在子宫腔内放置宫内节育环(简称“放环”),是我国使用最广泛的避孕方法,具有简便、安全、有效、不影响性生活、一次放环可避孕多年、若需生育将环取出即可怀孕等优点,因而很受已婚育龄妇女青睐。已婚育龄妇女由于个体差异和所 Intrauterine intrauterine device placed in the uterine cavity (referred to as “ring”), is China’s most widely used method of contraception, with simple, safe and effective, does not affect sexual life, a ring can be contracted for many years, if fertility Remove the ring can be pregnant and other advantages, which is very popular with women of childbearing age. Married women of childbearing age due to individual differences and