| 摘要 |
PROBLEM TO BE SOLVED: To provide an oxygen concentration device capable of supplying oxygen to a user while preventing leaking of the oxygen from a humidifier. SOLUTION: In the oxygen concentration device for medical use, a first connection between a conduit for supplying oxygen-concentrated air and the humidifier is provided with a flow passage opening/closing means for closing the outflow of the oxygen-concentrated air to the exit part of the conduit which leads to the humidifier. The concentration device also has a connecting- connecting mechanism for connecting a flow passage by attaching the humidifier and for opening the flow passage opening/closing means.
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