Patent ID: 7136698
Filing Date: 2006-11-14
Classification: A61N

Abstract:
1. A device for delivering a therapeutic agent through a body surface by electrotransport, the device having a donor reservoir containing the therapeutic agent and being adapted to be placed in therapeutic agent transmitting relation with the body surface, the device also having a delivery area, a source of electrical power and a current controller which applies a pulsing DC current with a duty cycle to the reservoir and the body surface, the pulsing current having a periodic waveform including a wave length, a frequency, and first and second segments with corresponding average magnitudes, the device also having a current density defined by the pulsing current divided by the delivery area, wherein the current controller limits the frequency to less than or equal to about 100 Hz and wherein the current controller generates the first segment greater than or equal to about 5 msec and the device is adjustable to vary the duty cycle of pulsing.