MRI-safe high impedance lead systems
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United States of America Patent
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Nov 8, 2011
Grant Date -
Jul 2, 2009
app pub date -
Oct 20, 2006
filing date -
Oct 21, 2005
priority date (Note) -
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Abstract
Some embodiments are directed to MRI/RF compatible medical interventional devices. A plurality of spaced apart high impedance circuit segments are configured to have a high impedance at a high range of radiofrequencies and a low impedance at a low range of frequencies The high impedance circuit segments may comprise co-wound coiled inductors and can reduce, block or inhibit RJ-transmission along the lead system (20) during exposure to RF associated with a high-Held magnet MRI systems, while permuting passage of low frequency physiologic signals, treatments and/or stimuli The devices can include at least one electrode.
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