发明授权
US4587117A Medical device for delivering drug to pH environments greater than 3.5
失效
将药物输送到大于3.5的pH环境的医疗设备
- 专利标题： Medical device for delivering drug to pH environments greater than 3.5
- 专利标题（中）： 将药物输送到大于3.5的pH环境的医疗设备
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申请号： US693649申请日： 1985-01-22
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公开(公告)号： US4587117A公开(公告)日： 1986-05-06
- 发明人: David Edgren , Patrick S. L. Wong , Felix Theeuwes
- 申请人： David Edgren , Patrick S. L. Wong , Felix Theeuwes
- 申请人地址： CA Palo Alto
- 专利权人： Alza Corporation
- 当前专利权人： Alza Corporation
- 当前专利权人地址： CA Palo Alto
- 主分类号： A61K9/00
- IPC分类号： A61K9/00 ; A61K9/32 ; A61K9/36
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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