宫颈环扎手术做了三次失败是何原因?What reason does cervix entrapment operation do 3 times fail?

陈凤林教授指出：宫颈环扎手术扎的是宫颈外口，怀孕后做更容易刺激流产，目前我们北京安太医院做的是宫颈埋箍，怀孕前就可以做，安全，有效，不流产，若怀孕后，孕早期经腹做，孕后期经阴道做，都不用开刀!

Professor Chenfenglin pointed out: The cervix cervix is pierced by the outer cervix, and it is easier to stimulate abortion after pregnancy. At present, what we do in Beijing Antai Hospital is a cervix collar, which can be done before pregnancy. It is safe, effective, and not aborted. If pregnant, Early pregnancy through the abdomen to do, pregnancy later through the vagina do not need to operate!