Modified drainage for percutaneous transhepatic drainage with strictures of bile ducts

摘要

The utility model refers to medical instruments used for percutaneous transhepatic drainage of the bile ducts and can be used in biliary surgery.;Task of the utility model: restoration of bile outflow (elimination of mechanical jaundice) with simultaneous dosed dilatation and precise location in the narrowing zone of the bile duct. The task is achieved by the fact that the balloon is inflated with a syringe that is located in the middle of the drainage catheter, for additional dilation of the stricture and reliable fixation, an additional X-ray positive mark is placed on it, which should be in the middle of the constriction zone, to increase the efficiency of endobiliary dilatation.;Advantages of external-internal drainage are: restoration of bile outflow (elimination of mechanical jaundice) with simultaneous dosed dilatation and precise location in the narrowing zone of the bile duct.