Patents Assigned to Thompson Cancer Survival Center
  • Therapeutic methods and devices for irradiating columnar environments
    Patent number: 6146409
    Abstract: The present invention provides improved methods and devices for delivering light to the surface of a biological column, for example in the treatment of Barrett's esophagus using PDT. The improvement comprises the use of an extended irradiation segment or window. The improved methods of the present invention permits treatment lengths of the biological column to be increased without increasing the incidence of stricture formation.
    Type: Grant
    Filed: September 4, 1996
    Date of Patent: November 14, 2000
    Assignees: Bergein F. Overholt, Thompson Cancer Survival Center, QLT PhotoTherapeuticcs Inc.
    Inventors: Bergein F. Overholt, Masoud Panjehpour, Mike Stonefield