人工流产术是避孕失败的补救措施。目前临床上普遍采用的方法是负压吸引术,为妊娠10周内终止妊娠的一种方法〔1〕,该方法具有快捷、成功率高、出血时间短、出血量少的特点,但负压吸引术对妊娠妇女所造成的痛苦是显而易见的,尤其是对未育和有剖宫产术史而未经阴道产者,不仅扩宫? Abortion is a remedy for contraceptive failure. At present, the commonly used method in clinic is negative pressure suction, which is a method of termination of pregnancy within 10 weeks of gestation [1]. The method has the characteristics of quickness, high success rate, short bleeding time and less bleeding, Suction of pregnant women caused by the pain is obvious, especially for non-sterile and have a history of cesarean section without vaginal birth, not only to expand the palace?