Osmotic device for delayed delivery of agent

Details Osmotic device for delayed delivery of agent Osmotic device for delayed delivery of agent

A - Human Necessities

61

M

A61M 31/00 (2006.01) A01N 25/34 (2006.01) A61J 3/00 (2006.01) A61K 9/00 (2006.01) A61K 9/48 (2006.01)

Patent

CA 2098992

2098992 9213521 PCTABS00014 The present invention is directed to a fluid-imbibing dispensing device (1) for the initially delayed delivery of an active agent (20) to a fluid environment of use and to a method of using the dispensing device. The dispenser comprises a housing (12) having a first wall section (14) and a second wall section (16) in slidably telescoping arrangement with each other, which housing (12) maintains its integrity in the environment of use; an internal compartment (18) surrounded and defined by the housing (12); at least one active agent formulation (20) in the compartment; and an expansion means (22) and a partition layer (24) in the compartment for separating apart the first and second wall sections (14, 16) of the housing (12) after exposure to the environment of use to expose the active agent formulations (20) to the environment of use.

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