Spiral internal biliary drainage tube

Abstract

The invention discloses a spiral internal biliary drainage tube, which comprises a spiral tube, wherein a plurality of through holes I are arranged on the outer wall of the spiral tube; the spiral tube is 7-11cm long, the spiral tube is 1-2mm in inner diameter, the spiral tube is 4-5mm in outer diameter, the spiral tube includes 2-5 cycles and the spiral tube is 5-8.5Fr in pipe diameter. The spiral tube disclosed by the invention has an anti-sliding function, and the spiral internal biliary drainage tube is low in probability of internal displacement or takeoff; the drainage tube is capable of preventing biliary wall mucosa from being adsorbed on and from blocking the through holes I and is conducive to the drainage of infectious thick bile; the bile is discharged into duodena through the through holes I and the inner cavity of the spiral tube, and the bile also flows out through an inner cavity formed by the spiral tube; the main body of the spiral tube has an effect on compressing stones in common bile duct; the drainage tube, when preventing the stones in the common bile duct from displacing, can bring about a friction effect on the stones through the sidewall thereof, so that the volume of the stones is diminished to create conditions for secondary stone removal through ERCP (endoscopic retrograde cholangiopancreatography).

Description

technical field [0001] The invention relates to a drainage tube, in particular to a spiral biliary 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. Compared with traditional open surgery, this technology has the advantages of less trauma and safety. High coefficient, fast recovery and other advantages. Endoscopic internal biliary drainage (ERBD) is widely used in common bile duct stones, acute obstructive suppurative cholangitis, bile duct injury, bile leakage, bile duct stricture, biliary complications after liver transplantation, malignant obstructive jaundice, etc. In the treatment of diseases, through the establishment of temporary channels, the purpose of relieving obstruction, reducing biliary pressure, and promoting the repair of damaged parts can be achi...

AI Technical Summary

Problems solved by technology

[0003] At present, the internal biliary drainage tubes of clinical application include: linear drainage tube, single pigtail drainage tube and double pigtail drainage tube, wherein the linear drainage tube is the most widely used clinically, but the drainage tube has the following deficiencies: 1. The drainage tube wall Smoother, the incidence of postoperative drainage tube displacement is higher. If the drainage tube is internally displaced to the intrahepatic bile duct, it may induce biliary obstruction, acute cholangitis, and liver abscess; if it is externally displaced, the drainage tube is completely If it falls off, it loses the function of supporting bile drainage; if it is not completely prolapsed, the straight end of the drainage tube is likely to irritate the wall of the bile duct, causing discomfort symptoms such as epigastric pain, nausea, and vomiting, and even intestinal perforation in severe cases; 2 1. The side hole on the wall of the drainage tube is circular with a small diameter, which is prone to blockage and cannot fully drain viscous bile; 3. There is no gap between the side wall of the drainage tube and the surrounding duodenal papilla tissue, and bile can only pass through the lumen of the drainage tube 4. If the lumen and side holes of the drainage tube are blocked, common bile duct stones will easily cause secondary obstruction of the biliary tract after the drainage tube is pressed

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