PROBLEM TO BE SOLVED: To semi-quantize the degree of analgesia.SOLUTION: Changes in scaled volume pulse waves are made observable in an analgesic index display device comprising: electrically stimulating means for passing a current through a skin surface volume pulse wave detection means for applying near infrared light onto the skin surface and measuring the transmitted light or reflected light of the applied near infrared light to detect a volume pulse wave scaled volume pulse wave derivation means for deriving a scaled volume pulse wave by dividing the AC component of the volume pulse wave detected by the volume pulse wave detection means by the DC component of the volume pulse wave and display means for displaying the value of the scaled volume pulse wave.COPYRIGHT: (C)2014,JPO&INPIT【課題】鎮痛の程度を半定量化する。【解決手段】皮膚表面に通電する電気刺激付与手段と、皮膚表面に近赤外線光を照射し、その透過光または反射光を測定することで容積脈波を検出する容積脈波検出手段と、前記容積脈波検出手段によって検出された容積脈波の交流成分を該容積脈波の直流成分で除算した基準化容積脈波を導出する基準化容積脈波導出手段と、前記基準化容積脈波の値を表示する表示手段とを備え、前記通電による前記基準化容積脈波の変化を観測可能にしたことを特徴とする。【選択図】図1
