Foley 氏导尿管在临床上应用时日已久,但存在着一些缺点:(1)气囊太小,壁太薄,最大只有30ml 的容积,对于较大的前列腺窝就不能有效地压迫,亦不能很好地将前列腺窝与膀胱隔开,如果注液或注气太多,超过30ml,可造成气囊破裂;(2)用橡胶制成,对于尿道粘膜的物理性刺激很大,尿道内的分泌物增多,易于发生感染,这对于后尿道断裂损伤行 Foley’s catheters have been used clinically for a long time, but have some shortcomings. (1) The balloon is too small and the wall is too thin. The maximum volume is only 30ml, which can not be effectively compressed by the large prostrate fossa. Can not well separate the prostate fossa and bladder, if injection or insufflation too much, more than 30ml, can cause airbag rupture; (2) made of rubber, physical stimulation of the urethral mucosa, urethral Increased secretions, prone to infection, which damage the line after urethral rupture