Surgery – Respiratory method or device – Face mask covering a breathing passage
Patent
1997-01-31
2000-09-05
Lewis, Aaron J.
Surgery
Respiratory method or device
Face mask covering a breathing passage
12820626, A62B 1802
Patent
active
061127469
ABSTRACT:
A nasal cushion (30) comprises a substantially triangularly shaped frame (32) from which extends a membrane (34). The frame (32) has a scalloped edge (36) by which the cushion (30) is affixed to a mask body. The membrane (34) has an aperture (38) into which the wearer's nose is received. The membrane (34) is spaced away from the rim (40) of the frame (32), and its outer surface (41) is of substantially the same shape as the rim (40). Respective notches (42,44) receive the bridge of the wearer's nose. The wearer's nose is received through the aperture (38) into the chamber within the mask body (46). The seal forming portion (45) thus contacts both the surface of the wearer's nose and a portion of the wearer's face in the region between the base of the nose and the upper lip, and around the sides and over the bridge of the nose. The shape of the seal forming portion (45) is particularly suited to effectively seal the difficult region of the facial contour that is the crease between the sides of the nose and the face.
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Mask 1 Photographs, Respironics Inc., Reusable Full Mask (small) Part # 452033 Lot #951108.
Mask 2 Photographs, Puritan--Bennett, Adam Curcuit, Shell Part # 231700, Swivel Part # 616329-00, Pillows (medium) Part #616324.
Mask 3, Photographs, DeVilbiss Healthcare Inc., DeVilbiss Seal-Ring and CPAP Mask Kit (medium), Part 73510-669.
Mask 4 Photographs, Respironics Inc., Monarch Mini Mask with Pressure Port. Part # 572004, Monarch Headgear, Part # 572011.
Mask 5 Photographs, Healthdyne Technologies, Nasal CPAP Mask (medium narrow), Part # 702510.
Mask 6 Photographs, Healthdyne Technologies, Soft Series Nasal CPAP Mask, Part # 702020.
Mask 7 Photographs, DeVilbiss Healthcare Inc., Small Mask and Seal Rings, Part # 73510-668.
Mask 8 Photographs, Respironics Inc., Reusable Contour Mask (medium), Part # 302180.
Mask 9 Photographs,
Kwok Philip Rodney
Styles Robert Edward
Lewis Aaron J.
ResMed Limited
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