Twin ring retractor for the postpartum cervix.
D002584:Cervix Uteri / Q000601:surgery*; D004420:Dystocia; D004864:Equipment and Supplies; D005260:Female; D006801:Humans; D009774:Obstetrics / Q000600:supply & distribution*; D049590:Postpartum Period; D011247:Pregnancy; D014427:Twins; D014599:Uterus
CERVIX UTERI/surgery; OBSTETRICS/equipment and supplies