Compact oronasal patient interface

• US 9,220,860 B2
• Filed: 02/05/2010
• Issued: 12/29/2015
• Est. Priority Date: 12/31/2003
• Status: Active Grant

• Current Assignee: ResMed Pty Ltd. (ResMed Incorporated)
• Original Assignee: Resmed Limited (ResMed Incorporated)
• Inventors: Davidson, Aaron Samuel, Gunaratnam, Michael Kassipillai, Lynch, Susan Robyn, Raje, Milind Chandrakant, Robinson, Gary Christopher, Lubke, Steven John, Smart, Gregory Scott, Kwok, Philip Rodney, Scheiner, Rupert Christian
• Primary Examiner(s): Yu, Justine
• Assistant Examiner(s): MILLER, CHRISTOPHER E
• Application Number:
  US12/700,878
• Publication Number:
  US 20100132717A1
• Time in Patent Office: 2,153 Days
• Field of Search: 128/206.11, 128/206.18, 128/206.24, 128/207.18, 128/203.29, 128/205.25, 128/206.12, 128/206.21, D24/110, D24/110.1, D24/110.5, D24/112
• US Class Current: 1/1
• CPC Class Codes: A61M 16/0057 Pumps therefor
• CPC Class Codes: A61M 16/06 Respiratory or anaesthetic masks
• CPC Class Codes: A61M 16/0611 with a gusset portion
• CPC Class Codes: A61M 16/0616 with face sealing means comprising a flap or membrane projecting inwards, such that sealing increases with increasing inhalation gas pressure
• CPC Class Codes: A61M 16/0622 having an underlying cushion
• 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 16/0683 Holding devices therefor
• CPC Class Codes: A61M 16/0816 Joints or connectors
• CPC Class Codes: A61M 16/0825 with ball-sockets
• CPC Class Codes: A61M 16/0858 Pressure sampling ports
• CPC Class Codes: A61M 16/208 Non-controlled one-way valves, e.g. exhalation, check, pop-off non-rebreathing valves
• CPC Class Codes: A62B 18/084 Means for fastening gas-masks to heads or helmets

Abstract

A breathing arrangement includes a patient interface, at least one inlet conduit, and a headgear assembly. The patient interface includes a mouth covering assembly including a cushion structured to sealingly engage around exterior of a patient'"'"'s mouth in use, a nozzle assembly including a pair of nozzles structured to sealingly engage within nasal passages of a patient'"'"'s nose in use, and an element connecting the mouth covering assembly and the nozzle assembly. The at least one inlet conduit is structured to deliver breathable gas into at least one of the mouth covering assembly and the nozzle assembly for breathing by the patient. The headgear assembly is removably connected to at least one of the mouth covering assembly and the nozzle assembly so as to maintain the mouth covering assembly and the nozzle assembly in a desired position on the patient'"'"'s face.

Claims

1. A breathing arrangement for use between a patient and a structure to deliver a flow of pressurized breathable gas to the patient for treatment of sleep disordered breathing, the breathing arrangement comprising:

a cushion comprising an aperture adapted to receive the patient'"'"'s mouth, and the cushion configured to seal around an exterior of the patient'"'"'s mouth when applied to the patient'"'"'s face;

a nasal interface configured to fluidically couple the flow of pressurized breathable gas with the nasal airway of the patient when the nasal interface is applied to the patient'"'"'s nose without forming a seal on a nasal bridge region of the patient'"'"'s face, wherein the nasal interface includes a patient contacting portion defining two separate openings to deliver the flow of pressurized breathable gas to the patient'"'"'s nasal airway when the nasal interface is applied to the patient'"'"'s nose;

a headgear assembly configured and arranged to maintain the cushion and the nasal interface in position on the patient'"'"'s face and provide force vectors that allow for effective sealing of the cushion at the patient'"'"'s mouth and the nasal interface at the patient'"'"'s nose, respectively; and

a flexible element to flexibly connect the nasal interface and the cushion,

wherein the flexible element is structured to support the patient contacting portion and its two separate openings along a side wall of the cushion to provide flexibility between the nasal interface and the cushion and provide for movement and changes in alignment between the nasal interface and the cushion.

