Patent ID: 6530918
Filing Date: 2003-03-11
Classification: A61B,A61F

Abstract:
A laser treatment apparatus for irradiating an affected part of a patient with a treatment laser beam to treat the affected part, the apparatus including:treatment beam irradiation means for emitting and delivering the treatment laser beam of a first wavelength in a visible region to irradiate the affected part; observation means provided with an observation optical system for observing the affected part; a protective filter disposed in an optical path of the observation optical system, for intercepting the first wavelength; attenuation means for attenuating output power of the treatment laser beam, the treatment laser beam with the attenuated output power being irradiated as a first aiming beam to the affected part; aiming beam irradiation means for emitting and delivering a second aiming beam to irradiate the affected part, the second aiming beam being of a different second wavelength in the visible region from the first wavelength, the second wavelength not being intercepted by the protective filter; and aiming beam switching means for switching between irradiation of the first aiming beam and irradiation of the second aiming beam selectively such that the first aiming beam is irradiated when the treatment beam is not irradiated and the second aiming beam is irradiated when the treatment beam is irradiated.