PROBLEM TO BE SOLVED: To rapidly coagulate blood having flowed out from a biological tissue.SOLUTION: A surface of blood having flowed out from a biological tissue is irradiated with light emitted from a light-emitting diode (LED) with a wavelength of 380-515 nm in a blue-violet spectral band.SELECTED DRAWING: NoneCOPYRIGHT: (C)2016,JPO&INPIT【課題】生体組織から流出した血液を速やかに凝固させること。【解決手段】発光ダイオード(LED)から発せられる、波長が380~515nmの青紫のスペクトル帯域の光を生体組織から流出した血液表面へ照射すること。【選択図】なし