Contraceptive cervical cap

Details Contraceptive cervical cap Contraceptive cervical cap

1989-04-12

1990-10-09

Hafer, Robert A.

Surgery

Female reproductory tract shields, supports, or birth...

Pessaries

128834, 128841, A61F 546

Patent

active

049614363

ABSTRACT:
A cervical cap for covering a portion of the cervix uteri in order to prevent migration of sperm from the vagina into the cervical canal to thereby prevent conception. The cervical cap has an open end portion, a dome-shaped portion, preferably sealed, disposed opposite the open end portion, and a ridged section designed to grip the cervix to secure the cap. In the preferred embodiments, the ridged section has a plurality of substantially parallel ring-shaped ridges formed on the interior surface of the cap. In an alternate embodiment, a helical-shaped ridge is formed on the interior surface of the cap and extends from the rim to the dome portion, progressively narrowing in width.

REFERENCES:
patent: 92417 (1869-07-01), Angell
patent: 1103114 (1914-07-01), Warren
patent: 2818856 (1958-01-01), Kohl
patent: 2836177 (1958-05-01), Sells
patent: 3036570 (1962-05-01), Milgrom et al.
patent: 3404682 (1968-10-01), Waldron
patent: 3952737 (1976-04-01), Lipfert et al.
patent: 4007249 (1977-02-01), Erb
patent: 4320751 (1982-03-01), Loeb
patent: 4322463 (1982-03-01), Goepp et al.
patent: 4363318 (1982-12-01), Goepp et al.

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