PROBLEM TO BE SOLVED: To provide an oxygen supply method which can suppress waste consumption of oxygen gas and which allows a patient to effectively inhale the oxygen gas.SOLUTION: An oxygen supply apparatus for use in the oxygen supply method comprises: pressure detection means for detecting negative pressure which is generated in an oxygen gas supply pathway caused by inspiration of a patient a gas supply valve for controlling supply of the oxygen gas from an oxygen gas source to the oxygen gas supply pathway and gas supply control means for controlling opening and closing of the gas supply valve. The gas supply control means causes the gas supply valve to open and supplies the oxygen gas when the gas supply valve is closed when the pressure detection means detects the negative pressure, and stores a period from previous negative pressure detection until the current negative pressure detection as a respiration time, then predicts a next inspiration start time based on the stored respiration time, then opens the gas supply valve earlier by a specific early supply time calculated based on the respiration data with respect to the predicted inspiration start time and starts supply of the oxygen gas.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2017,JPO&INPIT【課題】 酸素ガスの無駄な消費を抑えるとともに、患者が有効に酸素ガスを吸入することができる酸素供給方法を提供する。【解決手段】 患者の吸気によって酸素ガス供給経路内に発生する陰圧を検知する圧力検知手段と、酸素ガス源から酸素ガス供給経路への酸素ガスの供給を制御するガス供給弁と、ガス供給弁を開閉制御するガス供給制御手段とを備え、ガス供給制御手段は、圧力検知手段が陰圧を検知したときに、ガス供給弁が閉状態のときには、ガス供給弁を開弁させて酸素ガスを供給するとともに、前回の陰圧検知から今回の陰圧検知までの時間を呼吸時間として記憶し、記憶した呼吸時間に基づいて次回の吸気開始時間を予測し、予測した吸気開始時間に対して呼吸データに基づいて算出された特定の早期供給時間だけ早くガス供給弁を開いて酸素ガスの供給を開始する。【選択図】 図1
