Microparticles having a matrix interior useful for ultrasound triggered delivery of drugs into the bloodstream
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United States of America Patent
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Issued Date -
Nov 20, 2003
app pub date -
May 17, 2002
filing date -
May 17, 2002
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A microparticle composition is provided for delivery of a pharmaceutical agent by ultrasound triggering. The microparticles have a porous, gas-containing interior polymer matrix and a plurality of cavities in the matrix which contain a gas and the agent. Methods for forming the microparticles and their use in ultrasonic diagnostic imaging and drug delivery are also provided.
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