Respiratory mask assembly

• US 9,962,510 B2
• Filed: 05/28/2014
• Issued: 05/08/2018
• Est. Priority Date: 10/25/2005
• Status: Active Grant

• Current Assignee: ResMed Pty Ltd. (ResMed Incorporated)
• Original Assignee: Resmed Limited (ResMed Incorporated)
• Inventors: Ng, Eva, Henry, Robert Edward, Kwok, Philip Rodney, Selvarajan, Karthikeyan
• Primary Examiner(s): Yu, Justine
• Assistant Examiner(s): SUL, DOUGLAS YOUNG
• Application Number:
  US14/289,158
• Publication Number:
  US 20140261434A1
• Time in Patent Office: 1,441 Days
• CPC Class Codes: A61M 16/06 Respiratory or anaesthetic masks
• CPC Class Codes: A61M 16/0605 Means for improving the adaptation of the mask to the patient
• 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 16/0633 with forehead support
• CPC Class Codes: A61M 16/0638 in the form of a pivot
• CPC Class Codes: A61M 16/0644 having the means for adjusting its position
• CPC Class Codes: A61M 16/065 in the form of a pivot
• 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 16/0683 Holding devices therefor
• CPC Class Codes: A61M 16/0694 Chin straps
• CPC Class Codes: A61M 16/0816 Joints or connectors
• CPC Class Codes: Y10T 29/49826 Assembling or joining

Abstract

A system of breathing arrangements for delivering breathable gas to a patient includes at least first and second cushion components, e.g., full-face, nasal, nasal prongs, nose tip, and/or a combination of any of the above, including a nasal or full-face cushion and nasal prongs/nozzles combination, etc., that are different from one another in at least one aspect, and a common frame assembly configured to support each of the first and second cushion components. Various embodiments are directed to a full-face or nasal mask used with a frame having lateral connector portions having a stiffening member. The mask assembly may include a nose height adjustment device for the height of the cushion, or a cushion adjustment member by which the position of the cushion may be adjusted relative to the frame. The mask assembly may include a chin strap assembly.

Claims

1. A respiratory mask assembly for providing respiratory therapy to a patient, the respiratory mask assembly comprising:

a frame including a main body and a forehead support including a tapered neck extending from the main body, the forehead support including a pair of upper headgear connectors,

wherein the frame includes a lower opening having a closed circular shape and an upper opening having a closed shape that is spaced apart and superior to the lower opening;

a pair of lower headgear connectors, each of said pair of lower headgear connectors configured to connect to the frame;

a cushion component configured to releasably couple with the frame,

the cushion component including a body portion and a sealing portion,

wherein the body portion is relatively harder than the sealing portion,

the body portion forming at least a portion of a breathing chamber pressurizable to a therapeutic pressure, and the body portion including a circular inlet opening structured to receive a flow of air at the therapeutic pressure for breathing by the patient,

wherein;

the circular inlet opening of the body portion is coaxially aligned with the closed circular shape of the lower opening of the frame along a common longitudinal axis when the cushion component is releasably coupled with the frame,

the body portion includes an inside surface exposed to said therapeutic pressure in use and an outside surface exposed to ambient pressure, and the frame includes a wall arranged along the outside surface of the body portion so that the wall is outside the breathing chamber, and

the sealing portion is constructed and arranged to form a seal with a patient'"'"'s nose and mouth, the sealing portion including a hole therein adapted to receive the patient'"'"'s nose and mouth such that the flow of air at the therapeutic pressure is delivered to the patient'"'"'s nose and mouth;

a positioning and retaining arrangement structured and arranged to provide substantially non-adjustable coupling between the body portion of the cushion component and the frame in which adjustable movement between the body portion of the cushion component and the frame is substantially resisted,

the positioning and retaining arrangement comprising a protrusion on the body portion of the cushion component, the protrusion being spaced apart and superior to the circular inlet opening of the cushion component, and the protrusion of the cushion component is received within and exposed through the upper opening of the frame towards a front side of the frame when the cushion component is releasably coupled with the frame;

