PROBLEM TO BE SOLVED: To provide an oxygen inhaling apparatus which achieves an increase in a degree of accuracy when the inhalation of oxygen is performed by respiration tuning.SOLUTION: The oxygen inhaling apparatus is equipped with an oxygen flow rate setting means 8 for setting an oxygen supply, a container 111 in which oxygen is accumulated, a pressure adjusting device 112 for keeping the oxygen supplied from the container by being connected to the container under a constant supply pressure, an oxygen concentration sensor 114 for detecting the concentration of oxygen by being connected to the downstream side of the pressure adjusting device, a proportional opening valve 115 connected to the downstream side of the oxygen concentration sensor, an oxygen flow rate sensor 116 for detecting the oxygen flow rate by being connected to the downstream side of the proportional opening valve, a demand valve 117 which includes a pressure sensor for detecting an inspiration/expiration state by being connected to the downstream side of the oxygen flow sensor, and an oxygen inhaling device 14 for enabling the inhalation of oxygen by having pipes arranged on the downstream side of the demand valve including the pressure sensor, and performs the inhalation of oxygen by respiration tuning by driving to open through varying a degree of the opening of the proportional opening valve in a manner to be proportional to the oxygen supply set by the oxygen flow rate setting means when the inspiration state is detected.COPYRIGHT: (C)2008,JPO&INPIT【課題】 呼吸同調により酸素吸入を行うときに、精度アップを実現可能にした酸素吸入装置の提供。【解決手段】 酸素供給量を設定する酸素流量設定手段8と、酸素を溜めた容器111と、容器に接続されることで容器から供給される酸素を一定供給圧に維持する圧力調整器112と、圧力調整器の下流側に接続されることで酸素濃度の検出を行う酸素濃度センサ114と、酸素濃度センサの下流側に接続される比例開度弁115と、比例開度弁の下流側に接続されることで酸素流量の検出を行う酸素流量センサ116と、酸素流量センサの下流側に接続されることで吸気呼気状態を検出する圧力センサを含むデマンド弁117と、圧力センサを含むデマンド弁の下流側に配管されることで酸素吸入を行う酸素吸入具14とを備え、吸気状態が検出されると比例開度弁を酸素流量設定手段で設定された酸素供給量に比例してその開度を変化させて開駆動させ呼吸同調で酸素吸入を行う。【選択図】 図7
