宫颈松弛/宫颈机能不全分类有哪些？How many types are there for Cervical relaxation/ cervical insufficiency? 

1、先天性宫颈功能不全/宫颈松弛：大约1/3的宫颈机能不全患者是先天因素所致，常伴有苗勒氏管发育异常，如单角子宫或纵隔子宫，也可能是宫颈组织学缺陷，宫颈弹力蛋白含量不足。

1.Congenital cervical relaxation/ cervical insufficiency: about 1/3 of patients with cervical insufficiency are caused by congenital factors, often accompanied with dysplasia of the Mullerian ducts, such as unicornate uterus or uterus mediastinum, may also be a cervical histological defect and cervical inefficiency elastin content. 

2、后天性宫颈功能不全/宫颈松弛：常发生于产科或妇科手术损伤后，如人流时粗暴的宫口扩张术、宫颈锥形切除术及分娩时宫颈裂伤未及时缝合时;也可继发于宫颈或子宫下段的解剖结构改变后，如发生肌瘤。

2.Acquired  cervical relaxation/ cervical insufficiency: acquired cervical relaxation normally occurs after obstetrics and gynecologic surgery, such as uncaring induced abortion, cervical dilation, cervicoconectomy (conization of the cervix) and untimely suture of cervical laceration during delivery; it may also secondarily occurs in the lower part of the uterus or cervix after the change of anatomical structure, such as fibroids. 

3、生理性宫颈功能不全/宫颈松弛：有学者认为宫颈内口在妊娠期起功能性括约肌作用，亚临床的子宫收缩或低张性宫颈内口的患者其宫颈内口括约肌作用减弱。

3.Physiologic cervical relaxation/ cervical insufficiency: some scholars believe that the cervix plays a role of functional sphincter during pregnancy, the cervical sphincter will reduce if the patient has subclinical uterine contraction or hypotonic cervix. 

宫颈松，宫颈短北京安太医院进行宫颈埋箍，生物箍也叫安太环，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，胎儿不会再流产，孕前就可以干预治疗，可以签约！

Beijng Antai Hospital carries out contracted treatment for cervical embedding under hysteroscopy to treat cervical relaxation and short cervix, we call the biological coil as Antai Coil, the surgery is to place an Antai Coil into the cervix to prevent late miscarriage, it is like placing a ring directly to the cervix, and it is better to undergo the surgery before pregnancy.