Fistula automatic expansion type puncture drainage tube

Abstract

The invention provides a fistula automatic expansion type puncture drainage tube, which comprises a drainage tube body, a supporting tube and a needle core, and the drainage tube body comprises a tubesection I, a tube section II, a tube section III and a connector; the tube section I is a single-channel loop pipe, and a channel I is arranged in the tube section I; a side hole is formed in the tube section I; a channel II is formed in the tube section II, and the pipe wall is wrapped with a cylindrical water absorbing material and a polyethylene balloon film; a channel III is formed in the tube section III; a channel IV is formed in the connector; the tail end of the supporting tube is connected with the connector; the supporting tube body is inserted into the channel IV and penetrates outof the channel I; the tail end of the needle core is connected with the support tube; the needle core body is inserted into and penetrates out of the channel in the supporting tube; the tube sectionI is connected with a pull wire, and the pull wire sequentially penetrates through the channel I, the channel II and the channel III and is led out of the connector through the channel IV. Percutaneous transhepatic duct and gallbladder puncture can be directly carried out, meanwhile, the gradually-filled polyethylene balloon gradually expands the fistula, the fistula expansion range can be enlarged, the replacement frequency of the drainage tube is reduced, the disease course is shortened, and the manufacturing cost is low.

Description

technical field [0001] The present invention relates to the field of minimally invasive medical technology and surgical instrument technology, in particular, to a puncture and drainage tube with self-expanding fistula tract, which is a microscopic device for treating biliary system diseases after percutaneous transhepatic bile duct puncture and fistula tract dilation. Surgical instruments. Background technique [0002] Gallbladder and extrahepatic bile duct stones are a common disease, which can induce acute and chronic cholecystitis, cholangitis, obstructive jaundice, biliary tract tumors and other complications. The traditional treatment for gallstones is open cholecystectomy and hepatic lobectomy. Today, with the development of laparoscopy and choledochoscopy, laparoscopic cholecystectomy and biliary tract exploration have become important methods for the treatment of gallstones. [0003] Whether it is laparoscopic gallbladder stone removal or biliary tract exploration, ...

AI Technical Summary

Problems solved by technology

There are two ways to dilate the fistula tract. One is to use different types of hard dilation tubes to expand the fistula tract in one operation. The other is intermittent replacement of thicker biliary drainage tubes. This method does not require anesthesia, but the interval between two operations is longer, resulting in longer treatment time for the disease

If the interval time is short or a thicker type of drainage tube is selected, it will not only increase the pain of the patient, but also increase the difficulty of tube placement

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