Water jet lithotripsy flushing catheter for choledochoscope

Abstract

The invention discloses a water jet lithotripsy flushing catheter for a choledochoscope, and belongs to the technical field of medical instrument manufacturing. The device is divided into a tool bit,a tube body and a tail part. The tool bit is made of a multi-channel hard metal material and is of a cylindrical shape; the upper surface of the tool bit is an arc-shaped concave surface; a suction channel is formed in the center of tool bit; annularly-arranged water inlet channels are formed in the tube wall around the suction channel and water outlet channels are L-shaped; high-speed water flowsjetted out of water outlet holes are gathered at one point in a radial mode; and an annular metal tube is arranged at the bottom end and communicates with the tool bit and the water outlet channels of the body part; the tube body is a double-channel plastic tube and comprises a suction channel and a water inlet channel; the tail part of the water inlet channel is L-shaped and communicates with ahard single-channel metal joint with threads on the surface; the water inlet channel of the body part is wrapped by a soft metal tube and a steel wire tube spirally wound outside the soft metal tube;and the tail part is a single-channel hard plastic tube of which the outer wall is provided with threads. The water jet lithotripsy flushing catheter has the advantages of suitability for lithotripsyof all calculuses, high efficiency and good safety.

Description

technical field [0001] The invention belongs to the technical field of medical equipment manufacturing, and relates to a minimally invasive medical technology and surgical equipment, which are used for lithotripsy under a choledochoscope, in particular to a catheter for rinsing a catheter with a water knife for 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 surgica...

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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