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Unisex contraception

作者:胡母禄企    发布时间:2019-03-08 04:15:11    

By Barry Fox A reversible sterilisation process for men and women has been patented by Jeffrey Callister, William Tremulis and Denise Harges of the US (WO 98/26737). It consists of a small plug of inert plastics, whose outer surface is coated with a growth-promoting enzyme. The plug is deformed by stretching it until it is slightly wider than its natural shape. The deformed plug is inserted using a catheter into a man’s vas deferens or a women’s Fallopian tube and left there for around a week, until tissue grows into the surface and binds with it. The plug is then heated by a warm fluid, which makes it revert to its natural shape,

 

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