US 12,434,032 B2
Oxygen gas concentrator with outlet accumulator
Todd Allum, Livermore, CA (US)
Assigned to Inogen, Inc., Goleta, CA (US)
Filed by INOGEN, INC., Goleta, CA (US)
Filed on Mar. 14, 2024, as Appl. No. 18/605,641.
Application 18/605,641 is a division of application No. 17/063,708, filed on Oct. 5, 2020, granted, now 11,964,105.
Application 17/063,708 is a continuation of application No. 15/706,616, filed on Sep. 15, 2017, granted, now 10,792,453, issued on Oct. 6, 2020.
Application 15/706,616 is a continuation of application No. 15/603,380, filed on May 23, 2017, abandoned.
Claims priority of provisional application 62/341,021, filed on May 24, 2016.
Prior Publication US 2024/0216636 A1, Jul. 4, 2024
Int. Cl. B01D 53/02 (2006.01); A61M 16/06 (2006.01); A61M 16/10 (2006.01); A61M 39/24 (2006.01); B01D 53/053 (2006.01); C01B 13/02 (2006.01); A61M 16/00 (2006.01); A61M 16/20 (2006.01)
CPC A61M 16/101 (2014.02) [A61M 16/0672 (2014.02); A61M 16/106 (2014.02); A61M 39/24 (2013.01); B01D 53/053 (2013.01); C01B 13/0259 (2013.01); A61M 16/00 (2013.01); A61M 2016/0027 (2013.01); A61M 2016/003 (2013.01); A61M 16/0057 (2013.01); A61M 2016/1025 (2013.01); A61M 16/107 (2014.02); A61M 16/201 (2014.02); A61M 16/208 (2013.01); A61M 2205/3331 (2013.01); A61M 2205/3334 (2013.01); A61M 2205/50 (2013.01); B01D 2221/10 (2013.01); B01D 2253/108 (2013.01); B01D 2256/12 (2013.01); B01D 2257/102 (2013.01); B01D 2258/06 (2013.01); B01D 2259/402 (2013.01); B01D 2259/4533 (2013.01); B01D 2259/4541 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A method of providing oxygen therapy to a patient, the method comprising:
delivering oxygen-enriched gas from at least one sieve bed of an oxygen concentrator to a product tank of the oxygen concentrator;
regulating, with a pressure regulator of the oxygen concentrator arranged downstream of the product tank, pressure of the oxygen-enriched gas from a product tank pressure to a target delivery pressure;
delivering said oxygen-enriched gas at said target delivery pressure to an accumulator tank of the oxygen concentrator, said accumulator tank arranged downstream of both of the product tank and the pressure regulator of the oxygen concentrator;
delivering said oxygen-enriched gas at said target delivery pressure from said accumulator tank to an outlet port of the oxygen concentrator; and
storing, with the accumulator tank, a quantity of the oxygen-enriched gas received from the product tank between each of a plurality of patient inspiratory efforts and supplying the stored oxygen-enriched gas to the outlet port during the plurality of patient inspiratory efforts.