这种新的阴道避孕法,使用方便而无激素避孕法危害生理的作用,能抑制精子活动和阻止精子进入颈管内。该避孕剂呈卵圆形,长2.8厘米、宽1.4厘米,容易置入阴道内,而不需使用特殊放置器。通过形成泡沫,布满宫口,释放高效的杀精子剂而起避孕作用。杀精子剂,Nonoxynol9(壬苯氧基聚乙氧基乙醇)接触时破坏精子,很可能是引起外层脂蛋白和其他成分从精子结构中分离所致。起泡剂具有高度弥漫性和粘性,性交时扩散到宫颈,堵塞宫口,作用维持2小时。本文报道23例已婚夫妇,年龄20～30岁,3例已生育过。男方经检查精子浓度、存活率和活动 This new vaginal method of contraception, easy to use and without hormonal contraception, endanger the physiological role of sperm can inhibit activity and prevent sperm into the neck. The contraceptive oval, 2.8 cm long, 1.4 cm wide, easy to place into the vagina, without the use of special placer. Through the formation of foam, full of the cervix, the release of efficient spermicide and contraception. Spermicide, Nonoxynol 9 (nonylphenoxypolyethoxyethanol) destroys the spermatozoa at the time of contact, most likely causing the separation of the outer lipoproteins and other components from the sperm structure. Foaming agent has a high degree of diffuse and sticky, intercourse spread to the cervix, blocking the cervix, the role of maintaining 2 hours. This article reports 23 married couples, aged 20 to 30 years, 3 have been childbirth. Man checked by sperm concentration, survival rate and activity