Technique for determining electrode current distribution
First Claim
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1. A system for delivering electrical stimulation to tissue using electrodes, the system including:
- an electrical stimulator configured to be connected to the electrodes and to deliver the electrical stimulation using a stimulation electrode distribution; and
a processor configured to define a virtual pole, select an electrode group from the electrodes, determine a distance between each electrode in the electrode group to the virtual pole, and determine the stimulation electrode distribution for use by the electrical stimulator to deliver the electrical stimulation using the determined distance.
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Abstract
A system and method of providing therapy to a patient using a plurality of electrodes implanted within the patient. A virtual multipole configuration is defined relative to the plurality of electrodes. The distance between each of a group of the electrodes and a virtual pole of the virtual multipole configuration is determined. A stimulation amplitude distribution is determined for the electrode group based on the determined distances, thereby emulating the virtual multipole configuration. Electrical energy is conveyed from the electrode group in accordance with the computed stimulation amplitude distribution.
18 Citations
20 Claims
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1. A system for delivering electrical stimulation to tissue using electrodes, the system including:
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an electrical stimulator configured to be connected to the electrodes and to deliver the electrical stimulation using a stimulation electrode distribution; and a processor configured to define a virtual pole, select an electrode group from the electrodes, determine a distance between each electrode in the electrode group to the virtual pole, and determine the stimulation electrode distribution for use by the electrical stimulator to deliver the electrical stimulation using the determined distance. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A system for delivering electrical stimulation to tissue using electrodes;
- the system including
an electrical stimulator configured to be connected to the electrodes and to deliver the electrical stimulation using a stimulation electrode distribution; and a processor configured to define a virtual pole, select an electrode group from the electrodes, determine a distance between each electrode in the electrode group to the virtual pole, and determine the stimulation electrode distribution for use by the electrical stimulator to deliver the electrical stimulation using the determined distance, wherein the processor is configured to compare a function of a distance between each of the plurality of electrodes and the virtual pole to a threshold value, exclude at least one electrode from the electrode group based on the comparison, determine the stimulation electrode distribution by weighting electrodes in the electrode group as a decreasing function of the determined distances, and compute a fractionalized current value for each electrode of the electrode group as a quotient of the weight for the each electrode divided by the sum of the weights for the electrode group. - View Dependent Claims (10)
- the system including
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11. A method, comprising:
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using a processor to define a virtual pole, select an electrode group from a plurality of electrodes, determine a distance from each electrode in the electrode group to the virtual pole, and determine a stimulation electrode distribution for delivering electrical stimulation using the determined distance; and using an electrical stimulator to deliver the electrical stimulation according to the determined stimulation electrode distribution. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification