A - Human Necessities – 61 – N
Patent
A - Human Necessities
61
N
A61N 1/30 (2006.01)
Patent
CA 2123428
2123428 9309842 PCTABS00022 A transdermal device for the controlled administration of a drug to the skin comprises a reservoir (12) for the drug and an electric circuit which includes an electrode system (13, 14) which is operable to actively transport the drug in a controlled manner from the reservoir (12) towards the skin for transport therethrough, the skin not being part of the electric circuit, and the drug passing through an electrode (13) of said electrode system (13, 14) during the active transport to the skin. The electrode (13) is disposed between the reservoir (12) for the drug and an optional transit chamber (15). The electrode (13) can be permeable to the drug or the electrode can function as a gate, being permeable to the drug in the open condition and less permeable to the drug in the closed condition. The operation of the gate can be determined by the composition or the structure of the electrode (13). The device achieves drug delivery rates comparable to those achieved with iontophoretic devices.
Corish John
Corrigan Owen Ignatius
Elan Corporation Plc
Kirby Eades Gale Baker
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