临床上常因各种原因而行膀胱造瘘术 ,而膀胱造瘘术常选用型号适宜的蕈状导尿管 ,蕈状导管头端膨大呈蘑菇状 ,不易从造瘘口脱出 ,且开口大 ,易于引流为其优点。但其头端膨大 ,更换导尿管时常规方法难以通过造瘘口 ,即使插入膀胱 ,在退血管钳时又容易将导尿管带出 ,每次更换导尿? Clinically often due to various reasons, bladder ostomy, and bladder fistula often choose appropriate type of mushroom-shaped catheter, mushroom-shaped catheter tip swollen mushroom was not easy to emerge from the stoma, and the opening large , Easy to drain for its advantages. However, its head swollen, the conventional method of catheter replacement difficult to pass through the stoma, even inserted into the bladder, when the retraction vasculature and catheter easily out, each change catheterization?