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System and method for characterizing circulatory blood flow

  • US 10,512,408 B2
  • Filed: 08/19/2015
  • Issued: 12/24/2019
  • Est. Priority Date: 07/08/2010
  • Status: Active Grant
First Claim
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1. A method for characterizing a circulatory blood flow of a human body, the method comprising:

  • receiving, by a computing device, a time domain biological signal emulating an arterial pulse wave from a sensor associated with the human body of a patient;

    performing frequency analysis of the time domain biological signal to determine at least one of a fundamental frequency and an integer harmonic of a heart rate from the time domain biological signal wherein each of the fundamental frequency and integer harmonic is characterized by a frequency amplitude;

    calculating, by the computing device, at least one normalized parameter including calculating a percent difference of at least one of the frequency amplitudes of the at least one of a fundamental frequency and an integer harmonic from the at least one pre-determined parameter baseline;

    comparing, by the computing device, the at least one normalized parameter to a predetermined threshold value;

    characterizing the circulatory blood flow from the comparison of the at least one normalized parameter to the predetermined threshold value; and

    providing an indication reflective of the circulatory blood flow and the changes in circulatory blood volume over contiguous time intervals to a person monitoring the patient'"'"'s human body for the management of the cardiovascular function of the patient.

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