家兔输精管激光凝堵术可复性研究

目的:了解家兔输精管激光凝堵术(光凝术)的效果及可复性。方法:应用Nd:YAG激光器,经套管针穿刺家兔输精管,导入激光光纤照射凝堵试验,确定了有效激光凝堵阈值,对光凝术后60只家兔的凝堵效果进行了一年的动态观察,并对输精管凝堵段结节作了穿刺再通试验。结果:家兔精子消失率100％,穿刺再通率72.7％。结论:高功率激光亦可用于光凝术,达到光凝效果的阈损伤值为40W/1s,输精管病理阈损伤为中环肌层。本文提示光凝术较传统结扎术简单、创伤小、并发症少、可复性强。

REDUCIBLE PHOTOCOAGULATION OF VAS DEFERENS OF RABBITS

Objective: To investigate the effect and reducibility of the occlusion of vas deferens of rabbits by laser photocoagulation. Method: With Nd: YAG laser instrument, the laser fiber was conducted into vas deferens of 60 rabbits via puncture- needle, the irradiation and occlusion were performed at the same time. The threshold of lesion was determined. They had been observed for a year after the photocoagulation. Then restoration of vas occlusal section was done with needle puncture. Results: All sperm of these rabbits disappeared in their semens, restorative rate was 72. 7%. Conclusion: High power laser can also be used in photocoagulation, the effective threshold is 40 w/sec and the pathological lesion is limited above middle muscle of vas wall. It is suggested that the laser photocagula-tion of vas deferens is simple, less injury, fewer complications and better reducibility than the traditional androligation.