Patents by Inventor Randy Ziegenbein

Randy Ziegenbein 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 and apparatus for creating a color blood flow image based upon ultrasonic echo signals received by an intravascular ultrasound imaging probe
    Patent number: 5921931
    Abstract: A blood flow detection and imaging method and system is described for displaying images in accordance with signals transmitted from an intravascular ultrasound transducer probe. The image processor includes means for independently designating persistence factors for smoothing calculated speed and power of the dynamic portion of a field of view within a vasculature. Furthermore, the designation of a particular image point within a field of view as a dynamic image point (such as a blood flow region) as opposed to a static image point (such as a tissue region) is determined by averaging signal values for image points proximate to an image point of interest over both time and space.
    Type: Grant
    Filed: April 8, 1997
    Date of Patent: July 13, 1999
    Assignee: EndoSonics Corporation
    Inventors: Matthew O'Donnell, Michael J. Eberle, Douglas N. Stephens, Gerald Litzza, Randy Ziegenbein, David Bleam, Ching-Chen Wu