Broken calculus flushing drainage device under choledochoscope

Abstract

The invention discloses a broken calculus flushing drainage device under a choledochoscope and belongs to the technical field of medical instrument manufacturing. The device comprises a drainage tubeand a flushing bag, a choledochoscope channel 7 and a water injection channel 8 are arranged in the head of the drainage tube; the body part is formed by nesting an inner cylindrical film and an outercylindrical film, the inner cylindrical film forms a choledochoscope channel 9, continuous longitudinal bonding between the two films forms a water injection channel 10, and other discontinuous longitudinal bonding forms a plurality of longitudinal and annular channels which communicate with one another communicate with an air injection channel at the tail part; and the tail part comprises a choledochoscope channel 14, a water injection channel 15 and a gas injection channel 13, a water injection connector, a gas injection connector and a drainage connector are arranged on the tube wall and communicate with the gas injection channel, the water injection channel and the choledochoscope channel respectively, and annular silica gel pads are arranged at the two ends of the tail part. The device has the advantages that the drainage tube can sleeve the choledochoscope to be placed into an intrahepatic bile duct, and broken calculus, sediment-like stones, bile mud and the like in the bile duct are moved annularly by high-pressure flushing fluid and are sucked out of the body by the negative-pressure drainage tube.

Description

technical field [0001] The invention belongs to the technical field of medical device manufacturing, and relates to a minimally invasive surgical instrument for removing small intrahepatic calculi and biliary sludge, in particular to a choledochoscope for lithotripsy flushing and drainage tube Background technique [0002] Gallbladder and intrahepatic bile duct stones are a common disease, which can induce complications such as acute and chronic cholecystitis, cholangitis, obstructive jaundice, and biliary tract tumors. The traditional treatment methods for gallstones are open cholecystectomy and hepatic lobectomy. Today, with the increasing development of laparoscopic and choledochoscopy techniques, laparoscopic cholecystectomy and biliary exploration have become important means for the treatment of gallstones. [0003] Whether it is laparoscopic cholecystectomy or biliary exploration, it needs to be done under general anesthesia. In addition to the traditional stone forcep...

AI Technical Summary

Problems solved by technology

[0004] Peanut-sized stones can be taken out directly with the stone extraction basket; for stones with a diameter of less than 5mm, because the mesh basket is difficult to remove, an adsorber is often used for stone extraction, but the absorber absorbs fewer stones each time, and repeatedly enters and exits the fistula. Or the common bile duct, it is easy to cause acute cholangitis due to edema of the bile duct, or the edema of the fistula tract makes it difficult to place a drainage tube; for stones larger than 1cm, it is difficult to remove them directly, and microelectrodes and electro-hydraulic lithotripsy are often performed, and then the stones are cleaned and lithotripsy and biliary sludge, because the choledochoscope forceps channel is narrow, gravel and biliary sludge can easily block the choledochoscope forceps channel, which not only prolongs the operation time, but also easily leads to residual stones

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