Active agent dispenser and process for making same

Details Active agent dispenser and process for making same Active agent dispenser and process for making same

A - Human Necessities

61

M

128/104, 167/153

A61M 35/00 (2006.01) A61K 9/00 (2006.01) A61M 31/00 (2006.01)

Patent

CA 1056685

ABSTRACT OF THE DISCLOSURE A laminated active agent dispenser, such as a three layer laminate drug dispenser comprising a core lamina of a crystalline drug of low water solubility dispersed homogeneously in a polymer matrix of permeability, P, to the drug, the core lamina having a thickness, 2t, interposed between outer laminas made of a drug release rate controlling polymer of permea- bility, P', to the drug, each outer lamina having a thickness, t', such that the core lamina has an exposed surface area, A, and the outer laminas have a combined exposed surface area, A', and Image and Image wherein k is a constant whose value is dependent upon the geometrical shape of the dispenser.

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