Light irradiation probe for light irradiation treatment by endoscope

摘要

According to one aspect of the present invention, it is possible to provide a flexible light irradiation probe that uniformly irradiates light from a light scattering irradiation unit at 360 degrees in all directions so that light can be simultaneously irradiated to a plurality of arms scattered in a wide area. The light irradiation probe for light irradiation treatment according to the present invention comprises an optical fiber that extends in the axial direction and propagates light from the light source, the optical fiber includes a light guide portion provided with a thin film clad on a side surface of the flexible core, And a light scattering irradiation unit for scattering the light beam with uniform intensity around the omnidirection with respect to the axial direction of the flexible core.