IRREGULARLY-SHAPED BALLOON-TYPE URETERAL STONE BLOCKAGE EXTRACTOR

摘要

An irregularly-shaped balloon-type ureteral stone blockage extractor, which is provided with a hollow operating rod (1) that is opened at the proximal end and closed at the distal and. A fitting groove (4) is provided at a distal section of the operating rod (1). An annular balloon (5) is provided on the fitting groove (4). A blocking film (6) is provided on the periphery of the balloon (5). The blocking film (6) surrounds the periphery of the balloon by at least one circle. The interior of the balloon is in communication with a cavity of the operating rod. The ureteral stone blockage extractor is of a compact size, can be easily inserted into a ureter, does not push a stone in reverse towards a kidney and thus causing damages to the ureter wall, can completely block the ureter, effectively prevents any stone and stone fragments from being flushed back into the kidney by an injected water flow, is not prone to stone impaction, does not deform easily or rub against the ureter wall during a stone extraction process, and can remove all stones in a single run, thus achieving the goal of efficient stone removal.