Patent ID: 7763058

Claim:
A method of providing photodynamic therapy to the nasopharyngeal tissue comprising the steps of: determining an area of treatment in the nasopharynx; administering appropriate photosensitizers to the patient; inserting at least one guide tube through the nose, through said nasopharynx, and through the oropharynx of the patient; directing the end of the at least one guide tube out through the mouth of the patient; attaching to said at least one guide tube a positioning base adapted to hold one or more guide tubes in a predetermined position within the nasopharyngeal cavity; introducing said positioning base into said nasopharynx; inserting into said at least one guide tube an optical fiber connected to a light source having a control unit; selecting treatment parameters available in said control unit; applying light from the light source through said optical fiber to activate the photosensitizers in said area of treatment until a predetermined treatment time is reached; and removing from said patient said positioning base, said guide tube, and said optical fiber after treatment.