Delivery system comprising fluid ingress and drug egress
AssigneeAlza Corporation
InventorsJudy A. Magruder, James B. Eckenhoff, Richard Cortese, Jeremy C. Wright, John R. Peery
Life of this patent
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Abstract
A delivery system is disclosed for delivering a beneficial agent to an animal. The delivery system comprises a wall that surrounds a lumen, said wall comprising a composition that limits the passage of fluid into the system and a composition that permits the passage of fluid into the system. The lumen comprises a beneficial agent and an expandable member. The delivery system comprises an exit means for delivering the beneficial agent.
Claims3
A dispenser for storing and protecting a beneficial agent and for dispensing the beneficial agent to a fluid environment of use, the dispenser comprising:
- (a) a wall defining a housing, said housing comprising a first wall member and a second wall member;
- wherein the,
- (b) first wall member (1) surrounds an internal space for storing a beneficial agent;
- (2) comprises a wall forming composition comprising means for protecting the beneficial agent by substantially limiting the passage of fluid into the dispenser;
- and (3) comprises means for forming the dispenser with a second wall member;
- and wherein the,
- (c) second wall member (1) surrounds an internal space, (2) comprises a compositional means for permitting fluid to enter the dispenser;
- and, (3) comprises means for forming dispenser with the first wall member;
- (d) 5 nanograms to 20 grams of a beneficial agent in the internal space for storing and for protecting the beneficial agent;
- (e) means in the internal space that permits fluid to enter the dispenser for aiding in delivering the beneficial agent from the dispenser;
- and,
- (f) exit means in the dispenser for delivering a dose of the beneficial agent from the dispenser to the environment over time.
Dependencies are inferred from the claim text.