缝外膜肠线支架减张输精管吻合术动物实验研究

AN INIMAL EXPERIMENT OF A NEW TECHNIGUE OF MACROSCOPIC VASOVASOSTOMY WITH CATGUT TO SPLINT AND REDUCE TENSION AND SUTURING TUNIC OF THE BOTH ENDS OF THE VAS

本文报告经动物实验研究的一种在肉眼下仅缝合输精管外膜及用肠线作支架并减张的输精管吻合新方法(即Ⅰ法),与外膜肌层法(即Ⅱ法),全层不锈钢支架法(即Ⅲ法)及单纯全层法(即Ⅳ法)等对照进行研究.每法15只狗,四法共60只狗的动物实验结果显示:其输精管吻合口的通畅率,Ⅰ、Ⅱ、Ⅲ和Ⅳ法分别是63.3%、66.7%、23.3%和10%.本法和其他肉眼下的输精管吻合术比较,具有吻合口组织损伤轻,方法简便易行,效果满意的特点,是一种可供选择的较好的肉眼下的输精管吻合新方法.

A new technigue of the macroscopic vasovasostomy has been reported. The procedure was carried out by suturing only tunic of the both ends of the vas with catgut to splint and reduce tension(Group 1 ).In animal experiment, this technigue was compared with following methods of vasovasostomy. ( 1 ) .tunic-muscular layer anastomosis without splint(Group 2),(2).whole layer anastomosis with stainless steel splint (Group 3) and (3).whole layer anastomosis without splint. Among all dogs,the operative procedure was performed without the aid of optical magnification nor any special instruments. The four technigues were tested in 60 dogs (120 vasa) in which each of them used 15 dogs (30 vasa). The results of the dog experiments showed that the anatomical patency rates of the Group 1,2,3 and 4 after operation were 63.3%, 66.7%, 23.3%and 10%.Our studies indicate that the use of absorble catgut as an intravasal splinting and reducing tension in vasovasostomy is feasible in dogs.Gross as well as microscopic evaluation of the anastomotic area demonstrated that the intraluminal material was substantially absorbed with nosignificant reaction after operation.As compared with other macroscopic vasovasostomies, this technic is claimed to be simpler, easier, less traumatic, effective and feasible