Drug delivery vehicles, methods of manufacture, and methods of use thereof
US8420121B2 · kind B2 · utility
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12Claims
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Key dates
| Filing date | Jul 28, 2010 |
| Grant date | Apr 16, 2013 |
| Priority date | — |
| Expiry date | Nov 4, 2030 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61P25/04
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Drug delivery vehicles that release one or more drugs, e.g., an opioid antagonist and/or an opioid, in response to changes in the chemistry of body fluids, specifically in response to changes in the partial pressure of CO2 in the environment of the hydrogel are described. The drug delivery vehicles include hydrogels that swell or shrink in response to changes in the partial pressure of CO2 in their environment, thus regulating release of an entrapped drug.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.