PROBLEM TO BE SOLVED: To conduct laser treatment while observing a heat coagulation state of a treatment region in real time and clearly, and radiate therapeutic laser light to the treatment region only, using a small-diameter probe.SOLUTION: A laser treatment device 1 includes: a light guiding member 22 disposed in a probe 2 a light source part 3 for supplying at least illumination laser light L1 to the light guiding member 22 a scanning mechanism 4 for performing two-dimensional scanning with the illumination laser light L1 emitted from the leading end of the light guiding member 22 a scanned image construction part 5 for constructing an image of a region to be observed from return light of the illumination laser light L1 a treatment region setting par 6 for setting a region of the image to a treatment region a determination part 7 for determining propriety of supplying treatment laser light L2 based on the position of the region to be observed in the image after the treatment region has been set and a control part 7 for causing the treatment laser light L2 to be supplied from the light source part 3 to the light guiding member 22 so that the treatment laser light L2 is scanned only in the treatment region when the supply of the treatment light L2 is permitted.COPYRIGHT: (C)2014,JPO&INPIT【課題】プローブを細径の構成とし、治療領域の熱凝固状態をリアルタイムでかつ明確に観察しながらレーザ治療を行い、治療領域のみに治療レーザ光を照射する。【解決手段】プローブ2内に配置された導光部材22と、少なくとも照明レーザ光L1を導光部材2に供給する光源部3と、導光部材22の先端から出射される照明レーザ光L1を2次元走査させる走査機構4と、照明レーザ光L1の戻り光から観察対象部位の画像を構築する走査画像構築部5と、画像の一部の領域を治療領域に設定する治療領域設定部6と、治療領域設定後の画像内の観察対象部位の位置に基づいて治療レーザ光L2の供給の可否を判断する判断部7と、治療レーザ光L2の供給が許可された場合に治療領域のみで治療レーザ光L2が走査されるように光源部3から導光部材22へ治療レーザ光L2を供給させる制御部7とを備えるレーザ治療装置1を提供する。【選択図】図1
