Delivery system for beneficial agent over a broad range of rates
First Claim
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1. The delivery system for delivering the beneficial agent to an environment of use, the delivery system comprising:
- (a) a first section comprising a wall that surrounds an internal lumen and comprises an open end, said wall comprising a member selected from the group consisting of a polymer, glass and stainless steel composition that restricts the passage of fluid into the internal lumen;
(b) a second section comprising a wall that surrounds an internal lumen and comprises an enlarged open end that receives the end of the first section, said wall comprising a polymer composition that is permeable to the passage of fluid;
(c) a beneficial agent in the first section;
(d) an expandable member in the second section; and
(e) at least on exit passageway in the delivery system for delivering the beneficial agent to the environment of use.
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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.
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Citations
13 Claims
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1. The delivery system for delivering the beneficial agent to an environment of use, the delivery system comprising:
- (a) a first section comprising a wall that surrounds an internal lumen and comprises an open end, said wall comprising a member selected from the group consisting of a polymer, glass and stainless steel composition that restricts the passage of fluid into the internal lumen;
(b) a second section comprising a wall that surrounds an internal lumen and comprises an enlarged open end that receives the end of the first section, said wall comprising a polymer composition that is permeable to the passage of fluid;
(c) a beneficial agent in the first section;
(d) an expandable member in the second section; and
(e) at least on exit passageway in the delivery system for delivering the beneficial agent to the environment of use. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
- (a) a first section comprising a wall that surrounds an internal lumen and comprises an open end, said wall comprising a member selected from the group consisting of a polymer, glass and stainless steel composition that restricts the passage of fluid into the internal lumen;
Specification