Patent ID: 7022118

Claim:
A medical energy irradiation apparatus for generating energy and irradiating tissues of a living body with the generated energy comprising: an inserting portion which is inserted into the living body; an endoscope provided in an interior of said inserting portion and being insertable along a longitudinal direction of said inserting portion; an emitting portion provided in the interior of said inserting portion for irradiating tissues of the living body with the energy; emitting portion moving means for moving said emitting portion along the longitudinal direction of said inserting portion continuously; and emission angle-changing means for changing an emission angle of said emitting portion continuously such that the generated energy irradiates an irradiation target position; wherein said inserting portion has a side-observation window and at least one position mark arranged along the longitudinal direction in an interior of said inserting portion, said side-observation window being arranged at a side portion of said inserting portion and used for observing tissues of the living body by said endoscope and irradiating tissues of the living body with the energy by said emitting portion, said at least one position mark being used for determining the irradiation target position of tissues of the living body to be irradiated with the energy based on a position of tissues of the living body observed through said side-observing window by said endoscope and a position of said at least one position mark observed by said endoscope.