Patent ID: 6107777
Filing Date: 2000-08-22
Classification: H01M,H02J,Y02E

Abstract:
A controller for controlling an iontophoretic drug delivery system comprising:a circuit for causing a higher rate of discharge of at least one of a plurality of serially-connected similar cells forming a battery, said battery capable of supplying a current to the iontophoretic drug delivery system controlled by said controller, said circuit comprising:a switch connected to a first electrode of the at least one cell having an output voltage;a resistor connected in series with said switch and to a cell additionally discharging through said resistor when said switch is closed; anda reverse-biased diode connected in parallel to the at least one cell, said reverse-biased diode causing the current to bypass the at least one cell when the at least one cell has an output voltage lower than a preselected voltage, thereby allowing said battery to complete a drug delivery cycle.