an elbow structured to connect to a respiratory gas conduit to deliver the flow of air at the therapeutic pressure to the breathing chamber of the cushion component, wherein the elbow is configured to be coupled to the frame and to communicate with the cushion component through the circular inlet opening of the body portion; and

headgear to maintain the respiratory mask assembly in position on a patient'"'"'s head, the headgear including upper straps adapted to connect to the upper headgear connectors of the frame and lower straps adapted to connect to the lower headgear connectors.

2. The respiratory mask assembly according to claim 1, wherein the positioning and retaining arrangement is structured and arranged to resist adjustable movement between the body portion and the frame in an anterior-posterior direction when the cushion complaint is releasably coupled with the frame.

3. The respiratory mask assembly according to claim 1, wherein the positioning and retaining arrangement further comprises a mask retainer part of the body portion of the cushion component and a frame retainer part of the frame, wherein the frame retainer part is structured and arranged to engage behind the mask retainer part when the cushion component is releasably coupled with the frame.

4. The respiratory mask assembly according to claim 1, wherein the circular inlet opening of the body portion is bounded by an annular flange that protrudes forwardly from the body portion,

further comprising a gas washout vent for washout of gas from the breathing chamber to ambient atmosphere,

wherein the body portion of the cushion component comprises polycarbonate and the sealing portion of the cushion component comprises silicone,

wherein the body portion includes a surface extending from an outer edge of the annular flange to the protrusion, and the frame includes a wall between the upper and lower openings that is structured and arranged to cover said surface when the cushion component is releasably coupled with the frame, and

wherein each of said pair of lower headgear connectors is configured to detachably connect to the frame.

5. The respiratory mask assembly according to claim 4, wherein the sealing portion of the cushion component includes a gusset portion in at least a nasal bridge region of the sealing portion.

6. The respiratory mask assembly according to claim 5, wherein the body portion, the sealing portion, and the breathing chamber of the cushion component form a unit that as a whole is releasably coupled with the frame.

7. The respiratory mask assembly according to claim 4, wherein the positioning and retaining arrangement further comprises a mask retainer part of the body portion of the cushion component and a frame retainer part of the frame, wherein the frame retainer part is structured and arranged to engage behind the mask retainer part when the cushion component is releasably coupled with the frame.

8. The respiratory mask assembly according to claim 1, wherein each of said pair of lower headgear connectors is connected to the frame.

9. The respiratory mask assembly according to claim 1, wherein the sealing portion of the cushion component includes a gusset portion in at least a nasal bridge region of the sealing portion.

10. A respiratory mask assembly for providing respiratory therapy to a patient, the respiratory mask assembly comprising:

a frame including a main body and a pair of upper lateral arms, each of the pair of upper lateral arms including a respective one of a pair of upper headgear connectors,

wherein the frame includes a lower opening having a closed shape and an upper opening having a closed shape that is spaced apart and superior to the lower opening;

a pair of lower headgear connectors, each of said pair of lower headgear connectors configured to connect to the frame;

a cushion component configured to releasably couple with the frame,

the cushion component including a body portion and a sealing portion,

wherein the body portion is relatively harder than the sealing portion;

the body portion forming at least a portion of a breathing chamber pressurizable to a therapeutic pressure, and the body portion including a circular inlet opening structured to receive a flow of air at the therapeutic pressure for breathing by the patient,

wherein;

the circular inlet opening of the body portion is coaxially aligned with the closed shape of the lower opening of the frame along a common longitudinal axis when the cushion component is releasably coupled with the frame,

the body portion includes an inside surface exposed to said therapeutic pressure in use and an outside surface exposed to ambient pressure, and the frame includes a side wall arranged along the outside surface of the body portion so that the side wall is outside the breathing chamber, and

