Patent ID: 7496401

Claim:
An apparatus for performing transdermal drug delivery to be provided to a patient's skin, comprising: a measuring unit configured to measure a skin impedance of the patient's skin and to obtain a skin impedance value; and a transformer configured to create at least one burst of electrical pulses to be provided to the patient's skin, wherein each of the pulses in the at least one burst of electrical pulses is stabilized with respect to an amount of current, based on the skin impedance value; at least one electrode configured to receive the at least one burst of electrical pulses from the transformer and to provide the at least one burst of electrical pulses to the patient's skin; and a processor configured to receive a measured rms voltage corresponding to the at least one burst of electrical pulses, a measured rms current corresponding to the at least one burst of electrical pulses, and to divide the rms voltage by the rms current to obtain the skin impedance value, wherein the at least one burst of electrical pulses is stabilized with respect to the amount of current by way of a resistor disposed between a primary winding of the transformer and a supply voltage potential with no other elements provided therebetween.