| 摘要 |
A film-type ureter stone blockage extractor, which is provided with a hollow operating rod (1) that is opened at the proximal end and closed at the distal end. A blocking film (5) is provided on a distal section (12) of the operating rod (1). When in use, viewing from one end of the operating rod (1) to the other end thereof, the blocking film (5) constitutes a round blocking object. The distance from a free side (52) of the blocking film (5) to the distal end of the operating rod (1) is less than the distance from a fixed side (51) of the blocking film (5) to the proximal end (11) of the operating rod (1). A through hole (7) is also provided on the wall of the operating rod (1). A water flow flowing from a cavity of the operating rod (1) via the through hole (7) exerts a force on the inner wall of the blocking object (5). 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 cases of 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. |
