Bioerodible diaphragm

Details Bioerodible diaphragm Bioerodible diaphragm

1980-11-20

1983-05-03

Lieberman, Allan

Surgery

Truss

Pad

424 19, 604 55, 604890, A61F 546

Patent

active

043817726

ABSTRACT:
An improved contraceptive diaphragm is provided which has a bioerodible matrix that disintegrates in the vaginal fluids within a predetermined period of time. The matrix is made from a water soluble gel, more particularly from a water soluble polymeric resin gel, and preferably from a polyvinyl alcohol resin gel. The solubility of the water soluble gel in the vaginal fluids is controllably reduced for example, by heat treatment of the gel after formation of the diaphragm. The diaphragm does not have to be removed in a single piece, but is excreted as a slight vaginal discharge. In one aspect of the invention, a natural collagenous protein is embedded in the matrix to assure sealing adherence of the diaphragm when positioned in the vagina. In another aspect of the invention a hydrophilic material is provided at the center of the matrix to effectively absorb secreted cervical mucus thereby creating a dry passageway which will impede entrance of the sperm.

REFERENCES:
patent: 3143472 (1964-08-01), Lappas
patent: 3443563 (1969-05-01), Ishihama
patent: 3763861 (1973-10-01), Forti
patent: 3811444 (1974-05-01), Heller
patent: 3888975 (1975-06-01), Ramwell
patent: 3914402 (1975-10-01), Shell
patent: 3971367 (1976-07-01), Zaffaroni
patent: 3986510 (1976-10-01), Higrichi
patent: 4180064 (1979-12-01), Heller
Skeist, "Handbook of Adhesives" p. 369, 1964.

Affiliated with

Also associated with

Rating

Bioerodible diaphragm does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Bioerodible diaphragm, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bioerodible diaphragm will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1206355