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Details for Patent: 4,957,119

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Summary for Patent: 4,957,119

Title: Contraceptive implant
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.
Inventor(s): de Nijs; Hendrik (Oss, NL)
Assignee: Akzo N.V. (Arnhem, NL)
Application Number:07/229,066
Patent Claim Types:
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Device; Use;

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Foreign Priority and PCT Information for Patent: 4,957,119

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
Netherlands8701868Aug 08, 1987

International Patent Family for Patent: 4,957,119

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
China1024753<disabled in preview>
Finland883594<disabled in preview>
Denmark173166<disabled in preview>
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The estimated expiration dates shown above are derived by simply adding 20 years to the priority date.
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