the sealing portion is constructed and arranged to form a seal with a patient'"'"'s nose and mouth, the sealing portion including a hole therein adapted to receive the patient'"'"'s nose and mouth such that the flow of air at the therapeutic pressure is delivered to the patient'"'"'s nose and mouth;

a positioning and retaining arrangement structured and arranged to releasably couple the body portion of the cushion component to the main body of the frame in a substantially fixed, substantially non-adjustable position to resist adjustable movement between the body portion of the cushion component and the main body of the frame,

the positioning and retaining arrangement comprising a protrusion on the body portion of the cushion component, the protrusion being spaced apart and superior to the circular inlet opening of the cushion component, and the protrusion of the cushion component is received within and exposed through the upper opening of the frame towards a front side of the frame when the cushion component is releasably coupled with the frame;

an elbow structured to connect to a respiratory gas conduit to deliver the flow of air at the therapeutic pressure to the breathing chamber of the cushion component, wherein the elbow is configured to communicate with the cushion component through the circular inlet opening of the body portion; and

headgear to maintain the respiratory mask assembly in position on a patient'"'"'s head, the headgear including upper straps adapted to connect to the upper headgear connectors of the frame and lower straps adapted to connect to the lower headgear connectors.

11. The respiratory mask assembly according to claim 10, wherein the positioning and retaining arrangement is structured and arranged to resist adjustable movement between the body portion of the cushion component and the main body of the frame in an anterior-posterior direction when the body portion of the cushion component is releasably coupled with the main body of the frame.

12. The respiratory mask assembly according to claim 10, wherein the positioning and retaining arrangement further comprises a mask retainer part of the body portion of the cushion component and a frame retainer part of the frame, wherein the frame retainer part is structured and arranged to engage behind the mask retainer part to releasably retain the cushion component to the frame in the substantially fixed, substantially non-adjustable position.

13. The respiratory mask assembly according to claim 10, wherein the circular inlet opening of the body portion is bounded by annular flange that protrudes forwardly from the body portion,

further comprising a gas washout vent for washout of gas from the breathing chamber to ambient atmosphere.

wherein the body portion of the cushion component comprises polycarbonate and the sealing portion of the cushion component comprises silicone,

wherein the frame further comprises a pair of lower lateral arms, each of said pair of lower lateral arms being configured to connect to a respective one of the pair of lower headgear connectors,

wherein each of said pair of lower headgear connectors includes a press-fit connector, and

wherein the body portion includes a surface extending from an outer edge of the annular flange to the protrusion, and the frame includes a wall between the upper and lower openings that is structured and arranged to cover said surface when the cushion components is releasably couples with the frame.

14. The respiratory mask assembly according to claim 13, wherein the positioning and retaining arrangement further comprises a mask retainer part of the body portion of the cushion component and a frame retainer part of the frame, wherein the frame retainer part is structured and arranged to engage behind the mask retainer part to releasably retain the cushion component to the frame in the substantially fixed, substantially non-adjustable position.

15. The respiratory mask assembly according to claim 13, wherein the body portion, the sealing portion, and the breathing chamber of the cushion component form a unit that as a whole is releasably coupled with the frame.

16. The respiratory mask assembly according to claim 10, wherein each of said pair of lower headgear connectors is connected to the frame.

17. A respiratory mask assembly for providing respiratory therapy to a patient, the respiratory mask assembly comprising:

a frame including a main body and a pair of upper lateral arms, each of the pair of upper lateral arms including a respective one of a pair of upper headgear connectors,

wherein the frame includes an opening having a closed shape;

a pair of lower headgear connectors, each of said pair of lower headgear connectors configured to connect to the frame;

a cushion component configured to releasably couple with the frame,

the cushion component including a body portion and a sealing portion,

wherein the body portion is relatively harder than the sealing portion,

the body portion forming at least a portion of a breathing chamber pressurizable to a therapeutic pressure, and the body portion including a circular inlet opening structured to receive a flow of air at the therapeutic pressure for breathing by the patient,

