Medical device with multiple coating layers
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United States of America Patent
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N/A
Issued Date -
May 19, 2005
app pub date -
Aug 20, 2004
filing date -
Apr 8, 2003
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
An implantable medical device that contains two coating layers disposed above at least one of its surfaces. The first coating layer contains a biologically active material; and the second coating layer contains a polymeric material and nanomagnetic material disposed on the first coating layer; the second coating layer is substantially free of the biologically active material. The nanomagentic material has a saturation magentization of from about 2 to about 3000 electromagnetic units per cubic centimeter, and it contains nanomagnetic particleswith an average particle size of less than about 100 nanometers; the average coherence length between adjacent nanomagnetic particles is less than 100 nanometers.
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