Devices, systems and methods to reduce coupling of a shield and a conductor within an implantable medical lead
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United States of America Patent
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Jun 12, 2018
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N/A
app pub date -
Dec 12, 2014
filing date -
Dec 14, 2013
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Abstract
Conductors within an implantable medical lead that carry stimulation signal signals are at least partially embedded within a lead body of the medical lead over at least a portion of the length of the conductors while being surrounded by a radio frequency (RF) shield. A space between the shield and the conductors is filled by the presence of the lead body material such that body fluids that infiltrate the lead over time cannot pool in the space between the shield and the conductors. The dielectric properties of the lead body are retained and the capacitive coupling between the shield and the conductors continues to be inhibited such that current induced on the shield is inhibited from being channeled onto the conductors. Heating at the electrodes of the medical lead is prevented from becoming excessive.
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