Patents by Inventor James A. Arrowood

James A. Arrowood 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).

  • Methods for monitoring and optimizing central venous pressure and intravascular volume
    Patent number: 7118534
    Abstract: Central Venous Pressure (CVP) is non-invasively determined with accuracy comparable to invasive measurement techniques. To do so, curves are plotted based on non-invasively determined patient information obtained by applying a controllable variable (pressure) to a vein of interest at a non-distal point and taking certain measurements (such as pressure and volume measurements) from the patient. An example of a controllable variable is voltage applied in incremental inflation/deflation of a vascular cuff (1). A curve is plotted based on datapoints (such as a volume increase curve or a volume decline curve). Pertinent, accurate CVP and/or blood volume information is obtained from the slope of the non-invasive-based curve. Accurate CVP information is provided without the risks and disadvantages of invasive measurements.
    Type: Grant
    Filed: September 21, 2001
    Date of Patent: October 10, 2006
    Assignee: Virginia Commonwealth University
    Inventors: Kevin R. Ward, Robert W. Barbee, Rao R. Ivatury, Bruce D. Spiess, James A. Arrowood
  • Methods for monitoring and optimizing central venous pressure and intravascular volume
    Publication number: 20040044290
    Abstract: Central Venous Pressure (CVP) is non-invasively determined with accuracy comparable to invasive measurement techniques. To do so, curves are plotted based on non-invasively determined patient information obtained by applying a controllable variable (pressure) to a vein of interest at a non-distal point and taking certain measurements (such as pressure and volume measurements) from the patient. An example of a controllable variable is voltage applied in incremental inflation/deflation of a vascular cuff (1). A curve is plotted based on datapoints (such as a volume increase curve or a volume decline curve). Pertinent, accurate CVP and/or blood volume information is obtained from the slope of the non-invasive-based curve. Accurate CVP information is provided without the risks and disadvantages of invasive measurements.
    Type: Application
    Filed: March 13, 2003
    Publication date: March 4, 2004
    Inventors: Kevin R Ward, Robert W Barbee, Rao R Ivatury, Bruce D Spiess, James A Arrowood