Systems and leads for improved RF compatibility and methods of manufacture and use
First Claim
1. An implantable electrical stimulation lead comprising:
- a lead body having a distal end, a proximal end, and a longitudinal length;
a plurality of electrodes disposed along the distal end of the lead body;
a plurality of terminals disposed along the proximal end of the lead body;
a plurality of conductors electrically coupling the plurality of electrodes to the plurality of terminals; and
at least one internal conductive structure disposed within the distal end or proximal end of the lead body near at least one of the electrodes or terminals, respectively, wherein the at least one internal conductive structure is not conductively connected to the electrodes, terminals, or conductors, wherein the at least one internal conductive structure comprises a dummy coil disposed within the distal end of the lead body and extending radially under at least a distal-most one of the plurality of electrodes.
1 Assignment
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Accused Products
Abstract
An implantable electrical stimulation lead includes a lead body having a distal end, a proximal end, and a longitudinal length; a plurality of electrodes disposed along the distal end of the lead body; a plurality of terminals disposed along the proximal end of the lead body; and a plurality of conductors electrically coupling the plurality of electrodes to the plurality of terminals. To reduce or redistribute current induced in the conductors during an MRI procedure, an internal conductive structure, such as a dummy coil or hollow metal tube, or non-therapeutic electrodes may be provided. Alternatively or additionally, a multi-layer region of the conductors may extend beneath the electrodes or terminals or the electrodes or terminals may vary in size or surface area.
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Citations
11 Claims
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1. An implantable electrical stimulation lead comprising:
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a lead body having a distal end, a proximal end, and a longitudinal length; a plurality of electrodes disposed along the distal end of the lead body; a plurality of terminals disposed along the proximal end of the lead body; a plurality of conductors electrically coupling the plurality of electrodes to the plurality of terminals; and at least one internal conductive structure disposed within the distal end or proximal end of the lead body near at least one of the electrodes or terminals, respectively, wherein the at least one internal conductive structure is not conductively connected to the electrodes, terminals, or conductors, wherein the at least one internal conductive structure comprises a dummy coil disposed within the distal end of the lead body and extending radially under at least a distal-most one of the plurality of electrodes. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification