Medical lead coil conductor with spacer element
First Claim
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1. A medical electrical lead, comprising:
- a lead body having a proximal section and a distal section;
an electrode coupled to the distal section of the lead body;
at least one helically coiled electrical conductor disposed within an interior lumen of the lead body and electrically coupled to the electrode, the at least one helically coiled electrical conductor including a plurality of turns disposed about a longitudinal axis of the lead body and extending from the proximal section to the distal section of the lead body;
at least one helically coiled spacer element electrically isolated from the electrode, the at least one helically coiled spacer element including a plurality of turns interstitially disposed between adjacent turns of the at least one helically coiled electrical conductor to form a coil assembly comprising the at least one helically coiled electrical conductor and the at least one helically coiled spacer element; and
wherein the at least one helically coiled electrical conductor and the at least one helically coiled spacer element are wound together to have a first portion of the coil assembly that is close-wound and a second portion of the coil assembly that is open-wound.
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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
20 Claims
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1. A medical electrical lead, comprising:
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a lead body having a proximal section and a distal section; an electrode coupled to the distal section of the lead body; at least one helically coiled electrical conductor disposed within an interior lumen of the lead body and electrically coupled to the electrode, the at least one helically coiled electrical conductor including a plurality of turns disposed about a longitudinal axis of the lead body and extending from the proximal section to the distal section of the lead body; at least one helically coiled spacer element electrically isolated from the electrode, the at least one helically coiled spacer element including a plurality of turns interstitially disposed between adjacent turns of the at least one helically coiled electrical conductor to form a coil assembly comprising the at least one helically coiled electrical conductor and the at least one helically coiled spacer element; and wherein the at least one helically coiled electrical conductor and the at least one helically coiled spacer element are wound together to have a first portion of the coil assembly that is close-wound and a second portion of the coil assembly that is open-wound. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A medical electrical lead, comprising:
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a lead body having a proximal section and a distal section; an electrode coupled to the distal section of the lead body; a helically coiled electrical conductor disposed within an interior lumen of the lead body and electrically coupled to the electrode, the electrical conductor including a plurality of turns disposed about a longitudinal axis of the lead body and extending from the proximal section to the distal section of the lead body; a helically coiled spacer element electrically isolated from the electrode, the spacer element including a proximal end, a distal end, and a plurality of turns interstitially disposed between adjacent turns of the electrical conductor, the proximal end of the spacer element located within the distal section of the lead body and extending to a distal lead tip of the lead to form a coil assembly comprising the electrical conductor and the spacer element; and wherein the electrical conductor and the spacer element are wound together to have a first portion of the coil assembly that is close-wound and a second portion of the coil assembly that is open-wound.
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16. A medical electrical lead, comprising:
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a lead body having a proximal section and a distal section; an electrode coupled to the distal section of the lead body; a helically coiled electrical conductor disposed within an interior lumen of the lead body and electrically coupled to the electrode, the conductor wire having a transverse shape and including a plurality of wire turns disposed about a longitudinal axis of the lead body; a helically coiled spacer element electrically isolated from the electrode and including a plurality of turns interstitially disposed between adjacent turns of the electrical conductor to form a coil assembly comprising the electrical conductor and the spacer element; and wherein the electrical conductor and the spacer element are wound together to have a first portion of the coil assembly and a second portion of the coil assembly, the first portion having different spacing between adjacent turns of the electrical conductor and the spacer element relative to the second portion. - View Dependent Claims (17, 18, 19, 20)
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Specification