发明名称 |
OSMOTIC DELIVERY SYSTEM HAVING SPACE EFFICIENT PISTON |
摘要 |
An osmotic delivery system having a space efficient piston. The capsule has an interior holding the piston, a beneficial agent, and an osmotic agent. The piston is movable with respect to an interior surface of the capsule, and defines a movable seal with the interior surface of the capsule. The movable seal separates the osmotic agent from the beneficial agent. The piston has a recess that receives at least a portion of the osmotic agent. The osmotic agent imbibes liquid from a surrounding environment through a semipermeable body to cause the piston to move and in turn cause delivery of the beneficial agent from the capsule.
|
申请公布号 |
WO0040218(A2) |
申请公布日期 |
2000.07.13 |
申请号 |
WO1999US30783 |
申请日期 |
1999.12.21 |
申请人 |
|
发明人 |
ECKENHOFF, BONNIE, J.;THEEUWES, FELIX;ECKENHOFF, JAMES, B. DI |
分类号 |
A61M37/00;A61K9/00;A61K9/22;A61K9/52;A61M1/14;A61M1/16;(IPC1-7):A61K9/00 |
主分类号 |
A61M37/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|