Medical lead coil conductor with spacer element
First Claim
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1. A medical electrical lead, comprising:
- an insulated lead body including at least one electrode;
a plurality of conductor coils extending helically along a length of the lead body, each conductor coil including;
at least one helically coiled conductor electrically coupled to the at least one electrode, the at least one conductor including a plurality of turns disposed about a longitudinal axis of the lead body;
at least one helically coiled spacer element electrically isolated from the at least one electrode, the at least one spacer element including a plurality of turns disposed about the longitudinal axis, wherein one or more turns of the spacer element are interstitially disposed between at least one adjacent turn of the conductor;
wherein the at least one helically coiled spacer element comprises a non-symmetric extrusion disposed over the at least one helically coiled conductor; and
wherein the at least one helically coiled conductor and the at least one helically coiled spacer element form a close-wound coil assembly extending along a length of the lead body.
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Abstract
Medical electrical leads equipped with spacer elements and configured for use during medical procedures such as magnetic resonance imaging (MRI) are disclosed. An illustrative medical electrical lead includes a proximal connector, an insulated lead body including at least one electrode, a helically coiled conductor wire, and a helically coiled spacer element interstitially disposed between adjacent turns of the conductor wire.
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Citations
14 Claims
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1. A medical electrical lead, comprising:
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an insulated lead body including at least one electrode; a plurality of conductor coils extending helically along a length of the lead body, each conductor coil including; at least one helically coiled conductor electrically coupled to the at least one electrode, the at least one conductor including a plurality of turns disposed about a longitudinal axis of the lead body; at least one helically coiled spacer element electrically isolated from the at least one electrode, the at least one spacer element including a plurality of turns disposed about the longitudinal axis, wherein one or more turns of the spacer element are interstitially disposed between at least one adjacent turn of the conductor; wherein the at least one helically coiled spacer element comprises a non-symmetric extrusion disposed over the at least one helically coiled conductor; and wherein the at least one helically coiled conductor and the at least one helically coiled spacer element form a close-wound coil assembly extending along a length of the lead body. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A medical electrical lead, comprising:
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a proximal connector configured to couple the lead to an implantable medical device; an insulated lead body extending distally from the proximal connector and including at least one electrode; a plurality of conductor coils extending helically along a length of the lead body, each conductor coil including; a single helically coiled conductor wire electrically coupled to the at least one electrode, the conductor wire including a plurality of turns disposed about a longitudinal axis of the lead body; at least one helically coiled non-conductive spacer element electrically isolated from the at least one electrode, the at least one spacer element including a plurality of turns disposed about the longitudinal axis, wherein one or more wire turns of the spacer element are interstitially disposed between adjacent turns of the conductor wire; wherein the at least one helically coiled non-conductive spacer element comprises a non-symmetric extrusion disposed over the at least one helically coiled conductor; and wherein the helically coiled conductor wire and the at least one helically coiled non-conductive spacer element form a close-wound coil assembly extending along a length of the lead body.
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14. A medical electrical lead, comprising:
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a proximal connector configured to couple the lead to an implantable medical device; an insulated lead body extending distally from the proximal connector and including a plurality of electrodes; a pair of helically coiled conductor wires electrically coupled to the electrodes, each conductor wire including a plurality of turns disposed about a longitudinal axis of the lead body; at least one helically coiled non-conductive spacer element electrically isolated from the electrodes, the at least one spacer element including a plurality of turns disposed about the longitudinal axis, wherein one or more turns of the spacer element are interstitially disposed between adjacent turns of the conductor wires; wherein the at least one helically coiled non-conductive spacer element comprises a non-symmetric extrusion disposed over the at least one helically coiled conductor wire; and wherein the pair of helically coiled conductor wires and the at least one helically coiled non-conductive spacer element form a close-wound coil assembly extending along a length of the lead body.
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Specification