Transdermal patch incorporating active agent migration...

A - Human Necessities – 61 – M

Patent

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Details

A61M 37/00 (2006.01) A61K 9/70 (2006.01)

Patent

CA 2637849

Devices (100) for administration of one or more active agents to the skin or mucosa of a host are formed in the nature of a double-disk patch (100). One outer layer (110) functions as the primary adhesive layer for adhering the patch (100) to the host. The other inner layer (122) contains at least one active agent to be administered to the host. The inner layer (122) is bonded to the outer layer (110) through an opening (114) provided in an interposed active agent impermeable release layer (104). The release layer (104) separates a circumferential portion of the active agent containing inner layer (122) from the outer adhesive layer (220) to inhibit migration of the active agent therebetween.

La présente demande porte sur des dispositifs (100) d'administration d'un ou de plusieurs principes actifs par la peau ou les muqueuses d'un hôte prenant la forme d'un timbre à double disque (100). Une couche externe (110) tient lieu de première couche adhésive permettant au timbre (100) d'adhérer sur l'hôte. L'autre couche interne (122) contient au moins un principe actif qui doit être administré à l'hôte. La couche interne (122) est collée à la couche externe (110) par une ouverture (114) pratiquée dans une couche de libération du principe actif intermédiaire (104) imperméable au principe actif. La couche de libération (104) sépare une portion circonférentielle de la couche interne contenant le principe actif (122) de la couche externe adhésive (220) pour empêcher toute migration du principe actif sur la circonférence du timbre.

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