Nomegestrol derivatives-based subcutaneous implants

A - Human Necessities – 61 – K

Patent

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Details

A61K 31/57 (2006.01) A61M 31/00 (2006.01)

Patent

CA 2122827

The present invention relates to the field of therapeutical chemistry and more particularly to pharmacotechny. Specially, the present invention relates to new compositions adapted to local administration and more precisely to forms intended to be placed in the subcutaneous tissues and commonly called implants. Said implants are of various natures (hydrophobic, hydrophilic, biodegradable) and of various types (reservoir, matrix). Said implants incorporate an efficient dose of a derivative of 3,20-dioxo 6-methyl 17(alpha)-acetoxy 19-nor pregna 4,6-diene optionally substituted in the 3 and/or 17(alpha) position, associated or mixed with a biologically acceptable inert excipient. The implants thus obtained are efficient contraceptive agents having an active duration of a least one year with minimum secondary effects.

2122827 9406437 PCTABS00165 La présente demande se rapporte au domaine de la chimie thérapeutique et plus particulièrement à celui de la pharmacotechnie. Elle a tout particulièrement pour objet de nouvelles compositions adaptées à la voie locale et plus précisément aux formes destinées à être placées dans le tissu sous-cutané et communément appelées implants. Ceux-ci sont de différentes natures (hydrophobes, hydrophiles, biodégradables) et de différents types (réservoir, matriciel). Ces implants incorporent une dose efficace d'un dérivé du 3,20-dioxo 6-méthyl 17.alpha.-acétoxy 19-nor pregna 4,6-diène éventuellement substitué en 3 et/ou en 17.alpha., en association ou en mélange avec un excipient inerte biologiquement-acceptable. Les implants ainsi réalisés sont des agents contraceptifs efficaces et ayant une durée d'action d'au moins un an avec le minimum d'effets secondaires.

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