Calcium mineral-based microparticles and method for the production thereof
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United States of America Patent
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Jul 15, 1997
Grant Date -
N/A
app pub date -
Oct 4, 1995
filing date -
Oct 4, 1995
priority date (Note) -
Expired
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Abstract
A novel method of producing biodegradable microparticles is disclosed. Inorganic calcium salts are mixed with water to form a slurry. The slurry is then added to an oil bath which is then mixed to form an emulsion. The mixing continues for a period of time sufficient to form hardened microparticles. The hardened microparticles are then retrieved and characterized. Biologically active agents may be added to the slurry prior to emulsification, or they may be added to the hardened microparticles after production. The microparticles may be injected into a human being whereby they act as controlled release drug delivery vehicles.
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