| 摘要 |
The invention relates to an intrauterine contraceptive pessary consisting of a stem, two first arms that protrude out from one end of the stem in two directions, a wire winding on the stem and wire windings on the first arms. According to the invention, this pessary is designed with the wire windings made of different metals so as to create an electrolyte system between the wire windings of the arms (2) and those of the stem (3), thus achieving very good contraception. |
