镍钛记忆合金支架管治疗尿道下裂术后尿道狭窄18例

Ni-Ti shape memory alloy stent in treating postoperative urethral stricture of hypospadia

目的:探讨镍钛记忆合金支架管治疗尿道下裂术后尿道狭窄手术方法及临床效果。方法:对18例I期尿道成形术后尿道狭窄患者采用氯胺酮麻醉加骶麻,以尿道扩张器对狭窄段尿道进行扩张后,放置记忆金属支架管。如扩张尿道时损伤尿道或出现夹道,则尿道切开直视下放置金属支架管。合金支架管在术后3个月取出。结果:本组治愈17例,治愈率83%(17/18).3个月内金属支架管脱落1例,再次出现尿道狭窄。结论:镍钛记忆金属支架管治疗尿道下裂术后尿道狭窄,是简便易行,安全性高,创伤小,疗效肯定的治疗方法。

Objective： To probe into the operative methods and clinical effect of Ni-Ti shape memory alloy stent in treating postoperative urethral stricture of hypospadia. Methods： 18 patients with urethral stricture after urethroplasty were enrolled in the study. By means of ketamine anesthesia and sacral canal anesthesia, the urethra at the narrow site was dilated with urethreurynter, and then the memory alloy stent was placed. If urethra was injured or urinary clipping occurred during the dilatation of urethra, the memory alloy stent was placed directly under incison of urethra. The alloy stent was taken out at 3 months postoperatively. Results： 17 cases were cured, and the curative rate was 83%（17/18）. The alloy stent shed in l case, and urethral stricture occurred again, Conclusion： Ni-Ti shape memory alloy stent is convenient and feasible in treating postoperative urethral stricture of hypospadia, and it has higher safety, small wound and definite curative effect.