Patent ID: 6775570
Filing Date: 2004-08-10
Classification: A61N

Abstract:
An iontophoretic fluid delivery device comprising:a cationic chamber defining a volume in which to hold a cationic substance, a wall of said cationic chamber having a first passageway permitting migration therethrough by ions; an anionic chamber defining a volume in which to hold an anionic substance, a wall of said anionic chamber having a second passageway permitting migration therethrough by ions; wherein said first and second passageways are oriented and arranged on a surface of a container to enable creation of an ion conducting path, through a cooperating body, of an electrical circuit between said cationic and anionic chambers; a first electromotive cell comprising a mini battery, constructed to produce an approximately square-wave current discharge over its working life and comprising first and second poles of opposite electrical sign, said first electromotive cell being disposed in an electron conducting path configured to complete said electrical circuit; and a second conductive path, comprising an electronic component assembly comprising a resistor, disposed in an electric circuit parallel to said ion conducting path and between said first and second poles; wherein said resistor is sized in harmony with a capacity of said mini battery to deplete said mini battery in a desired treatment interval to limit a treatment dose from said iontophoretic fluid delivery device to a subject; wherein a quantity of energy from said mini battery is substantially exhausted after delivery of said treatment dose.