2. A breathing arrangement according to claim 1, wherein the cushion is formed of elastomeric material.

3. A breathing arrangement according to claim 1, wherein the cushion comprises an upper surface defining a nasal interface connection area at which the nasal interface is connected.

4. A breathing arrangement according to claim 1, wherein the nasal interface and the cushion are integral.

5. A breathing arrangement according to claim 1, wherein the cushion defines at least a portion of a first breathing chamber fluidically connected to the flow of pressurized breathable gas and the nasal interface defines a second breathing chamber fluidically connected to the first breathing chamber for supplying the pressurized breathable gas to the patient'"'"'s nose.

6. A breathing arrangement according to claim 5, further comprising:

a swivel elbow, wherein the swivel elbow is fluidically connected to the first chamber.

7. A breathing arrangement according to claim 1, wherein the headgear assembly is adjustable.

8. A breathing arrangement according to claim 1, wherein the cushion and the nasal interface form a mask selected from one of a continuous positive airway pressure mask, a bi-level positive airway pressure mask, an intermittent mechanical positive pressure ventilation mask, and a ventilation mask.

9. The breathing arrangement according to claim 1, wherein the flexible element is structured to allow gas to pass between the nasal interface and the cushion so that pressurized breathable gas is configured to be delivered to both the patient'"'"'s nose and the patient'"'"'s mouth.

10. The breathing arrangement according to claim 1, wherein the flexible element comprises a bellows to flexibly connect the nasal interface and the cushion.

11. The breathing arrangement according to claim 1, wherein the cushion includes a non-face-contacting portion and a face-contacting portion, the non-face-contacting portion being provided to a frame and the face-contacting portion having a resilient membrane structured to provide a seal.

12. The breathing arrangement according to claim 11, wherein the cushion includes a side wall, a rim extending away from the side wall, and the membrane is spaced from and substantially surrounds the rim.

13. The breathing arrangement according to claim 1, wherein the nasal interface and the cushion form one chamber.

14. A breathing arrangement according to claim 1, wherein the headgear assembly includes upper side straps adapted to be routed over the patient'"'"'s ears and lower side straps adapted to be routed under the patient'"'"'s ears.

15. A breathing arrangement according to claim 14, wherein the upper and lower side straps are adapted to provide respective force vectors that allow for the effective sealing.

16. A breathing arrangement according to claim 14, wherein the upper side straps are arranged to provide a force vector that is angled upwardly with respect to a horizontal plane of the breathing arrangement.

17. A breathing arrangement according to claim 14, wherein the lower side straps are arranged to provide a force vector that is generally aligned with a horizontal plane of the breathing arrangement.

18. A respiratory mask assembly for supplying a flow of pressurized breathable gas to a mouth and nose of a patient, the mask assembly comprising:

a cushion comprising

a gas exit shaped to accommodate the patient'"'"'s mouth and allow the cushion to provide a substantially gas-tight seal around an exterior of the patient'"'"'s mouth when applied to the patient'"'"'s face; and

an upper surface;

a nasal interface flexibly connected to the upper surface of the cushion and configured to fluidically couple the flow of breathable gas with the nasal airway of the patient when the nasal interface is applied to the patient'"'"'s nose without forming a seal on a nasal bridge region of the patient'"'"'s face, wherein the nasal interface includes a patient contacting portion defining two separate openings to deliver the flow of pressurized breathable gas to the patient'"'"'s nasal airway when the nasal interface is applied to the patient'"'"'s nose; and

a flexible element to flexibly connect the nasal interface and the cushion,

wherein the flexible element is structured to support the patient contacting portion and its two separate openings along the upper surface of the cushion to provide flexibility between the nasal interface and the cushion and provide for independent movement between the nasal interface and the cushion.

19. The respiratory mask assembly according to claim 18, wherein the flexible element is structured to allow gas to pass between the nasal interface and the cushion so that pressurized breathable gas is configured to be delivered to both the patient'"'"'s nose and the patient'"'"'s mouth.

