Loop type bile external drainage tube

Abstract

The invention discloses a loop type bile external drainage tube which comprises a straight tube, an elastic loop tube I and an elastic loop tube II which are connected in sequence. The elastic loop tube I and the elastic loop tube II are in a shape of an Archimedes curve as a whole. A through hole containing the head portion of the elastic loop tube II is formed in the side wall of the elastic loop tube I. The through hole is located in the plane where the Archimedes curve is located. In a working state, the curve is tensioned, so that the head portion of the elastic loop tube II enters the through hole. The tension force of the elastic loop tube I on the wall of a bile duct is increased while the curve is tensioned, and the probability of disengaging of the loop type bile external drainage tube is lowered. After the curve is tensioned, the head portion of the elastic loop tube II enters the through hole, and the wall of the bile duct is not damaged. In the drainage tube pulling out process, stimulation to the bile duct mucosa, the duodenal papilla, the gastrointestinal tract mucosa and the pharyngolaryneal mucosa is avoided, and the acute cholangitis, the acute pancreatitis, upper gastrointestinal bleeding and other complications can be avoided. In the tube pulling out process, the discomfort of a patient can be greatly reduced.

Description

technical field [0001] The invention relates to a bile external drainage tube, in particular to a loop type bile external drainage tube. Background technique [0002] With the continuous development of endoscopic technology and the continuous improvement of its accessories, duodenoscopy (ERCP) has become an important measure for the treatment of hepatobiliary and pancreatic diseases, including common bile duct stones, bile duct injury, bile duct stricture, liver transplantation, etc. Biliary complications, etc. Compared with traditional laparotomy, this technique has the advantages of less trauma, high safety factor, and faster recovery. Under direct vision, it can detect hepatobiliary and pancreatic diseases that cannot be detected by conventional liver, gallbladder, spleen and pancreas CT, ultrasound and magnetic resonance examinations, and treat them at the same time, such as duodenal papillitis, papillary stenosis, parapapillary diverticulum, duodenal Intestinal papill...

AI Technical Summary

Problems solved by technology

[0005] According to the prior art proposed above, it will cause irritation to the bile duct and intestinal mucosa and cause tec

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