安太环是创新技术，创新点在哪里?An Tai Wan is an innovative technology. Where is the innovation point?

　　创新点和学术价值：在孕前手术避免了缝扎导致流产的可能性，也不会导致宫颈感染。将“安太环”埋在宫颈内口的肌肉内，有效阻止宫颈内口的扩张。

　　Innovation and academic value: preconception surgery avoids the possibility of suture leading to abortion and does not lead to cervical infection. Bury "Antai Ring" in the muscles of the cervix, effectively preventing the expansion of the cervix.