Device for transdermal delivery of active principles

A - Human Necessities – 61 – K

Patent

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A61K 9/70 (2006.01)

Patent

CA 2574682

The present invention relates to a device for the delivery of active principles for dermal and, in particular, transdermal application having the form of a two-layered patch consisting of a first layer having a homogeneous composition and comprising at least one active principle, a water-soluble film- forming agent and a hydrophilic adhesive polymer, and of a second layer joined in a permanent manner to the first and having a water vapour permeability of less than 500 g/m2 in 24 hours.

Cette invention concerne un dispositif de distribution de principes actifs pour application dermique et, notamment, transdermique, ayant la forme d'un tampon bicouche composé d'une première couche contenant une composition homogène et au moins un principe actif, un agent filmogène soluble dans l'eau et un polymère adhésif hydrophile, et d'une seconde couche jointe de façon permanente à la première et ayant une perméabilité à la vapeur d'eau inférieure à 500 g/m2 pour 24 heures.

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