发明名称 |
Osmotic delivery systems and piston assemblies for use therein |
摘要 |
An osmotic delivery system is disclosed for delivering an active agent formulation to a fluid environment. The osmotic delivery system typically comprises a reservoir having a lumen that contains the active agent formulation and an osmotic agent formulation and a piston assembly positioned in the lumen to isolate the active agent formulation from the osmotic agent formulation. The piston assembly typically comprises a body constructed and arranged for positioning in the lumen. The body is typically made of a polymeric material that is, for example, resistant to leaching in an organic solvent. In one embodiment, the body is a columnar body having a rim at a distal end thereof for engaging and sealing against a wall of the reservoir and the piston assembly further comprises a spring retained at the distal end of the columnar body for biasing the rim of the columnar body against the wall of the reservoir.
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申请公布号 |
US2010185184(A1) |
申请公布日期 |
2010.07.22 |
申请号 |
US20100658570 |
申请日期 |
2010.02.09 |
申请人 |
INTARCIA THERAPEUTICS, INC. |
发明人 |
ALESSI THOMAS R.;DESJARDIN MICHAEL A.;LAM STAN;LAUTENBACH SCOTT D.;ZAMORA PAULINE C. |
分类号 |
A61M31/00;B23P11/00 |
主分类号 |
A61M31/00 |
代理机构 |
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