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最近(1975年4月)在英国剑桥举行的第5届国际计划生育联合会生物学专题讨论会上,Eckstein讨论了有关宫内避孕器的作用方式的各种假设,并提出,在恒河猴以及可能也在妇女,宫内避孕器是在子宫本身起到其主要的避孕作用的。也就是说,宫内避孕器对于排卵、黄体机能、精子运行和受精或早期卵裂都没有作用,或仅稍有抑制作用。从宫内避孕器的避孕效果建立极快,在除去宫内装置后又同样迅速地消失
Recently at the 5th International Federation of Family Planning Federation’s Biology Symposium in Cambridge, England, April 1975, Eckstein discussed various hypotheses regarding the mode of action of intrauterine devices and proposed that in rhesus monkeys And possibly also in women, intrauterine devices have their primary contraceptive function in the uterus itself. That is, intrauterine devices have no effect on ovulation, luteal function, spermatogenesis and fertilization or early cleavage, or only a modest inhibitory effect. Contraceptive contraception from the intrauterine device to establish very fast, in the same way as soon after the removal of intrauterine devices disappear