Surgery – Female reproductory tract shields – supports – or birth... – With contraceptive – spermacidal – or antifertility agent
Patent
1988-08-05
1990-09-18
Pellegrino, Stephen C.
Surgery
Female reproductory tract shields, supports, or birth...
With contraceptive, spermacidal, or antifertility agent
128833, 6048901, A61K 922
Patent
active
049571192
ABSTRACT:
The invention relates to an implant of polymeric material which can release a contraceptive agent for a relatively long time when fitted subcutaneously or locally. The implant comprises a core material of ethylene/vinyl acetate copolymer which functions as a matrix for a contraceptive substance, an ethylene/vinyl acetate membrane encasing the core material, and a contact layer at the interface of the core material and membrane which prevents the separation of the core material from the membrane. The implant of the invention is made by a co-extrusion process.
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Chemical Contraception, Bennett, John P., Columbia University Press, N.Y., 1974, pp. 56-58.
Akzo N.V.
Blackstone William M.
Pellegrino Stephen C.
Rafa Michael
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