Balloon for removing stone from bile duct

Abstract

The invention relates to the technical field of medical instruments, in particular to a balloon for removing stone from a bile duct. The balloon for removing the stone from the bile duct comprises a catheter body, wherein an inflatable main balloon is arranged at one end of the catheter body, and an inflatable auxiliary balloon is arranged on one side of the main balloon. The auxiliary balloon is added to one side of the main balloon, and the main balloon can be bent at a certain angle after the auxiliary balloon is inflated with air, so that the balloon can more smoothly pass a corner of the bile duct or a part of blocked bile duct, the bent balloon can perform gentle curettage on part of stone tightly combined with the bile duct, and the balloon has better flexibility while compared with existing stone-removing balloons, and can more comprehensively and carefully perform searching and stone removal operation on the bile duct. Multiple testes by the inventor prove that bending of the balloon doesn't mean that the larger the bending angle is, the better the effect is; when the main balloon bends outwards to form the 60-degree radian, the balloon can more easily pass the bile duct and can be flexibly controlled according to the shape of the corner of the bile duct or part of the blocked bile duct, the stone can be removed completely, and friction to the wall of the bile duct can be reduced as far as possible.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a bile duct stone extraction balloon. Background technique [0002] At present, the balloon for biliary tract stone removal is to send the uninflated balloon into the biliary tract along the guide wire, so that the balloon part passes over the target bile duct with stones, and then inflates to form a round-shaped balloon to fill the bile duct, and then inserts the inflated balloon along the guide wire. The balloon pulls out the target bile duct. When the balloon exits the bile duct, the stones can be taken out together. Due to the limitation of the shape of the stone extraction balloon, when it exits the biliary tract, if it encounters a junction with a small intersection angle, the shape of the balloon is limited, and it is difficult to pass through and take out the stone completely. [0003] Restricted by the physiological structure of the bile duct, most of the stone...

AI Technical Summary

Problems solved by technology

[0004] The invention provides a balloon for bile duct stone removal, which solves the problem that the balloon catheter in the prior art cannot be bent to pass through the angled bile duct after inflation, and cannot meet the needs of part of the bile duct for stone removal.

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