Patent ID: 9180299
Filing Date: 2015-11-10
Classification: A61N

Abstract:
1. A stimulation lead having a distal end for providing therapeutic electrical stimulation to tissue in a target area, the lead comprising: an array of a plurality of stimulation elements and a plurality of sensing elements located at the distal end of the lead, the array including columns of two or more of the plurality of stimulation elements, the columns extending down a longitudinal length of the stimulation lead and spaced from one another around the circumference of the stimulation lead, at least one of the plurality of stimulation elements being adjacent to and surrounded by two or more of the plurality of sensing elements, each of the plurality of sensing elements configured to detect electrical signals, at least one of the plurality of sensing elements being positioned between two or more of the plurality of stimulation elements, a number of the plurality of sensing elements being greater than a number of the plurality of stimulation elements, the plurality of sensing elements comprising a plurality of sets of sensing elements, each of the sets of sensing elements comprising two or more sensing elements, each of the plurality of stimulation elements being directly associated with one of the sets of sensing elements, the association being based on a geometric relation between which sets of sensing elements surround which ones of the plurality of stimulation elements, and each set of sensing elements is associated with only one stimulation element that is surrounded by respective set of sensing elements; and a controller configured to receive signals from one or more of the plurality of sensing elements, derive a spatial location and boundary of the target area based on locations of the sensing elements that sensed the signal, and determine that one or more of the plurality of stimulation elements that are surrounded by the respective sets of the sensing elements whose sensing elements sensed the signal lie in the target area and should provide the therapeutic electrical stimulation that covers the spatial location and the boundary of the target area, and control delivery of the therapeutic electrical stimulation via the determined stimulation elements.