Controlled impedance monitoring lead wires
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United States of America Patent
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Aug 28, 1990
Issued Date -
N/A
app pub date -
Dec 22, 1987
filing date -
Jul 2, 1985
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An electrode assembly, particularly useful in nuclear magnetic resonance apparatus, for sensing a physical characteristic of a live study subject includes an electrode positioned in electrical contact with the subject for sensing the physical characteristic. The electrode assembly further includes a lead wire connected at one of its ends to the electrode and having an impedance selected to protect the study subject from heating. The impedance is also selected to have a low voltage coefficient of resistivity in order to prevent conversion of radio-frequency energy to ECG in-band energy.
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