×

Congenital heart disease monitor

  • US 9,687,160 B2
  • Filed: 05/31/2013
  • Issued: 06/27/2017
  • Est. Priority Date: 09/20/2006
  • Status: Active Grant
First Claim
Patent Images

1. A congenital heart disease monitor comprising:

  • a display;

    a sensor configured to emit optical radiation having a plurality of wavelengths into a tissue site and to detect the optical radiation after attenuation by pulsatile blood flowing within the tissue site;

    a patient monitor configured to drive the sensor, receive a sensor signal corresponding to the detected optical radiation and to generate at least one of a visual output and an audio output responsive to the sensor signal;

    one or more hardware processors within the patient monitor programmed to derive a physiological parameter measurement comprising oxygen saturation from sensor data responsive to the sensor signal and determine an indication of a congenital heart disease condition for output to the display, the one or more hardware processors further configured to;

    electronically determine a first oxygen saturation from a first channel corresponding to a first measurement site;

    electronically determine a second oxygen saturation from a second channel at a second measurement site;

    electronically determine a difference of oxygen saturation between the first channel and the second channel;

    electronically determine a rate of change of the difference of oxygen saturation over time between the first channel and the second channel; and

    electronically determine a first metric based on a comparison of the first oxygen saturation corresponding to the first channel with a saturation limit threshold;

    electronically determine a second metric based on a comparison of the second oxygen saturation corresponding to the second channel with the saturation limit threshold;

    electronically determine a third metric based on a comparison of the difference of oxygen saturation with a cross channel saturation limit threshold;

    electronically determine a fourth metric based on a comparison of the rate of change of the difference of oxygen saturation over time between the first channel and the second channel with a cross channel saturation trend threshold;

    electronically generate a first indicator based on the following electronic determinations;

    the first metric indicating that the first oxygen saturation is greater than the saturation limit threshold, the second metric indicating that the second oxygen saturation is greater than the saturation limit threshold, the third metric indicating that the difference of oxygen saturation is less than the cross channel saturation limit threshold, and the fourth metric indicating that the comparison of the rate of change of the difference is less than the cross channel saturation threshold; and

    electronically generate a second indicator based on the following electronic determinations;

    the first metric indicating that the first oxygen saturation is greater than the saturation limit threshold or the second metric indicating that the second oxygen saturation is greater than the saturation limit threshold, the first indicator corresponding to a lower risk of congenital heart disease than the second indicator.

View all claims
  • 3 Assignments
Timeline View
Assignment View
    ×
    ×