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作者研究阴道避孕器,希望孕酮、炔诺酮或d-18甲基炔诺酮几种孕激素类避孕器能小剂量释放达到避孕而不影响月经周期。小剂量孕激素类避孕作用机理尚不能完全阐明,但不管哪一种都能改变宫颈粘液,阻碍精子通过,并不抑制排卵或影响下丘脑-垂体-卵巢轴,而影响着床,获能及精子活性。本文研究目的:(1)阴道避孕器内d-18甲基炔诺酮与炔诺酮的量较过去报导的更少,但不影响排卵而能可靠的避孕;(2)要求阴道避孕器释
The author of the study of vaginal contraception, hope progesterone, norethisterone or d-18 norethisterone progesterone contraceptives can release small doses to achieve contraception without affecting the menstrual cycle. Low-dose progestin contraceptive mechanism can not be fully elucidated, but no matter what kind of cervical mucus can be changed to impede the passage of sperm, does not inhibit ovulation or affect the hypothalamus - pituitary - ovarian axis, and affect the implantation, Sperm activity. The purpose of this study: (1) The amount of d-18 norethindrone and norethindrone in the vaginal device was less than in the past, but did not affect ovulation and reliable contraception; (2)