor resection, colostomy, stent placement, and intestinal obstruction catheter placement. For elderly or poor patients, due to the high risk and trauma of surgical resection or colostomy, clinically, stent placement or intestinal obstruction catheter placement is usually used to solve the obstruction problem. Traditional ileus catheters can alleviate the symptoms of obstruction in patients, but they are inconvenient to carry and cannot eradicate stenosis. They need to be carried for a long time ...

AI Technical Summary

Problems solved by technology

However, the existing self-expanding wire braided internal stents often have complications such as stent displacement, shedding, restenosis, and bleeding.

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