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节育器放在子宫腔是一个异物,它妨碍受精卵在子宫内膜上着床,使受精卵不能发育成胎儿,从而达到避孕目的。这是一种暂时节育方法,而不是永久不育。节育器取出后受精卵就能在子宫内膜上着床、发育和成长,不会影响怀孕,大量事实说明,许多妇女取环后往往很快就怀孕了。曾有人做过统计,73%的妇女在取环后半
IUD is placed on the uterine cavity is a foreign body, which hindered the fertilized egg implantation on the endometrium, so that fertilized eggs can not develop into a fetus, so as to achieve the purpose of contraception. This is a temporary method of birth control, rather than permanent infertility. After the fertilization device is removed, the fertilized egg can implant, develop and grow on the endometrium, and will not affect the pregnancy. A large number of facts show that many women often get pregnant soon after taking the ring. Someone has done statistics, 73% of women in the latter half of the ring