SYSTEMS AND METHODS FOR MAKING AND USING ELECTRICAL STIMULATION SYSTEMS TO REDUCE RF-INDUCED TISSUE HEATING
First Claim
1. An 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 non-conducting core extending along lead body; and
a plurality of conductors extending along the lead body to electrically couple the plurality of electrodes to the plurality of terminals, wherein the plurality of conductors comprises a first conductor and a second conductor arranged along the core with a non-conducting gap between the first and the second conductors,wherein each of the first and the second conductors comprises an inner conductor portion with a first electrical resistivity and an outer conductor portion having a second electrical resistivity that is at least twice the first electrical resistivity, wherein the outer conductor portion is disposed exclusively radially outward from the inner conductor portion.
1 Assignment
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Accused Products
Abstract
An electrical stimulation lead includes a lead body having a distal end, a proximal end, and a longitudinal length; electrodes disposed along the distal end of the lead body; terminals disposed along the proximal end of the lead body; a non-conducting core extending along lead body; and conductors extending along the lead body to electrically couple the electrodes to the terminals. The conductors include a first conductor and a second conductor arranged along the core with a non-conducting gap between the first and the second conductors. Each of the first and the second conductors includes an inner conductor portion with a first electrical resistivity and an outer conductor portion having a second electrical resistivity that is at least twice the first electrical resistivity. The outer conductor portion is disposed exclusively radially outward from the inner conductor portion.
3 Citations
20 Claims
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1. An 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 non-conducting core extending along lead body; and a plurality of conductors extending along the lead body to electrically couple the plurality of electrodes to the plurality of terminals, wherein the plurality of conductors comprises a first conductor and a second conductor arranged along the core with a non-conducting gap between the first and the second conductors, wherein each of the first and the second conductors comprises an inner conductor portion with a first electrical resistivity and an outer conductor portion having a second electrical resistivity that is at least twice the first electrical resistivity, wherein the outer conductor portion is disposed exclusively radially outward from the inner conductor portion. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. 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 non-conducting core extending along lead body; and a plurality of conductors extending along the lead body to electrically couple the plurality of electrodes to the plurality of terminals, wherein at least one of the conductors comprises a plurality of wide regions and a plurality a narrow regions alternating with the wide regions, wherein each wide region has a maximum width and each narrow region has a minimum width, wherein the maximum width of each wide region is at least three times the minimum width of each narrow region. - View Dependent Claims (9, 10, 11, 12, 13, 14, 20)
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15. A method for constructing an electrical stimulation lead, the method comprising:
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segmenting a conductive tube into a plurality of longitudinally extending conductors with each conductor separated from each adjacent one of the conductors by a non-conducting gap; arranging the plurality of conductors around a non-conductive core; electrically coupling the plurality of conductors to a plurality of electrodes; and electrically coupling the plurality of conductors to a plurality of terminals. - View Dependent Claims (16, 17, 18, 19)
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Specification