System and device for reducing signal interference in patient monitoring systems
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United States of America Patent
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Mar 22, 2005
Grant Date -
N/A
app pub date -
Jun 28, 2002
filing date -
Jun 29, 2001
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A system and device for mitigating interference in patient physiological monitoring is provided, particularly in surgical environments. One or more sets of electrodes are placed on a patient's body and connected to corresponding terminals of an input extender. The terminals of the input extender are connected to a set of signal wires encased by a ferrous shielded cable. The ferrous shielded cable connects to a signal processing unit, which includes a differential amplifier and an active drive topology to drive the shield with a common mode signal. The signal processing unit connects to physiological monitoring equipment.
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