Patents by Inventor Randall O. Wallingford

Randall O. Wallingford 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).

  • Medical devices with cutting elements
    Patent number: 8052703
    Abstract: Medical devices having one or more cutting elements are disclosed. In some embodiments, a medical device includes an elongated catheter configured to be inserted into a body, and a cutting element carried by the catheter. The cutting element has an alloy including from about 12% to about 16% by weight of chromium, from about 0.5% to about 5% by weight of molybdenum, and iron. The alloy has a martensitic phase.
    Type: Grant
    Filed: June 29, 2005
    Date of Patent: November 8, 2011
    Assignee: Boston Scientific Scimed, Inc.
    Inventors: Timothy R. St. Martin, Randall O. Wallingford
  • Method and device for improved two-phase flow through a lumen
    Publication number: 20020136694
    Abstract: The addition of surfactant additives to facilitate efficient laminar flow through the lumens of certain medical devices, including catheters. The surfactant can be added to an injection medium, or otherwise located within the catheter itself.
    Type: Application
    Filed: December 11, 2001
    Publication date: September 26, 2002
    Inventors: Randal O. Wallingford, Jack A. Brown, Harm TenHoff, Craig Coombs