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Apparatus for monitoring vital signs having fluid bladder beneath padding

  • US 8,444,558 B2
  • Filed: 01/07/2009
  • Issued: 05/21/2013
  • Est. Priority Date: 01/07/2009
  • Status: Active Grant
First Claim
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1. A sleep monitoring system comprising:

  • a mattress sized for use in a bed frame comprising;

    a first padding layer sized to fit to the bed frame; and

    a sensing layer sized smaller than and positioned below the first padding layer, the sensing layer comprising a fluid bladder and a sensor positioned within the fluid bladder and in fluid communication with the fluid bladder, the sensor configured to detect waves propagated within the fluid bladder;

    an inflation mechanism in fluid communication with the fluid; and

    a controller located within the mattress and configured to;

    receive signals from the sensor;

    analyze the signals using pattern recognition to differentiate the signals based on frequency;

    convert analysis results to vital signs of a subject on the mattress; and

    output the vital signs of the subject to a control unit, wherein the fluid bladder defines at least one aperture extending from a first surface of the fluid bladder adjacent the first padding layer to a second surface of the fluid bladder opposite the first surface configured to provide a pass-through for fluids.

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