Solubility parameter based drug delivery system and method for altering drug saturation concentration
US6221383A · kind A · utility
135Cited by
41References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 25, 1999 |
| Grant date | Apr 24, 2001 |
| Priority date | — |
| Expiry date | May 25, 2019 |
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.