Patent ID: 7306657
Filing Date: 2007-12-11
Classification: A61M

Abstract:
1. An oxygen concentrating apparatus comprising: an output variable compressor taking in and supplying compressed air, a concentration means for increasing oxygen concentration of air supplied by the compressor to thereby produce an oxygen-concentrated gas, a gas tank for storing the oxygen-concentrated gas produced by the concentration means, a gas outlet for supplying oxygen-concentrated gas stored in the gas tank to an inhaling person, a respiration detection means for distinguishing a respiration stage of the inhaling person, a continuous supply control means for continuously discharging oxygen-concentrated gas from the gas outlet, a synchronous supply control means for supplying oxygen-concentrated gas to the gas outlet, said supply being synchronized with inhalation or timing of inhalations of the inhaling person, and for storing oxygen-concentrated gas in the gas tank when it is not being supplied to the inhaling person, and a continuous/synchronous change-over means for allowing a user to select one of the continuous supply control means and the synchronous supply control means, wherein when synchronous operation is selected, the compressor is operated at a lower output in comparison with continuous operation in the case where the oxygen-concentrated gas supply quantity of the two operations is at the same level.