Active agent eluting matrices with particulates
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United States of America Patent
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Dec 29, 2009
Grant Date -
Feb 14, 2008
app pub date -
Jun 28, 2007
filing date -
Jun 28, 2006
priority date (Note) -
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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.
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