Solubility parameter based drug delivery system and method for altering drug saturation concentration
US6024976A · kind A · utility
234Cited by
41References
66Claims
0Family size
Assignee
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Key dates
| Filing date | Aug 11, 1997 |
| Grant date | Feb 15, 2000 |
| Priority date | — |
| Expiry date | Aug 11, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB26F1/384
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A blend of at least two polymers, or at least one polymer and a soluble polyvinylpyrrolidone, in combination with a drug provides a pressure-sensitive adhesive composition for a transdermal drug delivery system in which the drug is delivered from the pressure-sensitive adhesive composition and through dermis when the pressure-sensitive adhesive composition is in contact with human skin. According to the invention, soluble polyvinylpyrrolidone can be used to prevent crystallization of the drug, without affecting the rate of drug delivery from the pressure-sensitive adhesive composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.