Patents by Inventor Doug Meyer, Jr.

Doug Meyer, Jr. 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).

  • Pressure-based system and method for determining cardiac stroke volume
    Patent number: 7785263
    Abstract: Cardiac stroke volume (SV) of a subject is estimated as a function of a value derived from a measured arterial pressure waveform. The value may be the standard deviation, or a function of the difference between maximum and minimum pressure values, or a function of either the maximum value of the first time derivative or the absolute value of the minimum of the first time derivative of the pressure waveform, or both, or a function of the magnitude of one or more spectral components of the pressure waveform at a frequency corresponding to the heart rate. Cardiac output is then estimated as the product of the subject's heart rate and SV, scaled by a calibration constant. Arterial pressure may be measured invasively or non-invasively.
    Type: Grant
    Filed: March 9, 2007
    Date of Patent: August 31, 2010
    Assignee: Edwards Lifesciences Corporation
    Inventors: Luchy Roteliuk, Russell McKown, Doug Meyer, Jr.
  • Pressure-based system and method for determining cardiac stroke volume
    Patent number: 7220230
    Abstract: Cardiac stroke volume (SV) of a subject is estimated as a function of a value derived from a measured arterial pressure waveform. The value may be the standard deviation, or a function of the difference between maximum and minimum pressure values, or a function of either the maximum value of the first time derivative or the absolute value of the minimum of the first time derivative of the pressure waveform, or both, or a function of the magnitude of one or more spectral components of the pressure waveform at a frequency corresponding to the heart rate. Cardiac output is then estimated as the product of the subject's heart rate and SV, scaled by a calibration constant. Arterial pressure may be measured invasively or non-invasively.
    Type: Grant
    Filed: December 5, 2003
    Date of Patent: May 22, 2007
    Assignee: Edwards Lifesciences Corporation
    Inventors: Luchy Roteliuk, Russell McKown, Doug Meyer, Jr.