wherein the circular inlet opening of the body portion is bounded by an annular flange that protrudes forwardly from the body portion,

wherein;

the body portion includes an inside surface exposed to said therapeutic pressure in use and an outside surface exposed to ambient pressure, and the frame includes a side wall arranged along the outside surface of the body portion so that the side wall is outside the breathing chamber, and

the sealing portion is constructed and arranged to form a seal with a patient'"'"'s nose and mouth, the sealing portion including a hole therein adapted to receive the patient'"'"'s nose and mouth such that the flow of air at the therapeutic pressure is delivered to the patient'"'"'s nose and mouth;

a positioning and retaining arrangement structured and arranged to releasably couple the body portion of the cushion component to the main body of the frame in a substantially fixed, substantially non-adjustable position to resist adjustable movement between the body portion of the cushion component and the main body of the frame,

the positioning and retaining arrangement comprising an upper mask retainer part of the body portion of the cushion component and an upper frame retainer part of the main body of the frame, wherein the upper frame retainer part and the upper mask retainer part are configured to releasably retain the cushion component to the frame in the substantially fixed, substantially non-adjustable position,

wherein the upper mask retainer part is spaced apart and superior to the annular flange bounding the circular inlet opening of the body portion, and

the positioning and retaining arrangement further comprising a lower mask retainer part of the body portion of the cushion component and a lower frame retainer part of the main body of the frame, wherein the lower frame retainer part is structured and arranged to engage behind the lower mask retainer part to releasably retain the cushion component to the frame in the substantially fixed, substantially non-adjustable position;

an elbow structured to connect to a respiratory gas conduit to deliver the flow of air at the therapeutic pressure to the breathing chamber of the cushion component, wherein the elbow is configured to communicate with the cushion component through the circular inlet opening of the body portion; and

headgear to maintain the respiratory mask assembly in position on a patient'"'"'s head, the headgear including upper straps adapted to connect to the upper headgear connectors of the frame and lower straps adapted to connect to the lower headgear connectors.

18. The respiratory mask assembly according to claim 17, wherein the upper mask retainer part is positioned adjacent to an apex of the body portion of the cushion component,

wherein the lower mask retainer part comprises a protrusion and the lower frame retainer part comprises an edge of the frame,

wherein at least a portion of the outside surface of the body portion of the cushion component is exposed at a front side of the frame when the cushion component is releasably coupled with the frame,

further comprising a gas washout vent for washout of gas from the breathing chamber to ambient atmosphere,

wherein the body portion of the cushion component comprises polycarbonate and the sealing portion of the cushion component comprises silicone,

wherein the positioning and retaining arrangement is structured and arranged to resist adjustable movement between the body portion of the cushion component and the main body of the frame in an anterior-posterior direction when the body portion of the cushion component is releasably coupled with the main body of the frame, and

wherein the circular inlet opening includes a central axis, and the positioning and retaining arrangement is structured and arranged to resist adjustable movement about one or more axes extending generally transverse to the central axis.

19. The respiratory mask assembly according to claim 18, wherein the body portion, the sealing portion, and the breathing chamber of the cushion component form a unit that as a whole is releasably coupled with the frame.

20. The respiratory mask assembly according to claim 18, wherein the upper mask retainer part of the cushion component comprises a protrusion that is received within and exposed through the opening of the frame towards a front side of the frame when the cushion component is releasably coupled with the frame.

21. The respiratory mask assembly according to claim 18, wherein the upper mask retainer part of the cushion component is spaced apart from the outside surface of the body portion by a space, and the upper frame retainer part of the frame is received in the space when the cushion component is releasably coupled with the frame.

22. The respiratory mask assembly according to claim 17, wherein each of said pair of lower headgear connectors is connected to the frame.

