Patent ID: 11964105
Assignee: INOGEN, INC.
Field: Chemical engineering (Chemistry)
Classification: CPC A  B  C | IPC A  B  C

Claim 7:
8. A system, comprising:
a respiratory ventilation device; and
an oxygen concentrator that includes:
at least one sieve bed configured to provide oxygen-enriched gas;
a product tank arranged downstream of the at least one sieve bed and configured to receive the oxygen-enriched gas from the at least one sieve bed;
an outlet port configured to be connected to the respiratory ventilation device;
a product gas accumulator tank arranged downstream of the product tank and at the outlet port;
a tank pressure measurement device configured to measure pressure of the oxygen-enriched gas in the product tank;
a flow measurement device arranged between the product tank and the product gas accumulator tank, the flow measurement device configured to measure flow of oxygen-enriched product gas;
a pressure regulator arranged between the product tank and the product gas accumulator tank, the pressure regulator configured to regulate a pressure of the oxygen-enriched gas flowing from the product tank at a product tank pressure down to a target delivery pressure; and
a controller configured to receive one or more pressure measurements from the tank pressure measurement device and one or more flow measurements from the flow measurement device;
wherein the oxygen concentrator is configured such that, when the outlet port is connected to the respiratory ventilation device, the product gas accumulator tank stores a quantity of oxygen-enriched gas received from the product tank between each of a plurality of patient inspiratory efforts and supplies the stored oxygen-enriched gas at a consistent flow rate to the outlet port during each of the plurality of patient inspiratory efforts.