LASER ABLATION DEVICE
Local excessive laser radiation is prevented, and uniform laser radiation is performed in a target treatment region. Provided is a laser ablation device including: a light source that emits laser light for cauterizing an affected area; a fiber that is provided in an insertion portion and that guides the laser light emitted from the light source to radiate the laser light from an insertion-portion distal end; and a first drive unit that is provided on the fiber and that vibrates the fiber with a first period.
1 . A laser ablation device comprising:
a light source that emits laser light for cauterizing an affected area;
a fiber that is provided in an insertion portion and that guides the laser light emitted from the light source to radiate the laser light from an insertion-portion distal end; and
a first drive unit that is provided on the fiber and that vibrates the fiber with a first period.
2 . A laser ablation device according to claim 1 , further comprising a second drive unit that vibrates the fiber with a second period.
3 . A laser ablation device according to claim 2 , wherein the amplitude produced by the second drive unit is larger than the amplitude produced by the first drive unit.
4 . A laser ablation device according to claim 2 ,
wherein the first drive unit is provided closer to a distal end of the fiber than the second drive unit; and
the second period is longer than the first period.
5 . A laser ablation device according to one of claim 2 ,
wherein the first drive unit is provided closer to a distal end of the fiber than the second drive unit; and
the second period is a period n times (n is an integer) the first period.
6 . A laser ablation device according to one of claim 2 ,
wherein the fiber is made to perform rotational motions by the first drive unit and the second drive unit; and
the number of rotations of the fiber due to the first drive unit is faster than the number of rotations of the fiber due to the second drive unit.
7 . A laser ablation device according to one of claim 1 , wherein the fiber is made to perform a resonant motion.
8 . A laser ablation device according to one of claim 1 , wherein the fiber is made to perform raster scanning.
9 . A laser ablation device according to one of claim 1 , wherein the fiber is made to perform spiral scanning.
10 . A laser ablation device according to one of claim 1 , further comprising one or more drive units that vibrate the fiber periodically.