Patents by Inventor Hing W. Tang

Hing W. Tang 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).

  • Valve cutter for arterial by-pass surgery
    Patent number: 5152771
    Abstract: A valve cutter for arterial bypass surgery is provided and includes a blade assembly for cutting the venous valves, a shaft for guiding the blade assembly through the bypass vein, an expansion means for preventing the blade assembly from contacting the walls of the bypass vein and for helping to propagate the incisions made in the valve leaflets by the blade assembly, and a control means for controlling the expansion and contraction of the expansion means in order to allow for use of the invention in a variety of bypass vein diameter sizes.
    Type: Grant
    Filed: December 31, 1990
    Date of Patent: October 6, 1992
    Assignees: The Board of Supervisors of Louisiana State University, Agricultural and Mechanical College
    Inventors: Mehdy Sabbaghian, Russell S. Dailey, Gregory T. Dobson, Hing W. Tang, Glen J. Schwartzberg