Patent ID: 9026228
Filing Date: 2015-05-05
Classification: A61N

Abstract:
1. An implantable electrode array adapted for epidural implantation for electrically stimulating the spinal cord, the electrode array comprising first, second and third longitudinally extending columns with each column including a plurality of stimulation electrodes spaced apart and the first and second columns being laterally spaced apart from the third column along opposite sides of the third column, the stimulation electrodes of the first and second columns having substantially similar center-to-center spacing of adjacent electrodes, and the stimulation electrodes of the third column having a center-to-center spacing of adjacent electrodes that is no greater than approximately one half of the center-to-center spacing of adjacent electrodes of the first and second columns, wherein the plurality of stimulation electrodes for the third column includes at least double the number of electrodes for either the first or second columns.