Respiratory breathing apparatus

Patent metadata

Field	Value
Publication number	US-9849258-B2
Application number	US-201214009819-A
Country	US
Kind code	B2
Filing date	Apr 5, 2012
Priority date	Apr 5, 2011
Publication date	Dec 26, 2017
Grant date	Dec 26, 2017

Abstract

A respiratory apparatus comprising a base and removable chamber, wherein the chamber is configured to hold a supply of water and include a blower arrangement adapted to provide a supply of pressurized air or gas to the supply of water. In certain embodiments the respiratory apparatus includes a split motor, wherein the stationary components are located within a base and the rotating portions are located within a chamber.

First claim

What is claimed is:

1. A respiratory apparatus for delivery of a pressurized breathable gas to a patient's airways for respiratory treatment, the respiratory apparatus comprising:
a chamber including an air inlet and an air outlet;
a base configured to receive the chamber thereon; and
a motor configured to provide a supply of pressurized air to the air outlet, the motor having (a) a stationary portion comprising a stator having a plurality of wound coils, and (b) a rotating portion comprising an impeller having a plurality of rotor magnets;
wherein the stationary portion of the motor is located in the base and the rotating portion of the motor is located in the chamber, wherein the chamber separates the rotating portion from the base, wherein the plurality of rotor magnets and the stator are configured in a stacked arrangement such that the plurality of rotor magnets are positioned over the plurality of wound coils in use, and
wherein the air outlet is adapted to be coupled to a patient conduit for delivery of the pressurized breathable gas to the patient's airways.

2. The respiratory apparatus of claim 1 , wherein, in use, the impeller is magnetically driven to rotate by the stationary portion in the base.

3. The respiratory apparatus of claim 2 , wherein the impeller is constructed of a magnetized polymer.

4. The respiratory apparatus of claim 2 , wherein the rotating portion forms part of a blower within the chamber.

5. The respiratory apparatus of claim 4 , wherein the blower comprises an inlet flow path configured to direct air from the air inlet to the impeller.

6. The respiratory apparatus of claim 4 , wherein the blower comprises a volute configured to direct the supply of pressurized air from the impeller towards one or more blower outlets.

7. The respiratory apparatus of claim 1 , wherein the stationary portion includes the stator having a plurality of wound coils aligned horizontally in the base.

8. The respiratory apparatus of claim 1 , wherein the chamber is further configured to hold a supply of water to humidify the supply of pressurized air or gas prior to exiting through the air outlet.

9. The respiratory apparatus of claim 8 , wherein the supply of water is heated by a heater element.

10. The respiratory apparatus of claim 9 , wherein the heater element is located in the base.

11. The respiratory apparatus of claim 9 , wherein the heater element is located in the chamber.

12. The respiratory apparatus of claim 1 , wherein for operation, the stationary portion and the rotating portion are separated by a housing wall of the base.

13. The respiratory apparatus of claim 12 , wherein the rotating portion and the stationary portion are further separated by a wall of the chamber.

14. The respiratory apparatus of claim 1 , wherein the chamber has a container configuration including a bottom wall and side wall.

15. The respiratory apparatus of claim 1 , wherein the chamber comprises a spiral flow pathway.

16. The respiratory apparatus of claim 15 , wherein a blower partition is configured to expel pressurized air at a bottom wall of the chamber and into the spiral flow pathway and the spiral flow pathway is configured to deliver the pressurized air to the air outlet proximate the top of the chamber.

17. The respiratory apparatus of claim 1 , wherein an inlet pathway comprises a muffler.

18. The respiratory apparatus of claim 1 , wherein an outlet pathway of the respiratory apparatus comprises a muffler.

19. The respiratory apparatus of claim 1 , wherein the plurality of wound coils are field coils for influencing the operation of the rotating portion, and wherein each field coil includes a vibration absorber.

20. The respiratory apparatus of claim 1 , wherein the rotating portion of the motor and the stationary portion of the motor are configured in the stacked arrangement to create a direction of magnetic flux between the rotor magnets and the stator for operation, wherein the direction of the magnetic flux is parallel to an axis of rotation of the impeller.

Assignees

• Klasek Paul Jan
• Holley Liam
• Yang Quangang
• Farrugia Steven Paul
• Fu Timothy Tsun-Fai
• Frater Robert Henry
• Resmed Ltd

Inventors

• Klasek Paul Jan
• Holley Liam
• Yang Quangang
• Farrugia Steven Paul
• Fu Timothy Tsun-Fai
• Frater Robert Henry

Classifications

• A61M16/0069

  the speed thereof being controlled by respiratory parameters, e.g. by inhalation · CPC title

• A61M2205/3317

  Electromagnetic, inductive or dielectric measuring means · CPC title

• A61M2205/3368

  Temperature · CPC title

• A61M16/1055

  bacterial · CPC title

• A61M2016/0027

  pressure meter · CPC title