Patents Assigned to Ansar, Inc.
  • Methods for real-time autonomic nervous system monitoring using total heart rate variability, and notched windowing
    Patent number: 7529579
    Abstract: The present invention is a method and apparatus for non-invasive, real-time monitoring of the autonomic nervous systems. The present invention allows for monitoring of the autonomic nervous system using spectral analysis of both heart rate and respiratory signals. A preferred embodiment uses short-time Fourier transform (STFT) with a novel modified Bartlett windowing scheme in real-time so that the dynamic interactions between the sympathetic and parasympathetic divisions of the autonomic nervous system can be independently monitored. In addition, a preferred embodiment of the present invention uses the same techniques to monitor other biological or physiological data, including continuous blood pressure.
    Type: Grant
    Filed: July 11, 2005
    Date of Patent: May 5, 2009
    Assignee: Ansar, Inc.
    Inventors: Joseph Colombo, Robert G. Welch, Benhur Aysin
  • Method and apparatus for monitoring the autonomic nervous system using non-stationary spectral analysis of heart rate and respiratory activity
    Patent number: 7079888
    Abstract: A method and apparatus for non-invasive, real-time monitoring of the autonomic nervous systems using non-stationary spectral analysis of both heart rate and respiratory signals. Continuous wavelet transformation is used in real-time so that the dynamic interactions between the sympathetic and parasympathetic divisions of the autonomic nervous system can be independently monitored in the frequency domain. The method in accordance with the present invention allows spectral analysis, formerly limited to the study of stationary data, to be applied to time-varying biological data such as heart rate variability and respiratory activity. In addition, the same techniques are used to monitor other biological or physiological data, including blood pressure.
    Type: Grant
    Filed: March 12, 2003
    Date of Patent: July 18, 2006
    Assignee: Ansar, Inc.
    Inventors: Harry Oung, Joseph Colombo
  • Methods for real-time autonomic nervous system monitoring using total heart rate variability, and notched windowing
    Publication number: 20060100534
    Abstract: The present invention is a method and apparatus for non-invasive, real-time monitoring of the autonomic nervous systems. The present invention allows for monitoring of the autonomic nervous system using spectral analysis of both heart rate and respiratory signals. A preferred embodiment uses short-time Fourier transform (STFT) with a novel modified Bartlett windowing scheme in real-time so that the dynamic interactions between the sympathetic and parasympathetic divisions of the autonomic nervous system can be independently monitored. In addition, a preferred embodiment of the present invention uses the same techniques to monitor other biological or physiological data, including continuous blood pressure.
    Type: Application
    Filed: July 11, 2005
    Publication date: May 11, 2006
    Applicant: Ansar, Inc.
    Inventors: Joseph Colombo, Robert Welch, Benhur Aysin