TISSUE STIMULATION METHOD AND APPARATUS
First Claim
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1. A tissue stimulation apparatus comprising:
- a stimulation lead (102) having a longitudinal axis (106), wherein the lead is insertable in a tissue to be stimulated (111) in a direction substantially parallel to the longitudinal axis;
a plurality of electrodes (112) carried by the lead and disposed about the longitudinal axis in a two-dimensional array, wherein a stimulating field generated by an electrode is steerable in at least three dimensions.
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Abstract
A stimulation apparatus includes a stimulation lead (102), a multiplexer (114), a stimulation signal generator (116), and a signal detector (120). The stimulation lead (102) includes a plurality of stimulation electrodes (112) disposed in an array about a distal portion of the lead body (110). The arrangement of the electrodes (112) facilitates the controlled steering of stimulating electrical field (118) in three dimensions. Four dimensional field steering may also be provided.
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Citations
31 Claims
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1. A tissue stimulation apparatus comprising:
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a stimulation lead (102) having a longitudinal axis (106), wherein the lead is insertable in a tissue to be stimulated (111) in a direction substantially parallel to the longitudinal axis; a plurality of electrodes (112) carried by the lead and disposed about the longitudinal axis in a two-dimensional array, wherein a stimulating field generated by an electrode is steerable in at least three dimensions. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A tissue stimulation method comprising:
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inserting a stimulation lead (102) in a tissue of interest, wherein the lead (102) includes a plurality of electrodes (112) disposed angularly about a longitudinal axis (106); applying an electrical stimulus to a first stimulating electrode (112C) so as to generate a stimulating electric field (118); varying an electrical stimulus applied to at least first and second shielding electrodes (112A) so as to vary a distribution of the stimulating electric field in three spatial dimensions. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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28. A tissue stimulation apparatus comprising:
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a stimulation lead (102) having a longitudinal axis (106), wherein the lead includes a substantially rotationally symmetric exterior cross section. a plurality of stimulation electrodes (112) carried by the lead and disposed about the longitudinal axis in a two-dimensional close-packed array. - View Dependent Claims (29, 30, 31)
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Specification