Patents by Inventor Robert G. Stout

Robert G. Stout 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).

  • Method of Assessing Blood Volume Using Photoelectric Plethysmography
    Publication number: 20130172702
    Abstract: A method and system for assessing blood volume within a subject includes generating a cardiovascular waveform representing physiological characteristics of a subject and determining blood volume of the subject by analyzing the cardiovascular waveform. The step of analyzing includes generating a first trace of the per heart-beat maximums of the cardiovascular waveform, which is representative of the systolic pressure upon the cardiovascular signal, generating a second trace of the per heart-beat minimums of the cardiovascular waveform, which is representative of the diastolic pressure upon the cardiovascular signal, and comparing the respective first trace and the second trace to generate an estimate of relative blood volume within the subject. In accordance with an alternate method of analyzing harmonic analysis is applied to the cardiovascular waveform, extracting a frequency signal created by ventilation and applying the extracted frequency signal in determining blood volume of the subject.
    Type: Application
    Filed: July 11, 2012
    Publication date: July 4, 2013
    Applicant: YALE UNIVERSITY
    Inventors: Kirk H. Shelley, David G. Silverman, Adam J. Shelley, Robert G. Stout
  • Method of assessing blood volume using photoelectric plethysmography
    Patent number: 8251912
    Abstract: A method and system for assessing blood volume within a subject includes generating a cardiovascular waveform representing physiological characteristics of a subject and determining blood volume of the subject by analyzing the cardiovascular waveform. The step of analyzing includes generating a first trace of the per heart-beat maximums of the cardiovascular waveform, which is representative of the systolic pressure upon the cardiovascular signal, generating a second trace of the per heart-beat minimums of the cardiovascular waveform, which is representative of the diastolic pressure upon the cardiovascular signal, and comparing the respective first trace and the second trace to generate an estimate of relative blood volume within the subject. In accordance with an alternate method of analyzing harmonic analysis is applied to the cardiovascular waveform, extracting a frequency signal created by ventilation and applying the extracted frequency signal in determining blood volume of the subject.
    Type: Grant
    Filed: January 2, 2004
    Date of Patent: August 28, 2012
    Assignee: Yale University
    Inventors: Kirk H. Shelley, David G. Silverman, Adam J. Shelley, Robert G. Stout
  • Method of Assessing Blood Volume Using Photoelectric Plethysmography
    Publication number: 20100016739
    Abstract: A method and system for assessing blood volume within a subject includes generating a cardiovascular waveform representing physiological characteristics of a subject and determining blood volume of the subject by analyzing the cardiovascular waveform. The step of analyzing includes generating a first trace of the per heart-beat maximums of the cardiovascular waveform, which is representative of the systolic pressure upon the cardiovascular signal, generating a second trace of the per heart-beat minimums of the cardiovascular waveform, which is representative of the diastolic pressure upon the cardiovascular signal, and comparing the respective first trace and the second trace to generate an estimate of relative blood volume within the subject. In accordance with an alternate method of analyzing harmonic analysis is applied to the cardiovascular waveform, extracting a frequency signal created by ventilation and applying the extracted frequency signal in determining blood volume of the subject.
    Type: Application
    Filed: September 28, 2009
    Publication date: January 21, 2010
    Applicant: YALE UNIVERSITY
    Inventors: Kirk H. Shelley, David G. Silverman, Adam J. Shelley, Robert G. Stout
  • Detection and characterization of cholinergic oscillatory control in peripheral microvasculature
    Patent number: 7367941
    Abstract: The present invention is an apparatus and method for assessing the condition of a subject by measuring and characterizing one or more oscillatory activities of the subject. The oscillatory activities are under the control of the autonomic nervous system and characterizing the activities provides information related to the status of the autonomic nervous system.
    Type: Grant
    Filed: May 14, 2003
    Date of Patent: May 6, 2008
    Assignee: Yale University
    Inventors: David G. Silverman, Robert G. Stout
  • Detection and characterization of cholinergic oscillatory control in peripheral microvasculature and other cardiovascular signals
    Publication number: 20030233048
    Abstract: The present invention is an apparatus and method for assessing the condition of a subject by measuring and characterizing one or more oscillatory activities of the subject. The oscillatory activities are under the control of the autonomic nervous system and characterizing the activities provides information related to the status of the autonomic nervous system.
    Type: Application
    Filed: May 14, 2003
    Publication date: December 18, 2003
    Inventors: David G. Silverman, Robert G. Stout