Directional brain stimulation and recording leads
First Claim
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1. An implantable brain stimulation lead comprising:
- a substantially cylindrical lead body having a proximal end, a distal end, and a plurality of substantially ring-like electrodes each having an arc or circumference extending substantially around the lead body; and
an electrically insulating member that extending over at least body to cover at least covered portions of the circumference of the electrodes, and defining a plurality of windows that expose exposed portions of the circumference of the electrode, thereby increasing directionality of stimulation current delivered by the electrode, wherein the insulating member is formed as a sleeve-like member that extends over a portion of the lead body;
wherein at least two windows are defined at different axial and circumferential positions about the lead body.
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Abstract
A directional brain stimulation lead assembly provides a lead body and an insulating member defining one or more windows that selectively expose portions of electrodes carried by the lead body to produce a directional stimulation current field. The lead assembly can achieve more effective localization of electrical stimulation to very small brain targets, and thereby reduce the incidence of material side effects caused by collateral stimulation of brain tissue adjoining a desired brain target. In addition, the directional lead can sense brain activity on a more localized basis.
260 Citations
14 Claims
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1. An implantable brain stimulation lead comprising:
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a substantially cylindrical lead body having a proximal end, a distal end, and a plurality of substantially ring-like electrodes each having an arc or circumference extending substantially around the lead body; and
an electrically insulating member that extending over at least body to cover at least covered portions of the circumference of the electrodes, and defining a plurality of windows that expose exposed portions of the circumference of the electrode, thereby increasing directionality of stimulation current delivered by the electrode, wherein the insulating member is formed as a sleeve-like member that extends over a portion of the lead body;
wherein at least two windows are defined at different axial and circumferential positions about the lead body. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification