Active agent eluting matrices with particulates
US8241921B2 · kind B2 · utility
4Cited by
22References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 28, 2009 |
| Grant date | Aug 14, 2012 |
| Priority date | — |
| Expiry date | Jul 6, 2030 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61L2300/622
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The present invention is directed to polymeric matrices for the controlled release of a hydrophilic bioactive agent. Generally, the elution control matrix includes a polymeric matrix having a first polymer and a plurality of microparticles that include the hydrophilic bioactive agent. In one embodiment, the matrix includes a polymer comprising hydrophilic and hydrophobic portions. In another embodiment, the microparticles include a crosslinked hydrophilic polymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.