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公开(公告)号：EP1140014B1
公开(公告)日：2003-03-19
申请号：EP99967575.4
申请日：1999-12-21
申请人： Alza Corporation
IPC分类号： A61K9/00
CPC分类号： A61K9/0004
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.
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公开(公告)号：EP1140014A2
公开(公告)日：2001-10-10
申请号：EP99967575.4
申请日：1999-12-21
申请人： Alza Corporation
IPC分类号： A61K9/00
CPC分类号： A61K9/0004
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.
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