Patent ID: 9440077
Filing Date: 2016-09-13
CPC Classification: A61N,H03K

Claim Text:
1. An electrical stimulation device for providing sequential bipolar pulse stimulation to an area of a living body via one or more electrode leads applied to the area, comprising: a substantially constant voltage supply; a current pulse generating circuit comprising output nodes for operative coupling to the one or more electrode leads, and configured for operative coupling to the substantially constant voltage supply, said current pulse generating circuit comprising positive and negative stimulation paths drawing from said substantially constant voltage supply to respectively apply positive and negative currents through the area via the one or more electrode leads, said stimulation paths comprising respective capacitive elements, wherein periodic alternative activation of said stimulation paths provides the sequential bipolar pulse stimulation, said stimulation paths comprising a positive stimulation loop and a negative stimulation loop, each one of which serially encompassing said output nodes, drawing from said substantially constant voltage supply, and comprising respective loop activation switches and said respective capacitive elements, wherein a capacitance ratio of said capacitive elements dictates, at least in part, an amplitude ratio of said positive and negative currents, the electrical stimulation device further comprising a controller configured for alternatively activating said loop activation switches to provide negative and positive current pulses, a duration ratio of which being inversely proportional to said capacitance ratio.