PROBLEM TO BE SOLVED: To provide a probe for pulse photometry capable of preventing heat generated from a light emitting element from being transmitted to a part of a biological tissue of a patient in a concentrated manner.SOLUTION: A probe 1 for pulse photometry includes a holding member 2 having a contact surface 24 that contacts a patient's finger F, a light emitting part 3 disposed in the holding member 2, a light receiving part 4 disposed in the holding member 2, which is configured so as to receive a light emitted from the light emitting part 3, and a spacer 5 provided between the contact surface 24 and the light emitting part 3, which has an opening 51. An air layer 6 regulated by the opening 51 is provided between a light emitting surface 33 of the light emitting part 3 and the contact surface 24.SELECTED DRAWING: Figure 1【課題】発光素子から発生する熱が患者の生体組織の一部に集中して伝わることを防止可能なパルスフォトメトリ用プローブを提供する。【解決手段】パルスフォトメトリ用プローブ１は、患者の手指Ｆと接触する接触面２４を有する保持部材２と、保持部材２内に配置された発光部３と、保持部材２内に配置されると共に、発光部３から出射された光を受光するように構成された受光部４と、接触面２４と発光部３との間に設けられ、開口部５１を有するスペーサ５とを備える。発光部３の発光面３３と接触面２４との間には、開口部５１によって規定された空気層６が設けられている。【選択図】図１
