Abuse-resistant transdermal dosage form

A - Human Necessities – 61 – K

Patent

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Details

A61K 9/70 (2006.01) A61K 9/00 (2006.01) A61K 31/4468 (2006.01) A61K 31/485 (2006.01)

Patent

CA 2523709

The present invention comprises a transdermal dosage form comprising an active agent component having a skin contacting surface, an adverse agent component, and a barrier. The dosage form comprises at least one channel passing between proximal and distal surfaces of the active agent component. The barrier is interposed between the active agent component and the adverse agent component. In one aspect, the barrier is permeable to selected solvents and impermeable to diffusion of active and adverse agents in the absence of said solvent. In another aspect, the barrier is discontinuous, impermeable to diffusion of active and adverse agents, and the dosage form comprises at least one channel passing between the skin-contacting surface and the adverse agent component.

La présente invention concerne une forme posologique administrable par voie transdermique, comprenant un composant à principe actif pourvu d'une surface de contact avec la peau, un composant s'opposant au principe actif, et une barrière. Cette forme posologique comporte au moins un canal passant entre la surface proximale et la surface distale du composant à principe actif. La barrière fait écran entre le composant à principe actif et le composant s'opposant au principe actif. Dans un aspect de l'invention, la barrière est perméable à des solvants sélectionnés mais imperméable à la diffusion des principes actifs et de l'agent opposant en l'absence dudit solvant. Dans un autre aspect de l'invention, la barrière est discontinue, imperméable à la diffusion du principe actif et de l'agent s'opposant au principe actif, la forme posologique comprenant au moins un canal passant entre la surface en contact avec la peau et le composant s'opposant au principe actif.

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