Method and systems for the delivery of oxygen enriched gas

• US 9,440,036 B2
• Filed: 10/14/2013
• Issued: 09/13/2016
• Est. Priority Date: 10/12/2012
• Status: Active Grant

• Current Assignee: Inova Labs Incorporated (ResMed Incorporated)
• Original Assignee: Inovalabs LLC
• Inventors: Wilkinson, William R., Nebrigic, Dragan
• Primary Examiner(s): Flick, Jason
• Assistant Examiner(s): Leszczak, Victoria
• Application Number:
  US14/053,016
• Publication Number:
  US 20140137859A1
• Time in Patent Office: 1,065 Days
• Field of Search: 128/202.26, 128/205.11, 128/204.21, 128/204.22, 128/204.23
• US Class Current: 1/1
• CPC Class Codes: A61B 5/0816 Measuring devices for examining respiratory frequency measuring frequency of electric signals G01R23/00
• CPC Class Codes: A61B 5/082 Evaluation by breath analysis, e.g. determination of the chemical composition of exhaled breath A61B5/083, A61B5/091 take precedence
• CPC Class Codes: A61B 5/4839 combined with drug delivery
• CPC Class Codes: A61M 16/0051 with alarm devices
• CPC Class Codes: A61M 16/0063 Compressors
• CPC Class Codes: A61M 16/024 including calculation means, e.g. using a processor
• CPC Class Codes: A61M 16/0666 Nasal cannulas or tubing devices for improving normal breathing through the nose A61F5/08; nose filters A62B23/06; outside holding devices A61M25/02
• CPC Class Codes: A61M 16/0816 Joints or connectors
• 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 16/12 by mixing different gases
• CPC Class Codes: A61M 16/202 electrically actuated
• CPC Class Codes: A61M 16/208 Non-controlled one-way valves, e.g. exhalation, check, pop-off non-rebreathing valves
• CPC Class Codes: A61M 2016/0027 pressure meter
• CPC Class Codes: A61M 2016/0039 in the inspiratory circuit
• CPC Class Codes: A61M 2016/1025 the O2 concentration
• CPC Class Codes: A61M 2202/0208 Oxygen
• CPC Class Codes: A61M 2205/3331 Pressure; Flow
• CPC Class Codes: A61M 2205/581 by audible feedback
• CPC Class Codes: A61M 2205/583 : by visual feedback
• CPC Class Codes: A61M 2230/42 : Rate
• CPC Class Codes: B01D 2256/12 : Oxygen
• CPC Class Codes: B01D 2257/102 : Nitrogen
• CPC Class Codes: B01D 2259/4533 : for medical purposes
• CPC Class Codes: B01D 53/047 : Pressure swing adsorption

Abstract

Described herein are various embodiments of an oxygen concentrator system and method of delivering oxygen enriched gas to a user. In some embodiments, oxygen concentrator system includes one or more components that improve the efficiency of oxygen enriched gas delivery during operation of the oxygen concentrator system.

Claims

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

measuring the time between a plurality of successive breaths, wherein a breath is determined to begin when a drop in pressure is measured using a pressure sensor coupled to an outlet of a conduit coupling the user to an oxygen enriched gas source;

determining an average breathing rate based on the time between each breath of the plurality of successive breaths, wherein the time between a penultimate breath and a last breath of the plurality of successive breaths is not used to determine the average breathing rate; and

setting an inspiration breath pressure threshold for the pressure sensor based on the determined average breathing rate.

2. The method of claim 1 wherein adjusting the inspiration breath pressure threshold based on the average breathing rate comprises lowering the inspiration breath pressure threshold when the determined average breathing rate changes from greater than 10 breaths per minute to less than 10 breaths per minute.

3. The method of claim 1, wherein adjusting the inspiration breath pressure threshold based on the average breathing rate comprises increasing the inspiration breath pressure threshold when the determined average breathing rate changes from less than 15 breaths per minute to greater than 15 breaths per minute.

4. The method of claim 1, wherein adjusting the inspiration breath pressure threshold based on the average breathing rate comprises maintaining the inspiration breath pressure threshold at a current setting when the average breathing rate is between about 10 breaths per minute and about 15 breaths per minute.

5. The method of claim 1, wherein the method comprises measuring the time between at least six successive breaths.

6. The method of claim 1, further comprising switching to an active mode, a sedentary mode, or remaining at the current mode based on the average breathing rate.

7. The method of claim 1, further comprising switching the oxygen concentrator to an active mode, when the average breathing rate comprises at least 15 breaths per minute.

8. The method of claim 1, further comprising switching the oxygen concentrator to a sedentary mode, when the average breathing rate comprises less than 10 breaths per minute.

9. The method of claim 1, wherein adjusting the inspiration breath pressure threshold based on the average breathing rate is performed automatically.

10. The method of claim 1, wherein the oxygen enriched gas source is an oxygen concentrator system.

11. The method of claim 1, wherein the oxygen enriched gas source is an oxygen tank.

12. An oxygen concentrator apparatus, comprising:

a pressure sensor, the pressure sensor configured to detect a breath pressure of a user; and

a processor operable coupled to the pressure sensor, the processor to execute non-transitory program instructions, and wherein the program instructions are operable to;

automatically measure the time between a plurality of successive breaths, wherein a breath is determined to begin when a drop in pressure is measured using the pressure sensor;

determine an average breathing rate based on the time between each breath of the plurality of successive breaths, wherein the time between a penultimate breath and a last breath of the plurality of successive breaths is not used to determine the average breathing rate; and

set an inspiration breath pressure threshold for the pressure sensor based on the determined average breathing rate.

13. The oxygen concentrator apparatus of claim 12, wherein the program instructions are further operable to implement lowering the inspiration breath pressure threshold of the pressure sensor if the determined average breathing rate changes from greater than about 10 breaths per minute to less than about 10 breaths per minute.

14. The oxygen concentrator apparatus of claim 12, wherein the program instructions are further operable to implement increasing the inspiration breath pressure threshold if the determined average breathing rate changes from less than about 15 breaths per minute to greater than about 15 breaths per minute.

15. The oxygen concentrator apparatus of claim 12, wherein the inspiration breath pressure threshold of the pressure sensor is maintained at a current setting if the determined average breathing rate is between about 10 breaths per minute and 15 breaths per minute.

16. The oxygen concentrator apparatus of claim 12, wherein the program instructions are further operable to produce an alarm or other signal in response to an average breathing rate of less than 5 breaths per min.

17. The oxygen concentrator apparatus of claim 12, wherein operating the oxygen concentrator based on the average breathing rate comprises switching to an active mode when the breathing rate is at least 15 breaths per min.

18. The oxygen concentrator apparatus of claim 12, wherein operating the oxygen concentrator based on the average breathing rate comprises switching to a sedentary mode when the breathing rate is less than 10 breaths per min.

19. The oxygen concentrator apparatus of claim 12, further comprising an oxygen sensor coupled to the processor, wherein the oxygen sensor is capable of detecting oxygen in a gas during use.

20. The oxygen concentrator apparatus of claim 12, wherein the oxygen concentrator weighs less than 5 lbs.