Patents by Inventor Karen Vance

Karen Vance 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).

  • Lithotriptor device for trapping and destroying concretions
    Patent number: 4927427
    Abstract: A device is provided for removal of kidney stones. The device includes a stone trapping device on the end of a flexible and axially movable wire. The wire moves through a tubing. An electrode is provided in the form of a cylinder at the outer end of the tubing. The stone is drawn into close proximity to the electrode, and electrical sparks jump between the wire and the electrode to generate a shock wave in close proximity to the stone. Stones which are small as they occur or which are reduced in size by shock wave treatment then may be withdrawn from the body in the stone trapping device.
    Type: Grant
    Filed: September 29, 1989
    Date of Patent: May 22, 1990
    Assignee: Northgate Research, Inc.
    Inventors: G. Vincent Kriauciunas, Karen Vance