| 摘要 |
PROBLEM TO BE SOLVED: To provide an oxygen concentrating device capable of effectively extending the duration of feeding of a gas for respiration. SOLUTION: The oxygen concentrating device 1 has a main control part 14 for automatically selecting a battery 13 as a driving power source and a synchronous mode in which the gas for respiration is fed only for the period of inspiration of a patient if the output voltage in a regular range from the battery 13 mounted on the oxygen concentrating device 1 is detected but connection of another external power source such as a commercial power source is not detected. COPYRIGHT: (C)2005,JPO&NCIPI
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