23. The respiratory mask assembly according to claim 17, wherein the upper mask retainer part of the cushion component comprises a protrusion that is received within and exposed through the opening of the frame towards a front side of the frame when the cushion component is releasably coupled with the frame.

24. The respiratory mask assembly according to claim 17, wherein the upper mask retainer part of the cushion component is spaced apart from the outside surface of the body portion by a space, and the upper frame retainer part of the frame is received in the space when the cushion component is releasably coupled with the frame.

25. A respiratory mask assembly for providing respiratory therapy to a patient, the respiratory mask assembly comprising:

a frame including a main body and a forehead support extending from the main body, the forehead support including a pair of upper lateral arms, each of the pair of upper lateral arms including a respective one of a pair of upper headgear connectors, and the main body including a pair of lower headgear connectors,

wherein the frame includes an opening having a closed shape;

a cushion component configured to releasably couple with the frame,

the cushion component including a body portion and a sealing portion,

wherein the body portion is relatively harder than the sealing portion,

the body portion forming at least a portion of a breathing chamber pressurizable to a therapeutic pressure, and the body portion including a circular inlet opening structured to receive a flow of air at the therapeutic pressure for breathing by the patient,

wherein the circular inlet opening of the body portion is bounded by an annular flange that protrudes forwardly from the body portion,

wherein;

the body portion includes an inside surface exposed to said therapeutic pressure in use and an outside surface exposed to ambient pressure, and the frame includes a side wall arranged along the outside surface of the body portion so that the side wall is outside the breathing chamber, and

the sealing portion is constructed and arranged to form a seal with a patient'"'"'s nose and mouth, the sealing portion including a hole therein adapted to receive the patient'"'"'s nose and mouth such that the flow of air at the therapeutic pressure is delivered to the patient'"'"'s nose and mouth;

a positioning and retaining arrangement structured and arranged to releasably couple the body portion of the cushion component to the main body of the frame in a substantially fixed, substantially non-adjustable position to resist adjustable movement between the body portion of the cushion component and the main body of the frame,

the positioning and retaining arrangement comprising an upper mask retainer part of the body portion of the cushion component and an upper frame retainer part of the main body of the frame, wherein the upper frame retainer part is structured and arranged to engage behind the upper mask retainer part to releasably retain the cushion component to the frame in the substantially fixed, substantially non-adjustable position,

wherein the upper mask retainer part is spaced apart and superior to the annular flange bounding the circular inlet opening of the body portion, and

the positioning and retaining arrangement further comprising a lower mask retainer part of the body portion of the cushion component and a lower frame retainer part of the main body of the frame, wherein the lower frame retainer part is structured and arranged to engage behind the lower mask retainer part to releasably retain the cushion component to the frame in the substantially fixed, substantially non-adjustable position,

an elbow structured to connect to a respiratory gas conduit to deliver the flow of air at the therapeutic pressure to the breathing chamber of the cushion component, wherein the elbow is configured to communicate with the cushion component through the circular inlet opening of the body portion; and

headgear to maintain the respiratory mask assembly in position on a patient'"'"'s head, the headgear including upper straps adapted to connect to the upper headgear connectors of the frame and lower straps adapted to connect to the lower headgear connectors of the frame.

26. The respiratory mask assembly according to claim 25, wherein the upper mask retainer part is positioned adjacent to an apex of the body portion of the cushion component,

wherein the lower mask retainer part comprises a protrusion and the lower frame retainer part comprises an edge of the frame,

wherein at least a portion of the outside surface of the body portion of the cushion component is exposed at a front side of the frame when the cushion component is releasably coupled with the frame,

wherein the upper mask retainer part of the cushion component is received within and exposed through the opening of the frame towards the front side of the frame when the cushion component is releasably coupled with the frame,

further comprising a gas washout vent for washout of gas from the breathing chamber to ambient atmosphere,

wherein the body portion of the cushion component comprises polycarbonate and the sealing portion of the cushion component comprises silicone,

wherein the positioning and retaining arrangement is structured and arranged to resist adjustable movement between the body portion of the cushion component and the main body of the frame in an anterior-posterior direction when the body portion of the cushion component is releasably coupled with the main body of the frame, and

wherein the circular inlet opening includes a central axis, and the positioning and retaining arrangement is structured and arranged to resist adjustable movement about one or more axes extending generally transverse to the central axis.

