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:
Sep. 17, 1985
Filed:
Jun. 02, 1983
Applicant:
Inventors:
John G Parker, Olney, MD (US);
William D Standbro, Columbia, MD (US);
Assignee:
The Johns Hopkins University, Baltimore, MD (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
A61B / ;
U.S. Cl.
CPC ...
128664 ; 424-9 ;
Abstract
An improved apparatus and method for optically localizing cancer lesions occluded beneath healthy tissue layers. A porphyrin tumor-specific marker is injected into a patient. After several days the healthy tissue has released the tumor-specific marker but the cancerous tissue has retained the tumor-specific marker. A long wavelength red excitation light illuminates an area of tissue and excites the porphyrin tumor-specific marker to fluorescence. An optical detection means monitors fluorescent emissions in the near infrared band and locates the source of the emissions.