Medical device with controlled reservoir opening
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United States of America Patent
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Apr 5, 2011
Grant Date -
Aug 26, 2004
app pub date -
Feb 20, 2004
filing date -
Jul 2, 1996
priority date (Note) -
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Abstract
Implantable medical devices are provided for controlled release of drugs. In one embodiment, the device comprises a support structure; two or more discrete reservoirs provided in spaced positions across at least one surface of the support structure; and a release system loaded in each of the reservoirs, the release system including drug molecules dispersed in a degradable matrix material, wherein release of the drug molecules from the reservoir is controlled by in vivo disintegration of the matrix material. In another embodiment, the device comprises a support structure; two or more discrete reservoirs provided in spaced positions across at least one surface of the support structure; and a release system loaded in each of the reservoirs, the release system including drug molecules dispersed in a non-degradable matrix material, wherein release of the drug molecules from the reservoir is controlled by in vivo diffusion of the drug molecules from the matrix material.
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