Radiopaque marking of lead electrode zone in a continuous conductor construction
AssigneeMedtronic, Inc.
InventorsElisabeth L. Belden, Mary M. Morris
Life of this patent
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Abstract
A cardiac transvenous defibrillation lead has a continuous coil conductor within a layer of insulation. A portion of the coil conductor is exposed as a defibrillation electrode. In order to enhance fluoroscopic visualization of the exposed electrode during implant, the end of the exposed electrode is marked with a radiopaque element. The element may be in the form of an adhesive filled with radiopaque material that is used to backfill under the layer of insulation. Alternatively, a tube made of radiopaque material may be installed between the layer of insulation and the coil conductor.
Claims6
A transvenous defibrillation lead comprising:
- a continuous coil conductor;
- a layer of insulation over the coil conductor and providing for at least one segment portion of the coil conductor to be exposed as a defibrillation electrode;
- and
- a tube of radiopaque material installed between the insulation layer and the coil conductor at a location adjacent the proximal end of the exposed defibrillation electrode.
Dependencies are inferred from the claim text.