IMPLANTABLE MEDICAL DEVICE THAT USES ELECTRICAL CURRENT STEERING BY MEANS OF OUTPUT IMPEDANCE MODULATION
First Claim
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1. A method of providing therapy to a patient implanted with a plurality of electrodes, the method comprising:
- conveying electrical stimulation current from at least two of the electrodes to at least one of the electrodes along at least two electrical paths through tissue of the patient; and
shifting the electrical stimulation current between the at least two electrical paths by actively adjusting one or more finite resistances respectively associated with one or more of the at least two electrical paths.
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Abstract
A method and system of providing therapy to a patient implanted with an array of electrodes is provided. Electrical stimulation current is conveyed from at least two of the electrodes to at least one of the electrodes along at least two electrical paths through tissue of the patient, and the electrical stimulation current is shifted between the electrical paths by actively adjusting one or more finite resistances respectively associated with one or more of the electrical paths.
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Citations
30 Claims
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1. A method of providing therapy to a patient implanted with a plurality of electrodes, the method comprising:
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conveying electrical stimulation current from at least two of the electrodes to at least one of the electrodes along at least two electrical paths through tissue of the patient; and shifting the electrical stimulation current between the at least two electrical paths by actively adjusting one or more finite resistances respectively associated with one or more of the at least two electrical paths. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A neurostimulation system, comprising:
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a plurality of electrical terminals configured for being respectively coupled to a plurality of electrodes; analog output circuitry configured for conveying electrical stimulation current between at least two of the electrical terminals to at least another of the electrical terminals through tissue, wherein the analog output circuitry includes one or more variable resistors respectively coupled to one or more of the electrical terminals; and control circuitry configured for adjusting the one or more variable resistors, thereby modifying the magnitudes of the electrical stimulation current at the at least two electrical terminals. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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Specification