Direct puncture type fistula step-by-step expansion drainage tube with balloon

Abstract

The invention discloses a direct puncture type fistula step-by-step expansion drainage tube with a balloon, and belongs to the technical field of medical instrument manufacturing. The direct puncturetype fistula step-by-step expansion drainage tube comprises a drainage tube body, a supporting tube and a needle core, wherein the head of the drainage tube body is conical, the drainage tube body isprovided with a spherical air bag and a cylindrical air bag, and a connector is arranged at the tail of a water injection channel in the drainage tube body; side holes are formed in the tube wall between the spherical air bag and the cylindrical air bag; threads are formed in the surface of the connector at the tail end of the drainage tube body, a connecting cap is arranged at the tail of the supporting tube, and threads are formed in the inner uniform wall and the outer wall of the connecting cap and matched with the threads in the surface of a tail structure of the drainage tub body e; thetail of the needle core is provided with a connecting cap, and the inner wall of the needle core is provided with threads matched with threads in the outer wall of the connecting cap of the supportingtube; and the needle core is inserted into the supporting tube, the tail end is screwed down, then the supporting tube is placed into the drainage tube body, and the tail end is screwed down. The direct puncture type fistula step-by-step expansion drainage tube has the advantages of direct puncture, small injury, few complications and simplicity in operation.

Description

technical field [0001] The invention belongs to the technical field of medical device manufacturing, and relates to a direct puncture type fistula tract expansion drainage tube step by step with a balloon. 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 cholecystectomy to remove stones, but biliary tract exploration needs to be performed under general anesthesia. For elderly, high-risk patients who cannot tolerate the risk of general anesthesia, and patients who have undergone multiple laparo...

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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