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.
Claims15
An impression tray suitable for making an impression of a cervix uteri which comprises
- a hollow cup for receiving the cervix and having a flexible well terminating in a peripheral, outwardly flared anterior lip and a bottom aperture;
- a posterior sleeve integral with said cup and surrounding said bottom aperture;
- and
- a hollow elongated stem having a proximal end thereof received within said posterior sleeve and defining a passageway communicating with the interior of said cup.
An implement for making an impression of a cervix uteri which comprises, in combination, an impression tray and a syringe having an elongated nozzle received within said tray,
- said tray comprising a hollow cup for receiving the cervix and having a flexible wall terminating in a peripheral, outwardly flared anterior lip and a bottom aperture;
- a posterior sleeve integral with said cup and surrounding said bottom aperture;
- and a hollow elongated stem having a proximal end thereof received within said posterior sleeve and defining a passageway communicating with the interior of said cup;
- and
- said syringe comprising a hollow body portion, a movable plunger within said body portion, and an elongated nozzle communicating with said body portion and adapted to be received within said passageway of the hollow elongated stem.
Dependencies are inferred from the claim text.