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AssigneePathmaker Neurosystems Inc.
InventorsGerald Jennings, Andrew Ferencz
Estimating the term…
The present invention improves control of currents in a multi-site direct current neurostimulation system. Precise control incorporates three constant current sources in a system consisting of spinal, polarizing and peripheral circuits. Constant current sources (sinks) are placed on the high side of the peripheral circuit and one sink in series on the low side of the spinal circuit in a four electrode configuration, for maintaining both predetermined currents, and current ratios, as the electrode/skin impedance and body impedance vary over the course of a treatment. Resistive steering is also implemented.
A DC neurostimulation system for providing trans-spinal direct current stimulation at a spinal cord location associated with control of a target body part of a sentient being, and direct current stimulation of the peripheral nerve associated with control of the target body part, configured to deliver stimulation via electrodes at skin interfaces, comprising:
The system of claim 8 having three circuits, spinal, peripheral and polarization, and further configured to provide resistive control in one leg of one of these circuits with current split between polarization and spinal circuits 65/35%, ranging about +/−10%.
The system of claim 9, further including resistive current control in the low voltage spinal (return) side of the spinal circuit.
The system of claim “1” utilizing one of the set of varying, pulsed and constant current DC.
A method for operating a DC neurostimulation system for providing trans-spinal direct current stimulation at a spinal cord location associated with control of a target body part, and direct current stimulation of the peripheral nerve associated with control of a target body part, with a power source supplying controlled flows of direct current in spinal, peripheral and resulting polarization circuits, comprising the step of splitting current between the polarization and spinal circuits approximately 65/35% +/−10%.
Dependencies are inferred from the claim text.