| 摘要 |
The present invention relates to an intravaginal contraceptive device such as a diaphragm or pessary. The contraceptive device of the invention comprises a central, flexible cap-like body portion engaged by the inside of a rigid inner ring with almost fixed diameter, and by an outer part lying in the plane of and around the inner ring and being connected thereto, the outer diameter of said outer part having the ability of increasing under influence of the local circumstances after being inserted into the vagina. Preferably the outer part consists of an outer ring of a material having the ability of expanding, thus increasing the diameter of the outer ring, and an elastic membrane continuously connecting the outer ring with the inner ring. The cap-like body portion, may be impregnated with a retarded release medicine such as a spermicide.
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