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

Abstract

The invention discloses a direct puncture type fistula step-by-step expansion drainage tube with balloons, and belongs to the technical field of medical equipment manufacture. The direct puncture typefistula expansion drainage tube comprises a drainage tube, a support tube and a needle core; the head of the drainage tube is conical, a spherical air bag and a cylindrical air bag are arranged, a connection head is arranged at the end of an inner water injection passage, and side holes are arranged in a wall between the spherical air bag and the cylindrical air bag; the surface of a tail joint of the drainage tube is provided with threads, a connecting cap is arranged at the tail part of the support tube, the inner wall and the outer wall of the connecting cap are respectively provided withthreads, and the thread in the inner wall of the connecting cap is meshed with the thread on the surface of the tail structure of the drainage tube; and the end of the needle core is provided with a connection cap, and the inner wall of the connection cap is provided with threads which are meshed with the threads on the outer wall of the connecting cap of the support tube. The needle core is inserted into the support tube and the tail end is tightly srewed; and then the support tube is placed into the drainage tube and the tail end is tightly screwed. The direct puncture type fistula expansiondrainage tube has the advantages of direct puncture, less injury, few complications and simple 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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