| abstract |
(57) [Summary] [PROBLEMS] To detect when a user does not inhale oxygen even though an oxygen concentrator operates normally and issue an abnormal alarm to notify a patient or the like. An oxygen concentrator is provided. SOLUTION: There is provided a detecting means for detecting the supply of oxygen from the oxygen supplying means and a respiratory phase detecting means for detecting a respiratory phase of the user, and the respiratory phase is supplied even though oxygen is supplied from the oxygen supplying means. An oxygen concentrator for medical use, comprising alarm means for issuing an alarm when no is detected. |