ZRO Operculum U.S. Patents

4,606,3361986 Method and apparatus for non-surgically sterilizing female reproductive organs
6,286,5102001 Apparatus and method for preventing fluid transfer between an oviduct and a uterine cavity
6,371,118 2002 Birth control apparatus
7,258,1212007 Apparatus and method for preventing fluid transfer between an oviduct and a uterine cavity
This device is not FDA approved. Not for sale in the U.S.