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4子宫内上环使用原理“环”学名为宫内节育器,将其放置于育龄妇女的宫腔内,通过机械性刺激及化学物质的干扰而达到避孕的目的,有不同材质及形状。优点一个环可以使用多年,方便实用又不影响性快感,是我国育龄期妇女最常用的长效避
4 Uterine ring on the use of principles “ring ” scientific name for the IUD, placed in the uterine cavity of women of childbearing age, through the mechanical stimulation and chemical interference to achieve the purpose of contraception, there are different materials and shape. Advantages A ring can be used for many years, convenient and practical and does not affect the pleasure, is the most common long-term women of childbearing age in our country