CPC A61N 5/0616 (2013.01) [A61B 2018/20357 (2017.05); A61N 5/067 (2021.08); A61N 2005/0631 (2013.01); A61N 2005/073 (2013.01)] | 15 Claims |
1. A laser treatment apparatus that is configured to irradiate a laser beam to an affected area to treat the affected area, the laser treatment apparatus comprising:
a beam source device that is configured to output a laser beam;
a polarization varying device that includes a crystal element configured to change a polarization direction of the laser beam output by the beam source device;
a scanning device that is configured to scan a therapeutic range including the affected area with the laser beam by irradiating the laser beam to the therapeutic range, wherein the scanning device has a transmission medium that changes an output direction of a laser beam according to an applied voltage, and the transmission medium includes a first transmission medium that is configured to change an output direction of a laser beam polarized in a first direction by the polarization varying device according to an applied voltage;
a polarizer that is provided upstream of the first transmission medium in a path of the laser beam and is configured to transmit a laser beam having a polarization component that is either the same or orthogonal to that of the laser beam passing through the first transmission medium; and
a controller that controls the polarization varying device to adjust the polarization direction of the laser beam output from the polarization varying device based on a polarization direction of the polarizer.
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