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宫内节育器在我国综合节育措施中是应用范围最广、数量最多的一种方法。国内外广大计划生育工作者和科技人员为了提高它的避孕效果,降低副作用,曾多方面在其形态及材料上做了大量研究工作。如近年来采用了硅橡胶代替塑料,因其具有高分子惰性性
IUD in our comprehensive birth control measures is the most widely used, the largest number of a method. The majority of family planning workers and scientists at home and abroad have done a great deal of research on their forms and materials in order to enhance their contraceptive effects and reduce their side effects. In recent years, the use of silicone rubber instead of plastic, because of its polymer inertness