Patents by Inventor Makoto R. Arai

Makoto R. Arai has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Apparatus for monitoring cardiovascular regulation using heart rate power spectral analysis
    Patent number: 4832038
    Abstract: Apparatus for heart rate fluctuation power spectrum analysis obtains an electrocardiogram signal from an electrocardiograph machine and a respiratory rate signal from an electroplethysmograph machine. These signals are processed by a data acquisition system to provide output suitable for heart rate fluctuation power spectrum analysis by a mini-micro-computer.Data manipulation includes correction of artifacts by substituting an appropriate heartbeat interval for detected heartbeat intervals for which the variance exceeds a preselected range of slewing rates. Trending of data and overlapping data analysis increase the analytical capabilities of the apparatus.Methods of treatment for conditions manifested by abnormalities in a heart rate fluctuation power spectrum involve applying treatments when spectral abnormalities are observed. Specific abnormalities indicating the need for treatment include: a level below about 0.1 (beats/min.).sup.
    Type: Grant
    Filed: January 20, 1987
    Date of Patent: May 23, 1989
    Assignee: The Board of Trustees of University of Illinois
    Inventors: Makoto R. Arai, David Gordon, Laura E. McAlpine