Contraceptive sponge - diaphragm bilayer

Details Contraceptive sponge - diaphragm bilayer Contraceptive sponge - diaphragm bilayer

1980-11-05

1983-01-25

Rosenbaum, C. Fred

Surgery

Truss

Pad

128270, A61F 546

Patent

active

043697739

ABSTRACT:
An intravaginal insert, serving as a mechanical and chemical contraceptive barrier is described. The insert consists of a thin circular disc bilayer of a resilient and fluid absorbent sponge, preferably made of collagen, laminated on the inside with a soft membrane. Both layers of laminated sponge are connected at the circumference to form a pocket with a small opening. A spermicide, preferably a detergent, is deposited within the matrix of the sponge, which is also buffered to pH 4 to 5. Into a pocket made from this composite material a silastic ring is inserted before wetting the sponge with tap water and inserting it into the upper vault of the vagina to cover the cervix in a similar manner to the standard diaphragm.

REFERENCES:
patent: 2020107 (1935-11-01), Cruickshank
patent: 2309868 (1943-02-01), Robertson
patent: 2580133 (1951-12-01), Sheen

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