Custom valved cervical cap
AssigneeUniversity Patents, Inc.
InventorsRobert A. Goepp, Uwe E. Freese
Life of this patent
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Abstract
A non-invasive birth control device in the form of a custom-formed, valved cervical cap is disclosed. The cervical cap comprises a cup-shaped elastomeric shell substantially complementary with contiguous surface of portio vaginalis cervicis when in contact therewith and having an aperture at the apex of the shell. The aperture is covered by an elastomeric web secured to the shell and defines, together with the shell, a one-way valve means having a discharge port offset from the aperture. The cervical cap can be fabricated from a specially designed blank of a thermoplastic elastomeric material using a replica of cervix uteri as a mold.
Claims21
A non-invasive birth control device which comprises
- a cup-shaped elastomeric shell having a convex outer surface and a concave inner surface that is substantially complementary with a contiguous surface of portio vaginalis cervicis in its actual configuration when in contact therewith, said shell defining an aperature at the apex thereof and having a depth sufficient to receive a major portion of said portio, but the periphery of said shell terminating short of fornices vaginae;
- and
- an elastomeric web over said aperture and secured to said outer surface about said aperture defining a passageway communicating with said aperture and providing a discharge port along said convex outer surface and offset from said aperture;
- said web conforming to and coacting with a contiguous portion of said convex outer surface to provide a one-way valve means for uterine discharge entering said aperture from within said shell.
Dependencies are inferred from the claim text.