Colloidal metal labeled microparticles and methods for producing and using the same
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United States of America Patent
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Issued Date -
Dec 12, 2002
app pub date -
Sep 5, 2001
filing date -
Jun 8, 2001
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The present invention relates to polymeric materials that are labeled with colloidal metals, preferably colloidal gold, to processes for producing the labeled polymeric material, and to methods of using the materials in prophylactic, therapeutic and cosmetic applications. Specifically, the invention relates to porous injectable and implantable microparticles, preferably microspheres, that are associated with colloidal metals such that the microparticles are visible or detectable under regular light, by radiological and/or magnetic resonance imaging techniques, or both. The microparticles having colloidal metals are particularly useful for embolization, dermal augmentation and tissue bulking, drug delivery, gene therapy, and other prophylactic, therapeutic or cosmetic medical applications.
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