| 发明名称 |
Device for delivering drug to certain pH environments |
| 摘要 |
An osmotic device is disclosed for delivering a beneficial agent to a first environment having a pH of 1.0 to 3.5 inclusive and to a second environment having a pH of greater than 3.5 to 8.0. The device maintains its integrity in the first environment and loses its integrity in the second environment.
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| 申请公布号 |
US4503030(A) |
申请公布日期 |
1985.03.05 |
| 申请号 |
US19830501573 |
申请日期 |
1983.06.06 |
| 申请人 |
ALZA CORPORATION |
发明人 |
EDGREN, DAVID;WONG, PATRICK S. L.;THEEUWES, FELIX |
| 分类号 |
A61K9/00;(IPC1-7):A61K9/24;A61K9/22;A61K9/32;A61K9/36 |
主分类号 |
A61K9/00 |
| 代理机构 |
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代理人 |
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| 主权项 |
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