A controlled release drug suspension delivery device

Details A controlled release drug suspension delivery device A controlled release drug suspension delivery device

A - Human Necessities

61

K

A61K 9/24 (2006.01) A61J 3/06 (2006.01) A61K 9/20 (2006.01)

Patent

CA 2206211

A device is disclosed for the controlled delivery of a beneficial agent, the device consisting of (i) a core comprising at least two layers, wherein at least one layer comprises a beneficial agent and a polymer which forms microscopic gel beads upon hydration and at least one layer which comprises a polymer which forms microscopic gel beads upon hydration; and (ii) an impermeable, insoluble coating which adheres to and surrounds the core and contains apertures which provide an area for the hydration and release of the microscopic gel beads.

L'invention concerne un dispositif conçu pour la libération contrôlée d'un agent bénéfique. Il comprend (i) un noyau constitué d'au moins deux couches, dont au moins une renferme un agent bénéfique et un polymère qui prend la forme de perles de gel microscopiques en s'hydratant et au moins une autre couche qui renferme un polymère qui revêt la forme de perles de gel microscopiques à l'hydratation; et (ii) un revêtement imperméable, insoluble qui entoure et adhère au noyau et qui est pourvu d'ouvertures servant de surface d'hydratation et permettant la libération des perles de gel microscopiques.

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