Isolation and communication element for a resposable pulse oximetry sensor
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United States of America Patent
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Sep 27, 2005
Grant Date -
Jul 17, 2003
app pub date -
Jan 24, 2003
filing date -
Dec 9, 1999
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A sensor has a connector adapted to electrically communicate with a physiological measurement instrument. A breakable conductor incorporated by the sensor transitions from a continuity state to a discontinuity state as the result of sensor wear. An isolation and communications element (ICE) has an instrument port and an electrically isolated loop port. The instrument port is in communications with the connector and the loop port is in communications with the breakable conductor. The ICE generates a control output responsive to the discontinuity state to render the sensor inoperable.
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