Patent ID: 9008783
Filing Date: 2015-04-14
Classification: A61N

Abstract:
1. A method of providing therapy to a patient, comprising: disposing at least three columns of electrodes adjacent spinal cord tissue of the patient, the at least three electrode columns having at least one inner electrode column and two outer electrode columns flanking the inner electrode column; configuring an electrode of each of the at least one inner electrode column as a cathode, and at least one electrode of each of the outer electrode columns as anodes; conveying electrical energy between the cathode of each of the at least one inner electrode column and the anodes to create a medial-lateral electrical field that stimulates the spinal cord tissue; determining a depth of the cerebral spinal fluid (dCSF) at the cathode; and incrementally shifting cathodic current between the cathode and another electrode of each of the at least one inner electrode column, based on the determined depth of the dCSF, to modify the medial-lateral electrical field, such that incremental shifting of the cathodic current between the cathode and the other electrode of each of the at least one inner electrode column modifies the rostral-caudal size of the medial-lateral electrical field.