Biliary stone retrieval balloon catheter

Intended purpose

A flexible, tubular, manual endotherapy device with an inflatable multi-sizing balloon at the distal end designed for the removal of stones (calculi). It is inserted through the working channel of an endoscope, typically beyond the stones where the balloon is inflated and retracted, the balloon pushing the trapped stones out. It typically has more than one lumen to allow,.e.g., use of a guidewire while simultaneously enabling the injection of a contrast medium.