Oxygen concentrator systems and methods

• US 9,440,180 B2
• Filed: 06/09/2015
• Issued: 09/13/2016
• Est. Priority Date: 10/12/2012
• Status: Active Grant

• Current Assignee: Inova Labs Incorporated (ResMed Incorporated)
• Original Assignee: Inova Labs Incorporated (ResMed Incorporated)
• Inventors: Wilkinson, William R., Nebrigic, Dragan
• Primary Examiner(s): Jones, Christopher P
• Application Number:
  US14/734,211
• Publication Number:
  US 20150335849A1
• Time in Patent Office: 462 Days
• US Class Current: 1/1
• CPC Class Codes: A61M 16/0672 Nasal cannula assemblies for oxygen therapy
• CPC Class Codes: A61M 16/101 using an oxygen concentrator
• CPC Class Codes: A61M 16/1055 bacterial
• CPC Class Codes: A61M 16/107 in the inspiratory path
• CPC Class Codes: A61M 2016/0021 with a proportional output signal, e.g. from a thermistor
• CPC Class Codes: A61M 2016/0027 pressure meter
• CPC Class Codes: A61M 2016/0033 electrical
• CPC Class Codes: A61M 2016/1025 the O2 concentration
• CPC Class Codes: A61M 2230/42 Rate
• CPC Class Codes: B01D 2253/108 Zeolites
• CPC Class Codes: B01D 2256/12 Oxygen
• CPC Class Codes: B01D 2257/102 Nitrogen
• CPC Class Codes: B01D 2257/80 Water
• CPC Class Codes: B01D 2257/91 Bacteria; Microorganisms
• CPC Class Codes: B01D 2258/06 Polluted air
• CPC Class Codes: B01D 2259/40009 using sensors or gas analysers
• CPC Class Codes: B01D 2259/40098 with other heating means
• CPC Class Codes: B01D 2259/402 using two beds
• CPC Class Codes: B01D 2259/4533 for medical purposes
• CPC Class Codes: B01D 2259/4541 for portable use, e.g. gas masks
• CPC Class Codes: B01D 2259/80 : Employing electric, magnetic, electromagnetic or wave energy, or particle radiation
• CPC Class Codes: B01D 53/0407 : Constructional details of adsorbing systems
• CPC Class Codes: B01D 53/0438 : Cooling or heating systems
• CPC Class Codes: B01D 53/0446 : Means for feeding or distributing gases
• CPC Class Codes: B01D 53/047 : Pressure swing adsorption

Abstract

Described herein are various embodiments of an oxygen concentrator system. In some embodiments, oxygen concentrator system includes one or more components that improve energy usage during operation of the oxygen concentrator system.

Claims

1. A method of providing oxygen enriched gas to a user of an oxygen concentrator, the oxygen concentrator comprising:

at least two canisters;

gas separation adsorbent disposed in at least two canisters, wherein the gas separation adsorbent separates at least some nitrogen from air in the canister to produce oxygen enriched gas; and

a compression system comprising at least one compressor coupled to at least one canister;

the method comprising;

producing oxygen enriched gas by pressuring air with the at least two canisters using the compression system;

providing the oxygen enriched gas to the user of the oxygen concentrator;

automatically assessing an operating state of the oxygen concentrator;

automatically assessing a pressure of at least one of the canisters of the oxygen concentrator when the oxygen concentrator is in an off state;

operating the compressor at a compressor speed sufficient to pressurize the at least one canister to a predetermined pressure based on the assessed pressure of the oxygen concentrator when the oxygen concentrator is in an off state.

2. The method of claim 1, wherein providing the oxygen enriched gas to the user comprises providing one or more pulses of the oxygen enriched gas to the user.

3. The method of claim 2, further comprising adjusting the frequency and/or duration of the pulses of the oxygen enriched gas.

4. The method of claim 1, wherein providing the oxygen enriched gas to the user comprises providing two or more pulses of the oxygen enriched gas to the user during each breathing cycle.

