Mesh basket calculus removing device with biliary tract flushing function

By integrating flushing and stone removal functions, the basket stone retrieval device solves the problems of long operation time and high risk caused by repeated adjustments of the cholangioscope and flushing tube in the existing technology, and achieves efficient and safe bile duct cleaning and stone removal.

CN224387498UActive Publication Date: 2026-06-23QILU HOSPITAL(QINGDAO) CHEELOO COLLEGE OF MEDICINE SHANDONG UNIV
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Patent Information

Application Number
CN202520411062.5
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-11
Publication Date
2026-06-23
Estimated Expiration
2035-03-11

AI Technical Summary

Technical Problem

In existing technologies, the cholangioscope and irrigation tube need to be repeatedly adjusted during the stone retrieval process, resulting in long operation time, high risk of bile duct damage and bleeding, and incomplete irrigation, which increases the risk of infection and recurrence.

Method used

A basket stone retrieval device with bile duct irrigation function was designed, which integrates irrigation and stone retrieval functions. Through the combination of catheter, fixation ring, guide wire and irrigation tube, it can achieve one-time precise irrigation and stone retrieval, reducing the number of times instruments cross-enter the human body.

Benefits of technology

It significantly reduces surgical time and complexity, lowers the risk of bile duct injury and bleeding, ensures the cleanliness and patency of the bile duct, and prevents residual stones and inflammation.

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Abstract

The utility model provides a mesh basket calculus removing device with a biliary tract flushing function. The mesh basket calculus removing device comprises a catheter, a fixing ring, a guide wire, a flushing pipe and a pipeline guide wire. Wherein the conduit is provided with a first conduction cavity and a plurality of second conduction cavities; a first through hole is formed in the fixing ring; the guide wire penetrates through the second conduction cavity, and a net basket is formed at the front end of the guide wire; the flushing pipe is installed in the first communicating cavity and provided with a liquid conveying cavity. And the pipeline guide wire is arranged in the infusion cavity of the flushing pipe in a penetrating manner. During use, the front end of the catheter is conveyed to a calculus position through an endoscope; normal saline is injected into the flushing pipe to flush attachments around the calculus; then the flushing pipe is pulled out, then the guide wire is pushed to enable the mesh basket to be opened to sleeve the calculus, and the mesh basket is withdrawn along with the endoscope; after calculus removal, the flushing pipe is installed through the pipeline guide wire, and then the biliary tract is flushed again to remove residues. The device reduces operation time and complexity, avoids repeated cross entry of instruments into a human body, and reduces biliary tract injury and bleeding risks.
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