MASK SYSTEM WITH SNAP-FIT SHROUD

• US 20180021536A1
• Filed: 10/04/2017
• Published: 01/25/2018
• Est. Priority Date: 03/04/2008
• Status: Active Grant

• Current Assignee: ResMed Pty Ltd. (ResMed Incorporated)
• Original Assignee: Resmed Limited (ResMed Incorporated)
• Inventors: NG, Eva, Lockwood, David James, Wehbeh, Jamie Graeme, Valcic, Zoran, D'Souza, Errol Savio Alex, Eves, Matthew, Sari, Mahsita
• Granted Patent: US 9,962,511 B2
• Time in Patent Office: Days
• CPC Class Codes: A61M 16/0057 Pumps therefor
• CPC Class Codes: A61M 16/0066 Blowers or centrifugal pumps
• 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 16/0683 Holding devices therefor
• CPC Class Codes: A61M 16/0694 Chin straps
• CPC Class Codes: A61M 16/0816 Joints or connectors
• CPC Class Codes: A61M 16/0825 with ball-sockets
• CPC Class Codes: A61M 16/0841 for sampling
• CPC Class Codes: A61M 16/0858 Pressure sampling ports
• CPC Class Codes: A61M 16/0875 Connecting tubes
• CPC Class Codes: A61M 16/20 Valves specially adapted to medical respiratory devices
• CPC Class Codes: A61M 16/208 Non-controlled one-way valves, e.g. exhalation, check, pop-off non-rebreathing valves
• CPC Class Codes: A61M 2016/0661 with customised shape
• CPC Class Codes: A61M 2202/0085 product washed out
• CPC Class Codes: A61M 2202/0225 Carbon oxides, e.g. Carbon dioxide

Abstract

A shroud (1020) for a mask system includes a retaining portion structured to retain a frame (1040), a pair of upper headgear connectors (1024) each including an elongated arm (1026) and a slot (1027) at the free end of the arm adapted to receive a headgear strap, and a pair of lower headgear connectors (1025) each adapted to attach to a headgear strap. The retaining portion, the upper headgear connectors, and the lower headgear connectors are integrally formed as a one piece structure.

Claims

1. A mask system, comprising:

a frame defining a breathing chamber;

a cushion provided to the frame and adapted to form a seal with the patient'"'"'s face; and

a shroud provided to the frame,

wherein the shroud and the frame are co-molded with one another, the frame being constructed of a first, relatively soft, elastomeric material and the shroud being constructed of a second material that is more rigid than the frame,

and at least a portion of the frame includes a concertina section having a plurality of folds, each of the folds having a side wall with the side walls of the folds becoming progressively longer away from the patient'"'"'s face.

2. A mask system according to claim 1, wherein the frame is constructed of silicone.

3. A mask system according to claim 1, wherein the shroud is constructed of polycarbonate.

4. A mask system according to claim 1, wherein the concertina section is provided to a nasal bridge region of the frame.

5. A mask system according to claim 1, wherein the cushion is a full-face cushion.

6. A mask system according to claim 1, wherein the flexibility of the concertina section is variable.

7. A mask system according to claim 6, wherein the flexibility of the concertina section is variable by varying at least one of a number of folds, a wall thickness of each fold, and a depth of each fold.

8. A cushion module, comprising:

a frame defining a breathing chamber; and

a cushion adapted to form a seal with the patient'"'"'s face,

wherein the frame and the cushion are co-molded with one another, the cushion being constructed of a first, relatively soft, elastomeric material and the frame being constructed of a second material that is more rigid than the cushion, and at least a portion of the frame includes a concertina section.

9. A cushion module according to claim 8, wherein the concertina section includes a bellows structure with one or more folds.

10. A cushion module according to claim 9, wherein the flexibility of the concertina section is variable.

11. A cushion module according to claim 10, wherein the flexibility of the concertina section is variable by varying at least one of a number of folds, a wall thickness of each fold, and a depth of each fold.

12. A cushion module according to claim 8, wherein the concertina section is provided to a nasal bridge region of the frame.

13. A cushion module according to claim 8, wherein the cushion is a full-face cushion.

14. A mask system, comprising:

a shroud; and

a cushion module according to claim 8 provided to the shroud.

15. A mask system according to claim 14, wherein the shroud includes headgear connectors adapted to removably attach to respective headgear straps of headgear.

16. A mask system according to claim 15, wherein the shroud includes upper and lower headgear connectors on each side of the shroud.

17. A mask system according to claim 16, wherein each upper headgear connector includes an elongated arm and a slot at the free end of the arm adapted to receive a respective headgear strap in use.

18. A mask system according to claim 16, wherein each lower headgear connector includes a clip receptacle adapted to be removably interlocked with a headgear clip associated with a respective headgear strap.

19. A mask system according to claim 14, wherein the shroud includes an open construction that provides an annular retaining portion structured to retain the frame.

20. A mask system according to claim 14, further comprising an elbow adapted to be connected to an air delivery tube that delivers breathable gas to the patient.