Multiple tunable central cathodes on a paddle for increased medial-lateral and rostral-caudal flexibility via current steering
First Claim
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1. A method of providing therapy to a patient, comprising:
- (a) disposing at least four electrodes adjacent spinal cord tissue of the patient in a medial-lateral electrode arrangement, wherein the at least four electrodes has two inner electrodes and two outer electrodes flanking the two inner electrodes;
(b) conveying electrical energy between the electrodes to create a medial-lateral electrical field;
(c) discretely moving a locus of the medial-lateral electrical field to one lateral side of the midline of the spinal cord tissue;
(d) discretely moving the locus of the medial lateral electrical field to the other lateral side of the midline of the spinal cord tissue; and
(e) repeating steps (c) and (d) to repeatedly move the locus of the medial-lateral field back and forth between the one lateral side and the other lateral side of the midline of the spinal cord tissue, whereby dorsal column nerve fibers on both sides of the midline of the spinal cord tissue are stimulated without stimulating the dorsal column nerve fibers along the midline of the spinal cord tissue.
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Abstract
A neurostimulation paddle lead, method of neurostimulation, and neurostimulation system are provided. The neurostimulation paddle lead carries a plurality of electrodes comprising at least four columns of electrodes having a spacing between two inner electrode columns less than a spacing between the inner electrode columns and adjacent outer electrode columns. The inner electrode columns may also be longitudinally offset from the outer electrode columns. The methods and neurostimulation systems steer current between the electrodes to modify a medial-lateral electrical field created adjacent spinal cord tissue.
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Citations
12 Claims
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1. A method of providing therapy to a patient, comprising:
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(a) disposing at least four electrodes adjacent spinal cord tissue of the patient in a medial-lateral electrode arrangement, wherein the at least four electrodes has two inner electrodes and two outer electrodes flanking the two inner electrodes; (b) conveying electrical energy between the electrodes to create a medial-lateral electrical field; (c) discretely moving a locus of the medial-lateral electrical field to one lateral side of the midline of the spinal cord tissue; (d) discretely moving the locus of the medial lateral electrical field to the other lateral side of the midline of the spinal cord tissue; and (e) repeating steps (c) and (d) to repeatedly move the locus of the medial-lateral field back and forth between the one lateral side and the other lateral side of the midline of the spinal cord tissue, whereby dorsal column nerve fibers on both sides of the midline of the spinal cord tissue are stimulated without stimulating the dorsal column nerve fibers along the midline of the spinal cord tissue. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method of providing therapy to a patient using at least four electrodes disposed adjacent spinal cord tissue of the patient in a medial-lateral electrode arrangement, wherein the at least four electrodes has two inner electrodes and two outer electrodes flanking the two inner electrodes, the method comprising:
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(a) conveying electrical energy between the electrodes to create a medial-lateral electrical field, wherein at least one of the inner electrodes is configured as a cathode, and at least one of the outer electrodes is configured as an anode; (b) discretely moving a locus of the medial-lateral electrical field to one lateral side of the midline of the spinal cord tissue; (c) discretely moving the locus of the medial lateral electrical field to the other lateral side of the midline of the spinal cord tissue; and (d) repeating steps (b) and (c) to repeatedly move the locus of the medial-lateral field back and forth between the one lateral side and the other lateral side of the midline of the spinal cord tissue, whereby dorsal column nerve fibers on both sides of the midline of the spinal cord tissue are stimulated without stimulating the dorsal column nerve fibers along the midline of the spinal cord tissue. - View Dependent Claims (8, 9, 10, 11, 12)
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Specification