自1959年石浜和Oppenheimer各自报道以来,作为避孕方法的宫内节育器的价值,在世界上又有了新的估价。1962年在纽约召开的第一次国际会议以后,宫内节育器进入了新时代。现已有十余年。在此期间,有关宫内节育器的实验和临床的研究极多,不少新型宫内节育器被研制出来,并对其临床效果及副作用做了详细的研究,对它的作用机理也从各方面作了探讨。基于这些研究的结果,近几年研制了几 Since Ishibak and Oppenheimer reported each in 1959, the value of IUD as a method of contraception has gained new valuations in the world. After the first international conference in New York in 1962, the IUD entered a new era. Now more than ten years. During this period, IUD experiments and clinical studies are numerous, many new IUDs were developed, and its clinical effects and side effects made a detailed study of its mechanism of action from Aspects have been discussed. Based on the results of these studies, several have been developed in recent years