In situ activation of microcapsules
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United States of America Patent
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-
Aug 8, 2000
Issued Date -
N/A
app pub date -
May 15, 1998
filing date -
Dec 2, 1994
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Disclosed are microcapsules comprising a polymer shell enclosing two or more immiscible liquid phases in which a drug, or a prodrug and a drug activator are partitioned into separate phases, or prevented from diffusing out of the microcapsule by a liquid phase in which the drug is poorly soluble. Also disclosed are methods of using the microcapsules for in situ activation of drugs, where upon exposure to an appropriate energy source the internal phases mix and the drug is activated in situ.
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