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宫内节育器（IUD）是我国育龄妇女的主要避孕器具，采用IUD避孕者约占我国育龄妇女的40％。因此，研制，筛选出更为安全、高效、可接受性强的IUD就非常重要。“七五”期间我们作为全国IUD多中心研究协作组之一，对四种新型国产IUD，即：含铜宫腔形宫内节育器（宫铜器，UCDcu200），宫腔形宫内节育器（宫形器，UCD），Tcu200，磁硅器以及国内外应用多年的Tcu220c进行了两年临床及有关基础的比较性研究。评价其避孕效果及可接受性，以便筛选出较好地适应我国妇女应用的新型IUD。现将研究情况报告如下：
IUD is the main contraceptive device for women of childbearing age in our country. About 40% of women of childbearing age in China use IUD contraception. Therefore, it is very important to develop and screen a more secure, efficient and acceptable IUD. During the “Seventh Five-year Plan” period, as one of the collaborative IUD multicentre research groups in China, we conducted a survey of four new domestic IUDs, namely copper-containing intrauterine IUD (uterine copper device, UCDcu200), intrauterine IUD (U-shaped device, UCD), Tcu200, magnetic silicon and many years of domestic and international application of Tcu220c for two years of clinical and related comparative studies. Evaluation of its contraceptive effectiveness and acceptability in order to screen out a new type of IUD better adapted to the application of women in our country. The research report is as follows: