Mask with integral cushion and forehead piece
A respiratory mask has an adjustable forehead support member that is simple and inexpensive to manufacture. The forehead support member may be adjusted by rotating a forehead pad about an off-center bore or by bending an angular adjustment beam. The mask has a mask cushion with an accordionate membrane having at least two hinged portions. The mask may be constructed with a mask frame, the mask cushion, and the forehead support member molded as one piece.
1. An integrated respiratory mask for delivery of pressurized, breathable gas to a wearer's airways, the integrated respiratory mask comprising:
a cushion supporting portion having a periphery;
an air inlet portion joined to the cushion supporting portion by a first integral hinge;
a forehead support portion joined to the cushion supporting portion by a second integral hinge; and
a sealing member formed on the periphery of the cushion supporting portion, the sealing member structured to form a pneumatic seal with the air inlet portion when the first integral hinge is folded to engage the air inlet portion with the cushion supporting portion.
2. The integrated respiratory mask of claim 1 , wherein the cushion supporting portion, the air inlet portion, and forehead support portion comprise one piece.
3. The integrated respiratory mask of claim 1 , wherein the forehead support portion comprises a forehead pad mounting portion, a main body portion, and an offset portion, the offset portion structured to offset the forehead pad mounting portion relative to the main body portion.
4. The integrated respiratory mask of claim 3 , wherein a forehead pad is provided to the forehead pad mounting portion.
5. The integrated respiratory mask of claim 4 , wherein the forehead pad is adjustable.
6. The integrated respiratory mask of claim 3 , wherein the forehead pad mounting portion comprises a strap attachment portion.
7. The integrated respiratory mask of claim 3 , wherein the offset portion comprises a rib to strengthen the offset portion.
8. The integrated respiratory mask of claim 1 , wherein the air inlet portion comprises a latch located opposite of the first integral hinge and the cushion supporting portion comprises a lip structured to receive the latch when the air inlet portion is folded onto the cushion supporting portion.
9. The integrated respiratory mask of claim 1 , further comprising a mask cushion joined to the cushion supporting portion.
10. The integrated respiratory mask of claim 9 , further comprising one piece and being formed from a single material.
11. The integrated respiratory mask of claim 10 , wherein the mask cushion is less rigid than the remainder of the mask.
12. The integrated respiratory mask of claim 11 , wherein the density of the material of the mask cushion is different from the density of the material of the remainder of the mask.
13. The integrated respiratory mask of claim 10 , further comprising stepped contours or ribs for increased rigidity.
14. The integrated respiratory mask of claim 9 , wherein the mask cushion comprises a different material from the remainder of the mask, such that the mask cushion is less rigid than the remainder of the mask.
15. The integrated respiratory mask of claim 14 , wherein the mask cushion is attached to the mask by a mechanical interlock formed by overmolding.
16. The integrated respiratory mask of claim 15 , wherein the cushion supporting portion further comprises channels to allow bleed through of the material of the mask cushion during overmolding of the mask cushion.
17. The integrated respiratory mask of claim 1 , wherein the forehead support portion further comprises a pair of strap attachment portions.
18. The integrated respiratory mask of claim 1 , further comprising a pair of forehead support adjustment mechanisms to adjust the forehead support portion relative to the cushion supporting portion.
19. The integrated respiratory mask of claim 18 , wherein the pair of forehead support adjustment mechanisms adjust the angle and/or the distance of the forehead support portion relative to the cushion supporting portion.
20. The integrated respiratory mask of claim 18 , wherein the pair of forehead support adjustment mechanisms are joined with the forehead support portion by integral hinges.