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100多年前有人发现一部分患子宫肌瘤的病人不易妊娠,认为这是由于肌瘤的结节在子宫腔成为异物影响孕卵着床的缘故。又有人把软骨移植在家兔的子宫壁上,同样也造成不育。1928年,德国学者格莱芬培(Graefenberg)氏用银丝环放入子宫腔内作为人体避孕试验成功后,才引起多数学者的注意。这种环后来被称为格莱芬培氏环。以后日本学者太田氏将环加以改进,使成小环,且在其中心加一圆形金属片,称为太田氏环。后因发现金属副作用多,一度被禁用。近来改用塑料制环,使用
100 years ago, some people found that patients with uterine fibroids are not easy to pregnancy, that this is due to fibroids nodules in the uterine cavity as a foreign body affect the pregnancy egg implantation reason. Cartilage was also transplanted in the rabbit’s uterine wall, also caused by infertility. In 1928, the German scholar Graefenberg’s silver wire ring into the uterine cavity as a human contraceptive test was successful, attracted the attention of most scholars. This ring is later called the Greifenberg ring. After the Japanese scholar Ota’s ring will be improved to make a small ring, and at its center plus a round metal sheet, known as the Ota ring. After the metal side effects found, was banned. Recently changed to plastic ring, use