27. The respiratory mask assembly according to claim 26, wherein the body portion, the sealing portion, and the breathing chamber of the cushion component form a unit that as a whole is releasably coupled with the frame.

28. A respiratory mask assembly for providing respiratory therapy to a patient, the respiratory mask assembly comprising:

a frame including a main body and a pair of upper lateral arms, each of the pair of upper lateral arms including a respective one of a pair of upper headgear connectors;

a pair of lower headgear connectors, each of said pair of lower headgear connectors configured to connect to the frame,

wherein the frame includes an opening having a closed circular shape, the opening arranged between the pair of headgear connectors;

a cushion component configured to releasably couple with the frame,

the cushion component including a body portion and a sealing portion,

wherein the body portion is relatively harder than the sealing portion;

the body portion forming at least a portion of a breathing chamber pressurizable to a therapeutic pressure, and the body portion including a circular inlet opening structured to receive a flow of air at the therapeutic pressure for breathing by the patient,

wherein;

the circular inlet opening of the body portion includes a forward facing orientation oriented towards a front side of the body portion opposite the sealing portion,

the circular inlet opening of the body portion is coaxially aligned with the closed circular shape of the opening of the frame along a common longitudinal axis when the cushion component is releasably coupled with the frame, the body portion includes an inside surface exposed to said therapeutic pressure in use and an outside surface exposed to ambient pressure, and the frame includes a wall arranged along the outside surface of the body portion so that the wall is outside the breathing chamber, and the sealing portion is constructed and arranged to form a seal with a patient'"'"'s nose and mouth, the sealing portion including a hole therein adapted to receive the patient'"'"'s nose and mouth such that the flow of air at the therapeutic pressure is delivered to the patient'"'"'s nose and mouth;

a positioning and retaining arrangement structured and arranged to releasably couple the body portion of the cushion component to the main body of the frame in a substantially fixed, substantially non-adjustable position to resist adjustable movement between the body portion of the cushion component and the main body of the frame,

an elbow structured to connect to a respiratory gas conduit to deliver the flow of air at the therapeutic pressure to the breathing chamber of the cushion component, wherein the elbow is configured to be coupled to the frame and to communicate with the cushion component through the circular inlet opening of the body portion; and

headgear to maintain the respiratory mask assembly in position on a patient'"'"'s head, the headgear including upper straps adapted to connect to the upper headgear connectors of the frame and lower straps adapted to connect to the lower headgear connectors.

29. The respiratory mask assembly according to claim 28, wherein the positioning and retaining arrangement is structured and arranged to resist adjustable movement between the body portion of the cushion component and the main body of the frame in an anterior-posterior direction when the body portion of the cushion component is releasably coupled with the main body of the frame.

30. The respiratory mask assembly according to claim 28, wherein the circular inlet opening of the body portion is bounded by an annular flange that protrudes forwardly from the body portion,

further comprising a gas washout vent for washout of gas from the breathing chamber to ambient atmosphere,

wherein the body portion of the cushion component comprises polycarbonate and the sealing portion of the cushion component comprises silicone, and

wherein the frame further comprises a pair of lower lateral arms, each of said pair of lower lateral arms configured to connect to a respective one of the pair of lower headgear connectors.

31. The respiratory mask assembly according to claim 30, wherein the body portion, the sealing portion, and the breathing chamber of the cushion component form a unit that as a whole is releasably coupled with the frame.

32. The respiratory mask assembly according to claim 28, wherein each of said pair of lower headgear connectors is connected to the frame.