Osmotic device for administering certain drugs
US4765989A · kind A · utility
357Cited by
18References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 2, 1986 |
| Grant date | Aug 23, 1988 |
| Priority date | — |
| Expiry date | Sep 2, 2006 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K9/0004
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
An osmotic system is disclosed comprising a wall comprising in at least a part of a semipermeable material that surrounds a compartment. The compartment contains an osmotic composition comprising a beneficial drug selected from the group consisting of nifedipine, prazosin and doxazosin, and a second and different osmotic composition. A passageway in the wall connects the first composition with the exterior of the system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.