Helical electrode arrangements for medical leads
First Claim
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1. An implantable medical lead comprising:
- a lead body having a proximal end for electrical connection to an implantable electrical signal generator and a distal end portion; and
first and second helical electrodes located at the distal end portion of the lead body, the first and second helical electrodes extending 180 degrees to 720 degrees around the lead body,wherein the first and second helical electrodes each have a proximal end, wherein the proximal end of the first helical electrode is radially offset from the proximal end of the second helical electrode.
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Abstract
A medical lead includes a lead body having a proximal end for electrical connection to an implantable electric signal generator and a distal end portion having a plurality of electrodes extending in a helical manner longitudinally along the distal end portion. Adjacent helical electrodes may be offset, for example, 90 degrees or 180 degrees. The helical electrodes may extend less than, greater than, or 360 degrees. The electrode arrangement provides increased surface area, improving the capability of positioning the lead against the nerve as desired.
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Citations
20 Claims
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1. An implantable medical lead comprising:
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a lead body having a proximal end for electrical connection to an implantable electrical signal generator and a distal end portion; and first and second helical electrodes located at the distal end portion of the lead body, the first and second helical electrodes extending 180 degrees to 720 degrees around the lead body, wherein the first and second helical electrodes each have a proximal end, wherein the proximal end of the first helical electrode is radially offset from the proximal end of the second helical electrode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. An implantable medical lead comprising:
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a lead body having a proximal end configured to be operably connected to an implantable electrical signal generator and a distal end portion; and a plurality of helical electrodes located at the distal end portion of the lead body, wherein each helical electrode of the plurality of helical electrodes comprises a distal end nearest the distal end portion of the lead body, and a proximal end portion nearest the proximal end of the lead body, wherein the distal end of at least one helical electrode of the plurality of helical electrodes is radially offset from the distal end of one or more of the other plurality of helical electrodes, and wherein the proximal end of at least one helical electrode of the plurality of helical electrodes is radially offset from the proximal end of one or more of the other plurality of helical electrodes, wherein each of the plurality of helical electrodes is separated from the other of the plurality of helical electrodes by a break having a longitudinal distance along the lead body that is greater than zero. - View Dependent Claims (18)
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19. An implantable medical lead comprising:
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a lead body having a proximal end configured to be operably connected to an implantable electrical signal generator (IESG) and a distal end portion; and first and second helical electrodes located at the distal end portion of the lead body and extending around the lead body, each helical electrode having a distal end and a proximal end, wherein the distal end of the first helical electrode is located further from the IESG than the proximal end of the first helical electrode, and the distal end of the second helical electrode is located further from the IESG than the proximal end of the second helical electrode, further wherein the distal end of the first helical electrode is located further from the IESG than the distal end of the second helical electrode along the lead body; wherein when a circumferential line is drawn around the lead body anywhere between the distal most end of the second helical electrode and the proximal most end of the first helical electrode, the circumferential line intersects both the first and second electrodes; third and fourth helical electrodes located at the distal end portion of the lead body and extending around the lead body each having a distal end and a proximal end, wherein the distal end of the third electrode is located further from the IESG than the proximal end of the third electrode, and the distal end of the fourth helical electrode is located further from the IESG than the proximal end of the fourth helical electrode, the third and fourth helical electrodes extending around the lead body, further wherein the distal end of the third helical electrode is located further from the IESG than the distal end of the fourth helical electrode along the lead body; wherein when a circumferential line is drawn around the lead body anywhere between the distal most end of the fourth helical electrode and the proximal most end of the third helical electrode, the circumferential line intersects both the third and fourth electrodes; and wherein the proximal ends of the first and second helical electrodes are radially offset from the proximal ends of the third and fourth helical electrode, and wherein each of the first, second, third and fourth electrodes extend 180 degrees to 720 degrees around the lead body.
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20. An implantable medical lead comprising:
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a lead body having a proximal end configured to be operably connected to an implantable electrical signal generator (IESG) and a distal end portion; and first and second helical electrodes located at the distal end portion of the lead body and extending around the lead body, each having a distal end and a proximal end, wherein the distal end of the first electrode is located further from the IESG than the proximal end of the first electrode, and the distal end of the second helical electrode is located further from the IESG than the proximal end of the second helical electrode, further wherein the distal end of the first helical electrode is located further from the IESG than the distal end of the second helical electrode along the lead body; wherein when a circumferential line is drawn around the lead body anywhere between the distal most end of the first helical electrode and the proximal most end of the second helical electrode, the circumferential line intersects both the first and second electrodes; third and fourth helical electrodes located at the distal end portion of the lead body and extending around the lead body, wherein the distal end of the third electrode is located further from the IESG than the proximal end of the third electrode, and the distal end of the fourth helical electrode is located further from the IESG than the proximal end of the fourth helical electrode, wherein the distal end of the third helical electrode is located further from the IESG than the distal end of the fourth helical electrode along the lead body; wherein when a circumferential line is drawn around the lead body anywhere between the distal most end of the third helical electrode and the proximal most end of the fourth helical electrode, the circumferential line intersects both the third and fourth electrodes; and wherein the proximal ends of the first and second helical electrodes are radially offset from each other, and wherein each of the first, second, third and fourth electrodes extend 180 degrees to 720 degrees around the lead body.
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Specification