SYSTEM AND METHOD FOR MAPPING ARBITRARY ELECTRIC FIELDS TO PRE-EXISTING LEAD ELECTRODES
First Claim
1. A method of stimulating tissue using a plurality of electrodes, comprising:
- determining desired electrical parameter values at a plurality of spatial points;
selecting a plurality of constituent current sources adjacent the locations of the electrodes;
determining the relative strengths of the constituent current sources that, when combined, result in estimated electrical parameter values at the spatial points that best matches the desired electrical parameter values at the spatial points;
selecting the polarity and percentage of electrical current to be associated with each of the electrodes based on the determined strengths of the constituent current sources; and
conveying electrical current through the plurality of electrodes in accordance with the selected electrical current magnitudes to stimulate the tissue.
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Abstract
A method and system for stimulating tissue using a plurality of electrodes is provided. Desired electrical parameter (e.g., field potential) values are determined at a plurality of spatial points. A plurality of constituent current sources is selected at the locations of the electrodes. The relative strengths of the constituent current sources that, when combined, result in estimated electrical parameter (e.g., field potential)|values at the spatial points that best matches the desired electrical parameter values at the spatial points are determined. The polarity and percentage of electrical current to be associated with each of the electrodes is selected based on the determined strengths of the constituent current sources. Electrical current is conveyed through the plurality of electrodes in accordance with the selected electrical current magnitudes to stimulate the tissue.
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Citations
34 Claims
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1. A method of stimulating tissue using a plurality of electrodes, comprising:
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determining desired electrical parameter values at a plurality of spatial points; selecting a plurality of constituent current sources adjacent the locations of the electrodes; determining the relative strengths of the constituent current sources that, when combined, result in estimated electrical parameter values at the spatial points that best matches the desired electrical parameter values at the spatial points; selecting the polarity and percentage of electrical current to be associated with each of the electrodes based on the determined strengths of the constituent current sources; and conveying electrical current through the plurality of electrodes in accordance with the selected electrical current magnitudes to stimulate the tissue. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A neurostimulation control system for a plurality of electrodes, comprising:
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a user interface configured for receiving an input from a user; and at least one processor configured for determining desired electrical parameter values at a plurality of spatial points, selecting a plurality of constituent current sources adjacent the locations of the electrodes, determining the relative strengths of the constituent current sources that, when combined, result in estimated electrical parameter values at the spatial points that best matches the desired electrical parameter values at the spatial points, selecting the polarity and percentage of electrical current to be associated with each of the electrodes based on the determined strengths of the constituent current sources, and generating a set of stimulation parameters from the selected polarity and percentage of electrical currents. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34)
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Specification