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BODY-WORN SYSTEM FOR CONTINUOUS, NONINVASIVE MEASUREMENT OF CARDIAC OUTPUT, STROKE VOLUME, CARDIAC POWER, AND BLOOD PRESSURE

  • US 20140249431A1
  • Filed: 12/27/2011
  • Published: 09/04/2014
  • Est. Priority Date: 12/28/2010
  • Status: Active Grant
First Claim
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1. A system for simultaneously measuring blood pressure and at least one of stroke volume and cardiac output from a patient, comprising:

  • an impedance sensor connected to at least two electrodes attached to the patient and comprising an impedance circuit, the impedance circuit configured to process signals from the at least two electrodes to measure an impedance signal from the patient;

    an optical sensor connected to an optical probe attached to the patient and comprising an optical circuit, the optical circuit configured to process signals from the optical probe to measure at least one optical signal from the patient;

    an ECG sensor connected to at least two electrodes attached to the patient and comprising an ECG circuit, the ECG circuit configured to process signals from the at least two electrodes to measure an ECG signal from the patient; and

    ,a processing system configured to;

    i) operably connect to the impedance sensor, optical sensor, and the ECG sensor;

    ii) receive the impedance signal from the impedance sensor and process it to determine a first value of at least one of stroke volume and cardiac output;

    iii) receive the optical signal from the optical sensor and process it to determine a second value of at least one of stroke volume and cardiac output;

    iv) receive the ECG signal from the ECG sensor and collectively process it and the optical signal to determine a blood pressure value; and

    v) collectively process both the first and second values of at least one of stroke volume and cardiac output to determine a third value of at least one of stroke volume and cardiac output.

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