我国从1957年开展使用宫内节育器,最初用塑料环,1959年全国推广应用金属环。1972年在上海交流全国各地应用节育环的经验,初步认为麻花环、混合环、节育花及金属环较好(图1)。对放置宫内节育器后,随访有否下移、脱落及异位,一般是用X线观查,60、70年代兼用超声探环,到70年代末期始用B超探测。 My country from 1957 to carry out the use of IUD, the first plastic ring, the national promotion of the use of metal ring in 1959. In 1972, Shanghai shared the experience of applying birth control rings across the country. It was initially believed that the cannabis rings, hybrid rings, birth control flowers and metal rings were better (Figure 1). On the placement of IUD, the follow-up whether down, off and ectopic, usually with X-ray examination, both 60 and 70 use of ultrasound probe, the beginning of the late 70s with B-probe.