IONTOPHORETIC DRUG DELIVERY DEVICE HAVING HIGH-EFFICIENCY DC-TO-DC ENERGY CONVERSION CIRCUIT
摘要
An iontophoresis system includes a transdermal patch (23) for placement against the skin of a patient and a controller (24, 26) electrically connected to the patch (23). The patch (23) includes an anode and cathode electrode, and holds an electrolyte and a medication. The controller includes a DC-DC converter circuit (24) which generates output voltage that is provided to the anode electrode. The controller also includes an adjustable current regulator circuit (26). The current regulator circuit (26) is coupled to the cathode electrode and is adjustable to provide a desired current flow through the electrodes and the skin of the patient. The DC-DC converter circuit (24) is responsive to the voltage drop across the electrodes and adjusts its ouptut voltage in response to this voltage drop and changes in the impedance of the patient's skin.
申请公布号
WO9707854(A1)
申请公布日期
1997.03.06
申请号
WO1996US14022
申请日期
1996.08.28
申请人
BECTON DICKINSON AND COMPANY;FLOWER, RONALD, J.;DEVINE, JAMES, M.