Antaihuan can keep to the full term, but encircling can't, why? Because the traditional encircling, is to use the surgical silk thread to tie the loose cervix tightly, but the biggest disadvantage is that the bearing capacity is not good, with the increase of gestational age, the encircling silk thread is easy to break, or the cervix itself tears, and finally miscarriage.
Our antaihuan is a biological hoop, just like a ring on the hand, which is directly put on the inner mouth of the cervix. It has a very good bearing capacity, even if the baby is tall and fat, it can bear that weight. And we don't need to stay in bed for a long time to protect the fetus, while the traditional encirclement needs to stay in bed