Light irradiating medical device

A light irradiating medical device comprising:

• a shaft having a first end and a second end in a longitudinal axis direction thereof and having a lumen extending in the longitudinal axis direction from a proximal side toward a distal side;
• a first tubular member disposed in the lumen of the shaft and rotatable about a rotation axis parallel to the longitudinal axis direction of the shaft, the first tubular member having a window on the first tubular member located in a part of a peripheral wall of a distal portion;
• and
• a light guiding tool disposed in a lumen of the first tubular member and movable in the longitudinal axis direction, the light guiding tool including an optical fiber extending in the longitudinal axis direction,
• the optical fiber including
• a core,
• a cladding coating a radially outer portion of the core, and
• a cladding-absent portion located at a part of a distal portion of the core, and
• the first tubular member and the light guiding tool being configured so that a light emitted from the optical fiber is allowed to pass through the window,
• wherein
• the light guiding tool includes a second tubular member covering the optical fiber wherein the second tubular member has a light-transmitting property,
• the second tubular member extends in the longitudinal axis direction and is disposed in the lumen of the first tubular member so that the second tubular member longitudinally covers an entirety of the optical fiber in the longitudinal axis direction, and
• the cladding-absent portion is a portion which has a length in a longitudinal direction of the optical fiber and in which the core is exposed.