Patents by Inventor William A. Appling

William A. Appling 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).

  • Self-centering catheter
    Patent number: 5163928
    Abstract: An elongated tubular catheter adapted for use in an artery or vein is provided. The catheter has a central axis, a proximal end and a distal end. The catheter has a distal portion including a curved portion and an end portion. The end portion has a first opening. The curved portion defines a zone substantially encircling the central axis and has openings facing the axis. The catheter terminates in the end portion. The end portion extends from the curved portion to a position substantially along the axis facing proximally. In use the curved portion centers the catheter and causes the end portion first opening and all other openings to be spaced from the wall of the artery or vein.
    Type: Grant
    Filed: April 29, 1992
    Date of Patent: November 17, 1992
    Assignee: Franklin Electronic Publishers, Incorporated
    Inventors: Eamonn Hobbs, William A. Appling, Irvin F. Hawkins