20. The respiratory mask assembly according to claim 18, wherein the flexible element comprises a bellows to flexibly connect the nasal interface and the cushion.

21. The respiratory mask assembly according to claim 18, wherein the cushion defines at least a portion of a first breathing chamber fluidically connected to the flow of pressurized breathable gas and the nasal interface defines a second breathing chamber fluidically connected to the first breathing chamber for supplying the pressurized breathable gas to the patient'"'"'s nose.

22. The respiratory mask assembly according to claim 18, wherein the cushion is formed in one-piece along with the nasal interface.

23. The respiratory mask assembly according to claim 18, wherein the flexible element allows the entire nasal interface to be independently aligned with respect to the cushion.

24. A breathing arrangement for use between a patient and a structure to deliver a flow of pressurized breathable gas to the patient, the breathing arrangement comprising:

a frame having a main body and a side frame member provided on each lateral side of the main body;

the main body providing an aperture therethrough for the introduction of breathable gas in a breathing cavity;

each side frame member including a first connector extending therefrom;

an inlet conduit coupled to the aperture for delivering breathable gas into the breathing cavity;

a patient interface provided to the frame, the patient interface including a cushion adapted to sealingly engage around an exterior of the patient'"'"'s mouth and a nasal interface adapted to fluidically couple the inlet conduit with the nasal airway of the patient without forming a seal on a nasal bridge region of the patient'"'"'s face, and a flexible element to flexibly connect the nasal interface and the cushion, wherein the nasal interface includes a patient contacting portion defining two separate openings to deliver the flow of pressurized breathable gas to the patient'"'"'s nasal airway when the nasal interface is applied to the patient'"'"'s nose, and the flexible element is structured to support the patient contacting portion and its two separate openings along a side wall of the cushion to provide flexibility between the nasal interface and the cushion and provide for independent movement and changes in alignment between the nasal interface and the cushion; and

a headgear assembly including at least one strap wherein each end of the strap has a second connector coupled thereto, each second connector configured to engage a respective first connector to interlock the headgear assembly with the frame,

wherein the headgear assembly is configured and arranged to maintain the cushion and the nasal interface in position on the patient'"'"'s face and provide force vectors that allow for effective sealing of the cushion at the patient'"'"'s mouth and the nasal interface at the patient'"'"'s nose, respectively.

25. A breathing arrangement according to claim 24, wherein the first connector is a male connector, and each side frame member includes said male connector.

26. A breathing arrangement according to claim 24, wherein the headgear assembly includes upper and lower straps.

27. The breathing arrangement according to claim 24, wherein the flexible element is structured to allow gas to pass between the cushion and the nasal interface so that pressurized breathable gas is configured to be delivered to both the patient'"'"'s nose and the patient'"'"'s mouth.

28. The breathing arrangement according to claim 24, wherein the flexible element comprises a bellows to flexibly connect the nasal interface and the cushion.

29. The breathing arrangement according to claim 24, wherein the frame is relatively rigid and the cushion is relatively flexible.

30. The breathing arrangement according to claim 24, wherein the frame and the cushion are constructed of different materials.

31. The breathing arrangement according to claim 24, wherein the cushion is integral with the frame.

32. The breathing arrangement according to claim 24, wherein the cushion is removably and substantially gas-tightly connected to the frame.

33. The breathing arrangement according to claim 24, wherein the cushion is formed in one-piece along with the nasal interface.

34. The breathing arrangement according to claim 24, wherein the cushion, the nasal interface, and the frame are integral to form a one-piece oral and nasal mask.

35. The breathing arrangement according to claim 24, further comprising a swiveling elbow connector to attach the frame to the inlet conduit.

36. The breathing arrangement according to claim 24, wherein the cushion and the frame define a first interior breathing chamber fluidically connected to the inlet conduit for receiving the gas therein, and the nasal interface defines a second interior breathing chamber fluidically connected to first interior breathing chamber for supplying the gas to the nasal airway.