Direct puncture type fistula stage-by-stage expansion type drainage tube

Abstract

The invention relates to a direct puncture type fistula stage-by-stage expansion type drainage tube, and belongs to the technical field of medical appliance manufacturing. The direct puncture type fistula stage-by-stage expansion type drainage tube comprises a drainage tube, a support tube and a needle core which are connected through tail parts; the drainage tube is divided into a head part, a body part, a tail part and a connecting head; the head part is a single-channel loop tube; a side hole is formed in the pipe wall of the head part; a traction line connected with the outer side of the pipe wall of the front end enters a channel 7 through a through hole in the tail end wall of the head part, passes through a channel 10 and a channel 13, and is led out from a through hole in the tailend pipe wall of the tail part; the body part comprises the channel 10 and the channel 11; the channel 10 communicates with the channel 7; the body is in a concave shape and is wrapped with a cylindrical balloon membrane; a cylindrical balloon membrane cavity is internally provided with a through hole and communicates with the channel 11; the tail part of the cylindrical balloon membrane cavity comprises a channel 13 and a channel 14; the channel 13 communicates with the channel 10; the channel 14 communicates with the channel 11; the connecting head is provided with a connector 15 and a connector 16; the connector 15 communicates with the channel 13; the connector 16 communicates with the channel 14; and the outer wall of the connecting head is provided with a traction line slot. The direct puncture type fistula stage-by-stage expansion type drainage tube has the advantages of less damage, less complication 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-type drainage tube step by step. 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 of gallstones is open cholecystectomy and liver lobectomy. With the development of laparoscopy and choledochoscopy, laparoscopic cholecystectomy and bile duct 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 tra...

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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