The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 14, 2000
Filed:
Sep. 04, 1996
Applicant:
Inventors:
Bergein F Overholt, Knoxville, TN (US);
Masoud Panjehpour, Knoxville, TN (US);
Mike Stonefield, Vancouver, CA;
Assignees:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61B / ;
U.S. Cl.
CPC ...
607 88 ; 606 15 ;
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.