Water jet scalpel lithotripsy catheter for choledochoscope

Abstract

The invention discloses a water jet scalpel lithotripsy catheter for a choledochoscope, and belongs to the technical field of medical instrument manufacturing. The water jet scalpel lithotripsy catheter is divided into a scalpel head, a high-pressure tube body and a connector. The scalpel head is made of a hard metal material and is columnar, the upper surface of the scalpel head is an arc-shapedconcave surface, annularly-arranged water outlets are formed in the concave surface, and a water outlet channel is formed in the scalpel head; the center of the bottom surface of the scalpel head is an arc-shaped concave surface, annularly arranged water inlets are formed in the concave surface, and a water inlet channel is formed in the scalpel head; and high-speed water flow ejected from the water outlets are radially converged at one point. The high-pressure tube body is a single-channel tube and is divided into three layers, the inner layer is a soft metal tube, the middle layer is a steelwire spirally wound outside the soft metal tube, and the outer layer is polyethylene plastic wrapping the spiral steel wire. The connector is a single-channel hard metal tube, and a spiral is arranged outside the tube wall. The water jet scalpel lithotripsy catheter has the advantages that the water jet scalpel lithotripsy catheter is suitable for breaking all calculi, the efficiency is greatly improved, and the safety is improved.

Description

technical field [0001] The invention belongs to the technical field of medical device manufacturing, and relates to a minimally invasive medical technology and an operation device, which are used for lithotripsy under a choledochoscope, in particular to a lithotripsy catheter with a water knife for a choledochoscope. Background technique [0002] Gallstone is a common clinical disease and frequently-occurring disease, among which gallstone can induce acute cholecystitis, acute cholangitis, obstructive jaundice, acute pancreatitis and other complications, persistent biliary obstruction can cause cholestatic cirrhosis, liver function failure, and even endanger the patient's life. [0003] Traditional surgical methods for gallstones include: liver resection, cholangiojejunostomy, and liver transplantation. With the development of minimally invasive technology and the increasing awareness of the protection of organ function, choledochoscopy is the most common surgical method fo...

AI Technical Summary

Problems solved by technology

The above technique has a good lithotripsy effect on hard cholesterol stones, but is less effective on relatively soft pigment gallstones

Secondly, after inserting the gravel guide wire through the choledochoscope clamp channel, the water supply space of the clamp channel becomes smaller, and the water supply volume at the end of the biliary tract lens is small, resulting in gravel powder polluting the field of view of the endoscope, which affects the process of lithotripsy

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