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ELECTRONIC SPHYGMOMANOMETER

  • US 20120226170A1
  • Filed: 05/11/2012
  • Published: 09/06/2012
  • Est. Priority Date: 11/13/2009
  • Status: Active Grant
First Claim
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1. An electronic sphygmomanometer comprising:

  • a cuff that is worn on a measurement area;

    an inflation and deflation unit that adjusts a pressure applied to the cuff;

    a plurality of pressure sensors connected to the cuff;

    a plurality of oscillation circuits, provided in correspondence to the respective plurality of pressure sensors, that output a square wave signal of a frequency based on pressures;

    an oscillation circuit adjustment circuit, provided in common for the plurality of oscillation circuits, that allows the output from one of the plurality of oscillation circuits to pass; and

    a control circuit that accepts an input of the square wave signal from the oscillation circuit adjustment circuit and calculates a blood pressure from the frequency of the square wave signal.

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