Fistula step-by-step expansion type drainage tube with balloon

Abstract

The invention discloses a fistula step-by-step expansion type drainage tube with a balloon, and belongs to the technical field of medical instrument manufacturing. The fistula step-by-step expansion type drainage tube comprises a drainage tube body and an inner core, wherein the head of the drainage tube body is conical, the drainage tube body is provided with a spherical air bag and a variable-outer-diameter cylindrical air bag, and a connector is arranged at the tail of a water injection channel arranged inside the drainage tube body; side holes are formed in the tube wall between the spherical air bag and the cylindrical air bag; and threads are formed in the surface of the connector at the tail of the drainage tube body, a connecting cap is arranged at the tail of the inner core, threads are formed in the connecting cap and matched with the threads in the surface of the tail structure of the drainage tube body, and the inner core is placed in the drainage tube body and the tail connector is screwed down. The fistula step-by-step expansion type drainage tube has the advantages that the balloon is arranged at the head end of the fistula step-by-step expansion type drainage tube,displacement of the drainage tube body is avoided, the cylindrical air bag is arranged on the drainage tube body, the fistula is gradually expanded in a gradual pressurizing mode, tearing bleeding ofthe fistula cannot be caused, and pain and other side reactions are smaller.

Description

technical field [0001] The invention belongs to the technical field of medical equipment manufacturing, and relates to a step-by-step expansion drainage tube for fistula 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 laparotomies, percutaneous...

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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