Method of controlled drug delivery from implant device
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United States of America Patent
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Feb 22, 2011
Grant Date -
Jul 7, 2005
app pub date -
Jan 21, 2005
filing date -
Jul 2, 1996
priority date (Note) -
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status (Latency Note)
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Abstract
Reservoir-based medical devices are provided. In one embodiment, the medical device comprises a substrate; at least two discrete, microfabricated reservoirs provided in spaced positions across at least one surface of the substrate; discrete reservoir caps covering the at least two reservoirs; and control circuitry for selectively disintegrating the reservoir caps to open the reservoirs. The reservoirs of the device can include a diagnostic reagent or other molecules useful in medical diagnostics. In one embodiment, the reservoir cap comprises an anode and the control circuitry comprises a cathode and a power source for creating an electric potential between the cathode and the anode. Application of the electric potential causes the reservoir cap to disintegrate, thereby opening the reservoir.
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