Fluid retention assembly for an iontophoretic delivery device and associated method for preparing the same
US6546284B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 25, 2001 |
| Grant date | Apr 8, 2003 |
| Priority date | — |
| Expiry date | Jan 25, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K9/0048
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A fluid retention assembly for use in association with an iontophoretic drug delivery device comprising: a matrix, wherein the matrix is fabricated from a hydroxylated polyvinyl acetal; a first excipient associated with the matrix, wherein the first excipient comprises a substantially non-ionic thickening agent; and a second excipient associated with the matrix, wherein the second excipient comprises a hydration enhancer.A method for preparing a fluid retention assembly for use in association with an iontophoretic drug delivery device comprising the steps of: providing a first excipient, wherein the first excipient comprises a substantially non-ionic thickening agent; providing a second excipient, wherein the second excipient comprises a hydration enhancer; preparing a solution of the first and second excipients in a solvent; soaking a matrix fabricated from a hydroxylated polyvinyl acetal in the prepared solution; and drying the matrix.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.