Respiratory assistance apparatus

Patent metadata

Field	Value
Publication number	US-12186482-B2
Application number	US-202318326806-A
Country	US
Kind code	B2
Filing date	Oct 24, 2023
Priority date	Aug 23, 2012
Publication date	Jan 7, 2025
Grant date	Jan 7, 2025

Abstract

A respiratory assistance apparatus includes a conduit connecting a flow generator and an outlet. The conduit includes a venture formation. The apparatus further includes an oxygen inlet in fluid communication or selective fluid communication with an oxygen outlet. The oxygen outlet is directed into the conduit and toward a mouth of the venture formation. The flow generator provides a flow path for air to enter the conduit when the flow generator is not operating.

First claim

The invention claimed is:

1. A high flow oxygen respiratory apparatus comprising:
a flow generator;
a first oxygen inlet in fluid communication or selective fluid communication with an oxygen supply; and
an integrated humidifier comprising a chamber, the chamber comprising an inlet and an outlet;
wherein the flow generator is configured to operate in a first mode and a second mode;
wherein, in the first mode, the flow generator and the integrated humidifier are powered by a mains power connection;
wherein, in the second mode:
the apparatus is disconnected from the mains power connection,
a portable power source is configured to generate alerts or alarms, and
the flow generator is not operational.

2. The apparatus of claim 1 , wherein the apparatus further comprises an adjustable flow controller in a flow path between the oxygen supply and the first oxygen inlet.

3. The apparatus of claim 2 , wherein the adjustable flow controller is manually adjustable.

4. The apparatus of claim 2 , wherein the adjustable flow controller is electronically adjustable.

5. The apparatus of claim 1 , wherein the apparatus further comprises a controller configured to communicate with and/or control the integrated humidifier.

6. The apparatus of claim 5 , wherein the communication and/or control between the controller and the integrated humidifier is by wireless protocol between the integrated humidifier and the controller.

7. The apparatus of claim 5 , wherein the communication and or control between the controller and the integrated humidifier is by wired connection between the integrated humidifier and the controller.

8. The apparatus of claim 5 , wherein the controller is configured to control a heat input to the integrated humidifier from a heater.

9. The apparatus of claim 5 , wherein the controller is configured to be in communication with one or more sensors.

10. The apparatus of claim 9 , wherein the one or more sensors include: one or more pressure sensors; one or more flow rate sensors; one or more temperature sensors; and/or one or more oxygen concentration sensors.

11. The apparatus of claim 9 , wherein the apparatus further comprises a display unit configured to show measurements from the one or more sensors.

12. The apparatus of claim 1 , wherein the second mode is activated when there is a fault in a pump and/or a loss of mains power.

13. The apparatus of claim 1 , further comprising a second oxygen inlet, wherein in the second mode, oxygen flowing through the second oxygen inlet is configured to increase a concentration of oxygen in a flow supplied to a user.

14. The apparatus of claim 1 , wherein the chamber outlet is connectable to a patient interface via a conduit.

15. The apparatus of claim 14 , wherein the conduit comprises a heating component.

16. The apparatus of claim 15 , wherein the heating component is a heater wire disposed within a gas path of the conduit.

17. The apparatus of claim 16 , wherein the heater wire is powered in the second mode.

18. The apparatus of claim 11 , wherein the portable power source is configured to enable the one or more sensors and/or the display unit to function in the second mode.

19. The apparatus of claim 8 , wherein the heater is configured to generate lower humidity at the outlet in the second mode compared with the first mode.

Assignees

• Fisher & Paykel Healthcare Ltd

Inventors

• Smith Malcolm David

Classifications

• A61M2205/82

  Internal energy supply devices · CPC title

• A61M2205/3553

  remote, e.g. between patient's home and doctor's office · CPC title

• A61M2205/3334

  Measuring or controlling the flow rate · CPC title

• A61M2202/0208

  Oxygen · CPC title

• A61M16/0666

  Nasal cannulas or tubing (devices for improving normal breathing through the nose A61F5/08; nose filters A62B23/06; outside holding devices A61M25/02) · CPC title