Patents by Inventor Frederick S. Halverson

Frederick S. Halverson 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).

  • Flexible tubular device for use in medical applications
    Patent number: 5573520
    Abstract: An apparatus for use as a catheter, a guidewire, a catheter sheath for use with catheter introducers or a drug infusion catheter/guidewire. The apparatus includes a flexible tubular member with an encasing covering the tubular member that creates a fluid-tight seal around the periphery of the tubular member. The tubular member is self-supporting and includes a plurality of apertures therein in a predetermined configuration to increase the flexibility of the tubular member.
    Type: Grant
    Filed: October 26, 1994
    Date of Patent: November 12, 1996
    Assignee: Mayo Foundation for Medical Education and Research
    Inventors: Robert S. Schwartz, David R. Holmes, Frederick S. Halverson, James V. Donadio, III, David Berry
  • Flexible catheter guidewire
    Patent number: 5437288
    Abstract: An apparatus for use as a catheter guidewire and a method for making a catheter guidewire. The apparatus comprises an elongate non-coiled wire having a proximal portion, a distal tip and a flexible portion located between the proximal portion and the distal tip having axially spaced grooves cut therein. The method for making the guidewire includes burnishing one end of a wire to create a rounded distal tip and cutting a predetermined pattern of axially spaced grooves in a length of wire adjacent to the distal tip to create a flexible portion.
    Type: Grant
    Filed: September 4, 1992
    Date of Patent: August 1, 1995
    Assignee: Mayo Foundation for Medical Education and Research
    Inventors: Robert S. Schwartz, David Berry, Frederick S. Halverson, James V. Donadio, III