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我们根据子宫腔的形状、大小以及生理、解剖、动力学等特点,研制出双侧栓形外表呈鱼鳞状,前端有小载药杯的IUD。自1982年以来经281例,428妇女年的临床观察结果,其初步避孕效果令人满意。因症取出率为0.7/100妇女年,妊娠率为1.2/100妇女年,未发现有自脱的现象。但有16例月经周期缩短,占5.7%,白带增乡的18例,占6.4%,月经量增多的23例,占8.2%,三个月后逐渐恢复正常。将放置经历了3、6、12、24月的四例栓形IUD取出后进行对硅橡胶的理、化性质测定,其结果表明仍保持原有的良好性能。
According to the shape, size and physiology, anatomy, kinetics and other characteristics of the uterine cavity, we developed the IUD with a scaly shape on both sides and a small drug-loaded cup on the front. Since 1982, 281 cases, 428 women’s clinical observation of the year, the initial contraceptive effect is satisfactory. Due to the removal rate of 0.7 / 100 women years, the pregnancy rate was 1.2 / 100 women, did not find any self-off phenomenon. However, 16 cases of menstrual cycle shortened, accounting for 5.7%, 18 cases of vaginal discharge by the township, accounting for 6.4%, 23 cases of menstrual increase, accounting for 8.2%, gradually returned to normal after three months. Will be placed after 3, 6, 12, 24 months of the four cases of plug IUD removed after the physical and chemical properties of silicone rubber, the results show that still maintain the original good performance.