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US 7,257,449 B2Granted
Extendable/retractable lead having downsized lead body
AssigneeCardiac Pacemakers, Inc.
InventorJeffrey P. Bodner
Life of this patent
Estimating the term…
Abstract
A lead assembly includes a flexible lead body extending from a proximal end to a distal end, and the lead body includes two or more conductors disposed therein. The second conductor is disposed within the first conductor, and the second conductor has a coating of insulation on the second conductor. In another option, a sleeve of insulative material is disposed between the first conductor and the second conductor.
Claims25
A lead assembly comprising:
- a flexible lead body extending from a proximal end to a distal end, the lead body including two or more conductors disposed therein;
- the two or more conductors including a first conductor and a second conductor, the first conductor is co-axial and non co-radial with the second conductor;
- an electrode assembly including at least one extendable and/or retractable electrode electrically coupled with at least one conductor;
- the second conductor disposed within the first conductor, the second conductor including one or more filars having an outer filar surface having an insulative coating disposed directly thereon such that a cross-section of the outer filar surface is surrounded by the insulative coating;
- and
- wherein the first conductor and the second conductor are rotatable relative to one another.
3 more elements
A lead assembly comprising:
- a flexible lead body extending from a proximal end to a distal end, the lead body including two or more conductors disposed therein;
- the two or more conductors including a first conductor and a second conductor;
- an electrode assembly including at least one extendable and/or retractable electrode electrically coupled with at least one conductor;
- a tubular insulative sleeve disposed between the first conductor and the second conductor, the tubular insulative sleeve comprising one or both of polyurethane or polyimide;
- and
- the second conductor disposed within and rotatable relative to the first conductor, a coating of insulation disposed directly on an outer filar surface of one or more filars of the first conductor or the second conductor such that a cross-section of the outer filar surface of the first conductor or the second conductor is surrounded by the insulative coating.
3 more elements
A method comprising:
- providing a second conductor having a coiled configuration having a second outer coil diameter, and the second conductor having a second outer filar diameter,
- disposing insulation directly on the second outer filar diameter such that a cross-section of the outer filar diameter is surrounded by an insulative coating;
- disposing the second coiled conductor within a first coiled conductor to form a conductor assembly, where the first coiled conductor is non co-radial with the second coiled conductor;
- disposing one or both of polyurethane or polyimide tubing between the first conductor and the second conductor;
- disposing the conductor assembly within a flexible lead body;
- coupling an electrode assembly with the first and/or the second conductor, the electrode assembly including at least one electrode;
- and
- extending and/or retracting the at least one electrode from and/or within the flexible lead body.
5 more elements
A method comprising:
- providing a second conductor having a coiled configuration having a second outer coil diameter, and the second conductor having a second outer filar diameter including an insulative coating disposed thereon such that a cross-section of the second outer filar diameter is surrounded by the insulative coating;
- heat shrinking PTFE or ETFE on the second outer coil diameter and over the insulation;
- disposing the second coiled conductor within a first coiled conductor to form a conductor assembly, where the first coiled conductor is non co-radial with the second coiled conductor;
- disposing the conductor assembly within a flexible lead body;
- coupling an electrode assembly with the first and/or the second conductor, the electrode assembly including at least one electrode;
- and
- disposing insulative tubing between the first conductor and the second conductor.
4 more elements
Dependencies are inferred from the claim text.