Nasal Mask
OwnerSaeed Ziaeeinventor
Life of this patent
Estimating the term…
Abstract
A nasal mask has a shell portion that is a hollow enclosure with a rearwardly facing opening that is defined by edge portions of the shell portion. A resiliently deformable endless interface member engages and extends around the edge portion of the opening and forms a seal between the shell portion and the user's face. The shell portion and the interface member are generally symmetrical about a median place. The shell portion has two gas inlet orifices, one on each side of the median place. Each orifice is provided with an attachment mechanism upon which is attachable a swivel inlet. The swivel inlets may be rotated through 180 degrees and locked in place.
Claims13
A nasal pillow, for use in combination with a nasal mask, the nasal mask comprising a shell portion and a resiliently deformable endless interface member engaging with and extending around an edge portion of an opening of the shell portion and adapted to form a seal between the shell portion and the user's face, the shell portion having two inlet orifices and tubular pillow engaging members formed integrally with the shell portion and defining a flow passage through the orifices, the nasal pillow comprising:
- a resiliently deformable corrugated tubular member adapted to be received in the nostrils of a wearer of the mask and to connect with the pillow engaging member, said tubular member comprising a tapering tip, a plurality of relatively narrow intermediate portions and a plurality of relatively wide intermediate portions, and wherein said tip is inclined with respect to the longitudinal axis of said tubular member.
A shell portion for a nasal mask, said shell portion defining a hollow enclosure with a rearwardly facing opening defined by edge portions of the shell portion, and wherein the shell portion is at least generally symmetrical about a median plane, and said shell portion having two gas inlet orifices disposed one on each side of the median plane, said shell portion further comprising:
- an attachment mechanism formed integrally with each orifice of the shell portion;
- and
- a swivel inlet adapted to be connected to each attachment mechanism and defining a flow passage through said orifice, said swivel inlet comprising a hollow cylindrical inlet tube having an elbow portion, and wherein said swivel inlet is rotatable around the axis of said attachment mechanism.
Dependencies are inferred from the claim text.