[Cervix reconstruction after amniotic fluid puncture in amniotic sac prolapse in the second trimester].

The possibility and the problems of an surgical technique because of cervical insufficiency in the 2. trimester with a hourglass amniotic prolapse is shown in three cases. A new concept including amniocentesis and doubleclerclage is developed with a wide physiological reconstruction of the cervix and its occlusion mechanism at the inner and outer cervix. We show an alternative to previous surgical techniques that makes a prolongation of the pregnancy possible and causes additionally because of the minimal surgical procedure no disadvantage for the cervical function in coming pregnancies. Small surgical strain, quick surgical procedure and simultaneously continue of diagnostic possibilities as well as the reconstructive technique with small trauma of the cervical tissue are the advantages of this method.