Custom valved cervical cap with deformable margin

Details Custom valved cervical cap with deformable margin Custom valved cervical cap with deformable margin

1980-06-26

1983-01-18

Robinson, Ellis P.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including aperture

128127, 128131, 128132R, 128138R, 428156, 428157, 428167, 428172, 428192, 428194, 428195, 428203, 428213, 428215, 428515, 428516, 428517, 428521, 428139, B32B 310, A61F 546

Patent

active

043692192

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, having an aperture at the apex of the shell, and a depending skirt that is thinner than said shell and is provided with a plurality of spaced slits. 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.

REFERENCES:
patent: 2836177 (1958-05-01), Sells
patent: 2851032 (1958-09-01), Friedman
patent: 3952737 (1976-04-01), Lipfert
patent: 4007249 (1977-02-01), Erb
patent: 4322463 (1982-03-01), Goepp

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