5. The method of claim 1, wherein the oxygen concentrator comprises:

a first canister containing gas separation adsorbent;

a second canister containing gas separation adsorbent; and

one or more conduits coupling the first canister to the second canister;

wherein the first canister, the second canister, and one or more conduits are integrated into a molded housing.

6. The method of claim 1, wherein the oxygen concentrator further comprises an accumulation chamber coupled to one or more of the canisters, wherein the method further comprises directing the oxygen enriched gas produced in one or more of the canisters into the accumulation chamber.

7. The method of claim 6, wherein the oxygen concentrator further comprises an oxygen sensor coupled to the accumulation chamber, wherein the oxygen sensor is capable of detecting oxygen in a gas during use;

wherein the method further comprises;

assessing a relative concentration of oxygen in the accumulation chamber using the oxygen sensor.

8. The method of claim 1, further comprising:

assessing an inhalation profile of the user;

determining if the inhalation profile is an inhalation profile of the user in an active state or a sedentary state;

implementing a first mode providing oxygen enriched gas to the user if the inhalation profile indicates the user is in an active state; and

implementing a second mode providing oxygen enriched gas to the user if the inhalation profile indicates the user is in a sedentary state.

9. The method of claim 1, wherein the apparatus further comprises:

a first canister containing gas separation adsorbent;

a second canister containing gas separation adsorbent; and

one or more conduits coupling the first canister to the second canister;

wherein the method further comprises;

venting nitrogen gas from the second canister;

diverting at least a portion of oxygen enriched gas produced in the first canister through the second canister during the venting of the second canister;

venting nitrogen gas from the first canister;

diverting at least a portion of oxygen enriched gas produced in the second canister through the first canister during the venting of the second canister.

10. The method of claim 1, wherein the oxygen concentrator has a weight of less than about 5 lbs.

11. An oxygen concentrator apparatus comprising:

at least two canisters;

gas separation adsorbent disposed in at least two canisters, wherein the gas separation adsorbent separates at least some nitrogen from air in the canister to produce oxygen enriched gas; and

a compression system comprising at least one compressor coupled to at least one canister;

a processor operable to execute program instructions, and wherein the program instructions are operable to perform the method comprising;

automatically assessing an operating state of the oxygen concentrator;

automatically assessing a pressure of at least one of the canisters of the oxygen concentrator when the oxygen concentrator is in an off state;

operating the compressor at a compressor speed sufficient to pressurize the at least one canister to a predetermined pressure based on the assessed pressure of the oxygen concentrator when the oxygen concentrator is in an off state.

12. The apparatus of claim 11, wherein the program instructions are further operable to provide the oxygen enriched gas to a user as two or more pulses of the oxygen enriched gas during each breathing cycle.

13. The apparatus of claim 11, wherein program instructions are further operable to implement adjusting the frequency and/or duration of the provided oxygen enriched gas to the user based on the breathing rate and a prescription requirement of the user.

14. The apparatus of claim 11, comprising:

a first canister containing gas separation adsorbent;

a second canister containing gas separation adsorbent; and

one or more conduits coupling the first canister to the second canister;

wherein the first canister, the second canister, and one or more conduits are integrated into a molded housing.

15. The apparatus of claim 11, further comprising an accumulation chamber coupled to one or more of the canisters, wherein the instructions are further operable for directing the oxygen enriched gas produced in one or more of the canisters into the accumulation chamber.

16. The apparatus of claim 11, further comprising:

a first canister containing gas separation adsorbent;

a second canister containing gas separation adsorbent; and

one or more conduits coupling the first canister to the second canister;

wherein one or more of the conduits couple the first canister to the second canister such that at least part of oxygen enriched gas from the first canister is diverted through the second canister during at least part of a venting process of the second canister; and

wherein one or more of the conduits couple the first canister to the second canister such that at least part of oxygen enriched gas from the second canister is diverted through the first canister during at least part of a venting process of the first canister.

17. The apparatus of claim 11, wherein the oxygen concentrator apparatus has a weight of less than about 5 lbs.