宫颈松是什么原因导致的?宫颈松弛病因较多见的是先天子宫峡部发育不良，子宫畸形并发症之一;少部分是后天产伤的宫颈撕裂后遗症。

　　What reason is cervix loose to cause? The causes of cervical relaxation are more common in congenital dysplasia of the isthmus and one of complications of uterine malformation; A small part of it is the sequelae of the cervical tear from the acquired injury.

　　陈凤林教授发明宫颈埋箍术，生物箍也叫安太环，是把安太环埋在宫颈内口，像戒指一样直接套在宫颈内口的位置，生物箍的承重力是非常好的，胎儿不再会流产。

　　Professor Chenfenglin invented cervical banding, and the biological hoop was also called Antai Ring. It buried Antai Ring in the inner cervix, and it was directly tied to the inner cervix like a ring. The weight of the biological hoop was very good. The fetus will no longer miscarry.