Cushion for a respiratory mask assembly

• US 8,733,358 B2
• Filed: 05/17/2011
• Issued: 05/27/2014
• Est. Priority Date: 09/07/2001
• Status: Expired due to Term

• Current Assignee: ResMed Pty Ltd. (ResMed Incorporated)
• Original Assignee: Resmed Limited (ResMed Incorporated)
• Inventors: Lithgow, Perry David, Frater, Robert Henry, Drew, Joanne Elizabeth, Guney, Memduh, Fu, Timothy Tsun-Fai, Kwok, Philip Rodney
• Primary Examiner(s): DOUGLAS, STEVEN O
• Application Number:
  US13/067,211
• Publication Number:
  US 20110220114A1
• Time in Patent Office: 1,106 Days
• Field of Search: 128/205.25, 12820122-20124, 128/201.29, 128/206.21, 128/206.24, 128/206.26, 128/206.28, 128/207.11, 128/207.13
• US Class Current: 128/206.24
• 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 16/0633 with forehead support
• CPC Class Codes: A61M 16/0638 in the form of a pivot
• CPC Class Codes: A61M 16/0683 Holding devices therefor
• CPC Class Codes: A61M 16/08 Bellows; Connecting tubes having means for taking samples G01N1/22; Water traps; Patient circuits
• CPC Class Codes: A61M 16/0825 with ball-sockets
• CPC Class Codes: Y10T 29/4987 Elastic joining of parts

Abstract

A respiratory mask includes a frame including a breathable gas port, wherein the frame defines an inner chamber to receive at least one of a wearer'"'"'s nasal region and mouth, and a cushion including a flange connected to the frame, an inner rim defining an opening to the inner chamber of the frame, and a sealing portion disposed between the flange and the inner rim to contact the wearer'"'"'s face. The sealing portion includes a nasal seal section to span a wearer'"'"'s face above the wearer'"'"'s nares, side seal sections extending from each side of the nasal seal section on both sides of the wearer'"'"'s mouth, and a chin seal section that extends between the side seal sections, wherein the chin seal section is upwardly curved in an arch to follow the chin'"'"'s bony contour.

Claims

1. A respiratory mask comprising:

a frame including a breathable gas port, wherein the frame defines an inner chamber adapted to receive at least one of a wearer'"'"'s nasal region and mouth; and

a cushion including a flange connected to the frame, an inner rim defining an opening to the inner chamber of the frame, and a sealing portion disposed between the flange and the inner rim adapted to contact the wearer'"'"'s face,

wherein the sealing portion includes a nasal seal section adapted to span a wearer'"'"'s face above the wearer'"'"'s nares, side seal sections extending from each side of the nasal seal section and adapted to extend on both sides of the wearer'"'"'s mouth, and a chin seal section that extends between the side seal sections, wherein the chin seal section is upwardly curved in an arch and adapted to follow the chin'"'"'s bony contour.

2. The respiratory mask of claim 1, wherein the chin seal section is one of an inverted U-shape, W-shaped and boomerang shaped.

3. The respiratory mask of claim 1, wherein the side seal sections are adapted to extend downward to the wearer'"'"'s lower jaw.

4. The respiratory mask of claim 1, wherein the chin seal section is adapted to be positioned between a bottom lip and a mental protuberance of the wearer.

5. The respiratory mask of claim 1, wherein the sealing portion is thinner than the rim.

6. The respiratory mask of claim 1, wherein the sealing portion is a lip that extends beyond the rim.

7. The respiratory mask of claim 1, wherein the cushion and the frame are integral.

8. The respiratory mask of claim 1, wherein the cushion is removably attached to the frame.

9. The respiratory mask of claim 1, wherein the cushion is made of a silicone elastomer.

10. The respiratory mask of claim 1, wherein the cushion comprises a combination of materials that are assembled together.

11. The respiratory mask of claim 1, wherein the cushion comprises a combination of integrally formed materials.

12. The respiratory mask of claim 1, wherein the cushion is made of gel.

13. The respiratory mask of claim 1, wherein the cushion is made of foam.

14. The respiratory mask of claim 13, wherein the cushion is made of gel and foam.

15. The respiratory mask of claim 1, wherein the frame is generally triangular.

16. The respiratory mask of claim 1, wherein the cushion is made of silicone and gel.

17. The respiratory mask of claim 1, wherein the frame is generally trapezoidal.

18. The respiratory mask of claim 1, wherein the frame includes a vent.

19. The respiratory mask of claim 1, wherein the frame includes head strap fasteners.

20. The respiratory mask of claim 1, wherein the sealing portion defines an inverted U-shaped seal section that is adjustable and adapted to fit the contour of the wearer'"'"'s face.

21. A cushion for use in a respiratory mask, comprising:

a flange to connect to a mask frame;

an inner rim defining an opening adapted to surround at least one of the wearer'"'"'s nares and mouth; and

a sealing portion disposed between the flange and the inner rim and adapted to contact the wearer'"'"'s face,

wherein the sealing portion includes a nasal seal section adapted to span a wearer'"'"'s face above the wearer'"'"'s nares, side seal sections extending from each side of the nasal section and adapted to extend on both sides of the wearer'"'"'s mouth, and a chin seal section that extends between the side seal sections, wherein the chin seal section is upwardly curved in an arch and adapted to follow the chin'"'"'s bony contour.

22. The cushion of claim 21, wherein the side seal sections extend downward and are adapted to cover at least a portion of the wearer'"'"'s lower jaw.

23. The cushion of claim 21, wherein the chin seal section is adapted to be positionable between a bottom lip and a mental protuberance of the wearer.

24. The cushion of claim 21, wherein the sealing portion is thinner than the rim.

25. The cushion of claim 21, wherein the sealing portion is a lip that extends beyond the rim.

26. The cushion of claim 21 made of a silicone elastomer, gel and/or foam.

27. A respiratory mask including a frame and the cushion of claim 21, wherein the cushion is supported by the frame.

28. The cushion of claim 21, wherein the opening is adapted to cover only the wearer'"'"'s mouth.