根据近年来国内外资料的报导,中期引产方法繁多,尤其是羊膜腔内注入法广泛应用,如天花粉,芫花乙醇浸出液,酒精羊水交换,穿心莲,尿素,甘遂,前列腺素等等。随着中期引产的广泛开展,其并发症也相应的增多,如子宫颈裂伤、子宫后穹窿穿出、子宫呈水桶梁样半横断、子宫破裂、子宫颈阴道瘘、子宫腹腔瘘等等,为避免并发 According to reports from domestic and foreign sources in recent years, there are many methods for induction of labor in the medium term. In particular, amniotic fluid injection is widely used, such as TCS, Daphne genkwa ethanol extract, alcohol amniotic fluid exchange, andrographolide, urea, kansui, prostaglandin and so on. With the widespread introduction of mid-term labor, the corresponding increase in its complications, such as cervical laceration, posterior fornix piercing the uterus was bucket beam-like semi-transection, uterine rupture, cervix vaginal fistula, uterine celiac fistula and so on, To avoid concurrency