An LED device of hemostatic blood vessels of the skin with a heat dissipating means 5 of the LED for LED6 one power supply unit 2 of the LED for, and cooling means 4, the LED for said LED6 least, LED device having a light emission spectral band of violet (390~470nm). The LED device, it is possible to install the means 10 for coupling the optical fiber of the light is focused and the optical focusing system 7,.少なくとも1つのLED6、前記LED用の電力供給ユニット2、前記LED用の冷却手段4、及び前記LED用の熱放散手段5を備える皮膚の血管の止血用のLED装置であって、前記LED6が、青紫色のスペクトル帯域(390~470nm)の光放射を有するLED装置。このLED装置には、光学集束系7、及び集束させた光の光ファイバ結合のための手段10を取り付けることもできる。
