Implantable medical devices fabricated from polymer blends with star-block copolymers
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United States of America Patent
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Sep 11, 2012
Grant Date -
Oct 9, 2008
app pub date -
Apr 9, 2007
filing date -
Apr 9, 2007
priority date (Note) -
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Abstract
Implantable medical devices are fabricated from polymer blends with star-block copolymers. The polymer blends include a biodegradable matrix polymer blended with a biodegradable star-block copolymer. The copolymer has at least three arms and the arms include inner segments and outer segments. The inner segments form a discrete phase within a continuous phase, the continuous phase including the matrix polymer and the outer segments. The segments can include units having acidic degradation products that enhance the degradation rate of the blend.
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