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System and method for mitigating interference in pulse oximetry

  • US 8,660,626 B2
  • Filed: 02/04/2011
  • Issued: 02/25/2014
  • Est. Priority Date: 09/28/2006
  • Status: Expired due to Fees
First Claim
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1. A pulse oximetry system comprising:

  • a sensor comprising;

    a sensor body;

    an emitter disposed on the sensor body;

    a detector disposed on the sensor body; and

    one or more position indicators that generate a change in voltage or resistance in response to changes in position of the emitter and the detector; and

    a monitor comprising;

    a processor configured to;

    receive a signal from the detector and a signal from the one or more position indicators;

    determine a corrected path length based on the signal from the one or more position indicators; and

    determine a physiological parameter based at least in part upon the signal from the detector and the corrected path length.

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