Patent ID: 9656084
Date: 2017-05-23
CPC Classifications: A61N

Claim:
1. A neurostimulation device, comprising: a plurality of electrical terminals configured for being respectively coupled to a plurality of stimulation electrodes implanted within tissue of a patient; stimulation output circuitry configured for delivering time-varying electrical current to at least one of the stimulation electrodes via at least one of the electrical terminals to stimulate the tissue of the patient, the stimulation output circuitry including a shunt capacitance coupled to the at least one of the stimulation electrodes via the at least one of the electrical terminals that would, without compensation, absorb charge from or inject charge into the tissue in response to time-varying changes in the delivered time-varying electrical current, thereby causing an uncompensated electrical waveform to be delivered to the tissue adjacent the at least one of the stimulation electrodes, wherein the uncompensated electrical waveform deviates from a desired electrical waveform; and a controller configured for directing the stimulation output circuitry to at least partially compensate for the absorbed or injected charge, thereby causing a compensated electrical waveform to be delivered to the tissue adjacent the at least one of the stimulation electrodes, wherein the compensated electrical waveform matches the desired electrical waveform more closely than the uncompensated electrical waveform matches the desired electrical waveform.