Deep brain stimulation current steering with split electrodes

摘要

A device for brain stimulation includes a lead having a longitudinal surface, a proximal end, a distal end and a lead body. The device also includes a plurality of electrodes disposed along the longitudinal surface of the lead near the distal end of the lead. The plurality of electrodes includes a first set of segmented electrodes comprising at least two segmented electrodes disposed around a circumference of the lend at a first longitudinal position along the lead; and a second set of segmented electrodes comprising at least two segmented electrodes disposed around a circumference of the lead at a second longitudinal position along the lead. The device further includes one or more conductors that electrically couple together all of the segmented electrodes of the first set of segmented electrodes.

主权项

1. A method for brain stimulation, the method comprising:
inserting a lead into a brain of a human, the lead comprising a lead body having a longitudinal surface and a distal end, a plurality of electrodes disposed along the longitudinal surface of the lead body near the distal end of the lead body, and a plurality of conductors extending along the lead body and coupling to the electrodes, the plurality of electrodes comprising a plurality of sets of segmented electrodes spaced apart axially along the longitudinal surface of the lead body, each set comprising at least three segmented electrodes disposed around a circumference of the lead body at a longitudinal position along the lead body, and a tip electrode disposed at, and covering, the distal end of the lead body; selectively producing at least one of an anodic current or a cathodic current at the segmented electrodes to stimulate a target neuron using the plurality of electrodes; and incrementally shifting the anodic current or the cathodic current in at least two incremental steps from any one of the segmented electrodes to an adjacent one of the segmented electrodes.