NASAL CANNULA

• US 20140318536A1
• Filed: 04/30/2014
• Published: 10/30/2014
• Est. Priority Date: 09/12/2005
• Status: Active Grant

• Current Assignee: ResMed Pty Ltd. (ResMed Incorporated)
• Original Assignee: Mergenet Medical, Inc. (Mergenet Solutions, Inc.)
• Inventors: Landis, Robert M., Lewis, Charles A., Collazo, Louis Javier
• Granted Patent: US 10,675,427 B2
• Time in Patent Office: Days
• US Class Current: 128/203.14
• CPC Class Codes: A61M 16/0003 Accessories therefor, e.g. sensors, vibrators, negative pressure
• 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 16/0672 Nasal cannula assemblies for oxygen therapy
• CPC Class Codes: A61M 16/0677 Gas-saving devices therefor
• CPC Class Codes: A61M 2016/1025 the O2 concentration
• CPC Class Codes: A61M 2205/18 with alarm
• CPC Class Codes: A61M 2205/3331 Pressure; Flow
• CPC Class Codes: A61M 2205/3368 Temperature
• CPC Class Codes: A61M 2205/3379 Masses, volumes, levels of fluids in reservoirs, flow rates
• CPC Class Codes: A61M 2230/005 Parameter used as control input for the apparatus
• CPC Class Codes: A61M 2230/42 Rate
• CPC Class Codes: A61M 2230/432 partial CO2 pressure (P-CO2)

Abstract

A gas delivery conduit adapted for fluidly connecting to a respiratory gases delivery system in a high flow therapy system. In one embodiment, a nasal cannula includes a base portion defining a first therapeutic gas passageway, a nozzle disposed adjacent said base portion and defining a second therapeutic gas passageway, the first therapeutic gas passageway being in gaseous communication with the second therapeutic gas passageway and a conduit configured to facilitate sensing that has an inlet side that is independent of and axially spaced apart from an outlet side of the nozzle. The conduit inlet side can extend beyond the nozzle outlet side of the nasal cannula. Additionally, the nasal cannula has a feature that is adapted to prevent one of the conduit and the nozzle from creating a seal with a user'"'"'s nare and a feature that is adapted to prevent one of the conduit and the nozzle from creating a seal with a user'"'"'s nare.

Claims

1. A system for delivering therapeutic gas to a user, said system comprising:

a nasal cannula that comprises;

a base portion defining a first therapeutic gas passageway,

a nozzle disposed adjacent said base portion and defining a second therapeutic gas passageway, said first therapeutic gas passageway being in gaseous communication with said second therapeutic gas passageway, and

at least one conduit configured to facilitate measuring properties of gas within an upper airway of the user, wherein the conduit has an inlet side that is independent of and axially spaced apart from an outlet side on the nozzle; and

a therapeutic gas delivery control system that is adapted to receive data from said at least one conduit, and to adjust a flow of respiratory gas to said nasal cannula based, at least in part, on said data.

2. The system of claim 1, wherein:

said therapeutic gas delivery control system is further adapted for adjusting a flow of respiratory gas through said first and second passageways based on said data.

3. The system of claim 1, wherein:

said nozzle is a first nozzle;

said at least one conduit comprises a first conduit;

said data is a first set of data; and

said nasal cannula comprises;

a second nozzle disposed adjacent said base portion and defining a third therapeutic gas passageway, said first therapeutic gas passageway being in gaseous communication with said third therapeutic gas passageway, and

a second conduit configured to facilitate measuring properties of gas within the upper airway of the user.

4. The system of claim 3, wherein:

said therapeutic gas delivery control system is adapted for;

receiving a second set of data from said second conduit, and

adjusting said flow of respiratory gas to said nasal cannula, at least in part, based on said second set of data.

5. The system of claim 4, wherein said first set of data is a different type of data than said second set of data.

6. The system of claim 4, wherein said first conduit facilitates sensing a different property of the gas than said second conduit.

7. A nasal cannula comprising:

a base portion defining a first therapeutic gas passageway;

a nozzle disposed adjacent said base portion and defining a second therapeutic gas passageway, said first therapeutic gas passageway being in gaseous communication with said second therapeutic gas passageway; and

a conduit configured to facilitate sensing, wherein the conduit has an inlet side that is independent of and axially spaced apart from an outlet side of the nozzle.

8. The nasal cannula of claim 7, wherein said conduit inlet side extends beyond said nozzle outlet side.

9. The nasal cannula of claim 7, wherein said nasal cannula has a feature that is adapted to prevent one of said conduit and said nozzle from creating a seal with a user'"'"'s nare.

10. The nasal cannula of claim 9, wherein said feature is a recess.

11. The nasal cannula of claim 7, wherein the intersection of the said conduit and said nozzle creates a recess that is adapted to prevent said conduit and said nozzle from creating a seal with a user'"'"'s nare.

12. The nasal cannula of claim 7, wherein said nasal cannula further comprises at least one sensor that is configured for determining the internal environment of the user'"'"'s upper airway for one of continuous positive airway pressure and high flow respiratory support.

13. A nasal cannula comprising:

a base portion defining a first therapeutic gas passageway;

a nozzle disposed adjacent said base portion and defining a second therapeutic gas passageway, said first therapeutic gas passageway being in gaseous communication with said second therapeutic gas passageway; and

a conduit configured to facilitate sensing, wherein the conduit is configured for insertion into a user'"'"'s nare and the nozzle is configured to remain external to the user'"'"'s nare.

14. The nasal cannula of claim 13, wherein said nasal cannula further comprises at least one sensor that is configured for determining an internal environment of the user'"'"'s upper airway to support one of continuous positive airway pressure and high flow respiratory therapy.

15. The nasal cannula of claim 13, wherein the said nasal cannula has a feature that is adapted to prevent said conduit from creating a seal with a user'"'"'s nare.

16. The nasal cannula of claim 15, wherein said feature is a recess.

17. A nasal cannula comprising:

a base portion defining a first therapeutic gas passageway;

a nozzle disposed adjacent said base portion and defining a second therapeutic gas passageway, said first therapeutic gas passageway being in gaseous communication with said second therapeutic gas passageway;

a conduit configured to facilitate sensing; and

an element that is configured to limit the depth that said nasal cannula can be inserted into a user'"'"'s nares.

18. The nasal cannula of claim 17, wherein said element is a stop.

19. The nasal cannula of claim 17, wherein said element is said nozzle.

20. The nasal cannula of claim 17, wherein said nasal cannula further comprises at least one sensor that is configured for determining an internal environment of the user'"'"'s upper airway to support one of continuous positive airway pressure and high flow respiratory therapy.

21. The nasal cannula of claim 17, wherein said nasal cannula has a feature that is adapted to prevent said conduit from creating a seal with a user'"'"'s nare.

22. The nasal cannula of claim 21, wherein said feature is a recess.

23. The nasal cannula of claim 19, wherein said nozzle has a width that is one of approximately equal to and greater than a width of the user'"'"'s nare.