Juxtaposed laminated arrangement
AssigneeAlza Corporation
InventorsFelix Theeuwes, Patrick S. L. Wong, Richard Cortese, James B. Eckenhoff
Life of this patent
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Abstract
A dispenser is enclosed for delivering a beneficial agent to an enviroment of use. The dispenser comprising a wall that surrounds an internal space comprising a first mean in the dispenser for changing from a dispenser state to an environment of use state on leaving the dispenser, a beneficial agent in the first means, and a second means in the dispenser for aiding in displacing the first means from the dispenser.
Claims6
A juxtaposed laminated arrangement useful for manufacturing a dispenser, which laminate when disposed in the dispenser and the dispenser is in operation administers a beneficial agent to a biological fluid environment of use, wherein the laminated arrangement comprises:
- a first lamina means for changing from an initial physical state when inside the dispenser to a different physical state when outside the dispenser, which first lamina comprises the beneficial agent and transports the beneficial agent from the dispenser to the biological environment;
- and, a second lamina means for consuming space inside the dispenser, which second lamina comprises a hydrophilic composition that on contact with fluid from the environment that enters the dispenser absorbs the fluid and thereby exhibits a 2 to 50 fold volume increase for consuming space.
A juxtaposed laminated arrangement useful for manufacturing a dispenser for administering a beneficial agent to a biological environment of use, wherein the laminate arrangement comprises:
- a first lamina means for changing from a first physical state when disposed inside the dispenser to a second physical state outside the dispenser, which lamina comprises a beneficial agent and is a carrier for administering the beneficial agent to the environment of use;
- and a second lamina means for consuming space when disposed inside the dispenser, which second lamina means comprises a solute that mixes with aqueous fluid present in the environment of use that enters the dispenser and produces a solution that consumes space inside the dispenser.
Dependencies are inferred from the claim text.