Methods and apparatus for drug delivery involving phase changing formulations
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United States of America Patent
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Mar 4, 2003
Grant Date -
Jan 10, 2002
app pub date -
Sep 28, 1999
filing date -
Sep 28, 1999
priority date (Note) -
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Abstract
This invention relates to an apparatus and method of drug delivery on a human body surface. The formulation comprises a drug, a conversion agent capable of converting the formulation from a less solid phase to a coherent, soft, solid phase, and a vehicle medium or carrier for the drug and conversion agent. The drug formulation is applied to this human body surface in its less than solid phase and is subsequently converted to a soft solid phase while the drug is being delivered through the human body surface. After delivery of the drug is complete, the soft solid formulation can be removed or peeled from the body surface as a coherent solid formulation. The drug formulation provides control over drug delivery rates and allows the formulation to be removed without leaving a messy, residual formulation on the body surface.
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