PROBLEM TO BE SOLVED: To improve the adaptability to technique in an airway adaptor.SOLUTION: A nasal expiration collection part which is connected to the nostril of a living body and collects the exhalation of the nasal cavity； a ventilation path part which forms a ventilation path where the exhalation collected in the nasal expiration collection part passes through； and a gas sensor installation part which can be attached with a gas sensor which is attached to the ventilation path part and measures the density of the gas composition contained in the exhalation are included, and the nasal expiration collection part offers a distribution state enabling the exhalation to circulate and a closed state blocking the circulation of the exhalation.SELECTED DRAWING: Figure 4COPYRIGHT: (C)2020,JPO&INPIT【課題】エアウェイアダプタにおいて手技への適応性を向上する。【解決手段】生体の鼻孔に接続され鼻腔の呼気を収集する鼻呼気収集部と、鼻呼気収集部により収集された呼気が通過する通気路を形成する通気路部と、通気路部に設けられ、呼気に含まれる所定のガス成分の濃度を測定するガスセンサを装着可能なガスセンサ装着部と、を備え、鼻呼気収集部は、呼気が流通可能な流通状態と呼気の流通を阻害する閉塞状態とを呈する。【選択図】図４
