Mask system
AssigneeResMed Limited
InventorsMatthew Eves, Errol Savio Alex D'Souza, Jamie Graeme Wehbeh, Rupert Christian Scheiner
Life of this patent
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Abstract
A mask system includes a cushion adapted to seal with a face of a patient. In one form an unobtrusive full-face masks system is provided which is comfortable and has a wide fit range. The cushion may include a sealing structure (127-10) and a supporting structure (127-20). The supporting structure may include gaps or spacing in a nasal bridge region (NBR) and/or a lip region CHN.
Claims37
A mask system for providing respiratory therapy to the airways of a person, the mask system being constructed and arranged to be in surrounding sealing relationship with the nose and mouth of the person in use, the mask system including a cushion, said cushion adapted to form a seal on the face of the person in a nasal bridge region of the face, a side of nose region of the face, a mouth corner region of the face, and a lower lip or chin region of the face, and said cushion further including at least one lateral stabilising portion adapted to direct a force against the side of the nose in the region of the nasal bridge,
- wherein the cushion comprises a facial flap and a backup band,
- wherein the backup band extends at least part of the way around the perimeter of the cushion,
- wherein the backup band includes at least one gap therein to leave at least one portion of the facial flap unsupported, and the at least one gap is provided in the nasal bridge region and the lower lip or chin region,
- wherein the cushion is movably adaptable between (i) a first configuration in which the cushion is disengaged from the person's face, and (ii) a second configuration in which the cushion is engaged with the person's face to form said seal in use,
- wherein a nasal bridge region of the facial flap includes a valley when viewed from the top of the cushion in the first configuration constructed and arranged to accommodate and be complementary to the shape of the nasal bridge region of the face,
- wherein a lower lip or chin region of the facial flap includes a valley when viewed from the bottom of the cushion in the first configuration constructed and arranged to accommodate and be complementary to the shape of the lower lip or chin region of the face, and
- wherein the valley in the nasal bridge region, when viewed from the top of the cushion in the first configuration, includes a concave, face-contacting surface relative to adjacent portions each including a convex, face-contacting surface.
A cushion for providing a sealed interface between a face and a frame of a respiratory mask system for delivery of a supply of air at positive pressure to the entrance of the airways of a person, the cushion comprising a sealing portion including:
- a nasal bridge portion adapted to form a seal on a nasal bridge of the person;
- at least one lateral stabilising portion adapted to provide a force on a side of a nose of the person;
- a corner of mouth region;
- and
- a lower lip region;
- the cushion further comprising a wall portion located between a retention feature of the cushion and the sealing portion, the wall portion having a first cross-sectional profile in a corner of mouth region, and a second cross-sectional profile in a side of nose region,
- wherein the first cross-sectional profile has a sickle or question-mark shape and the second cross-sectional profile has a J-shape,
- wherein the sickle or question-mark shape includes a base portion adjacent the retention feature and an upper portion, the upper portion having an outer edge that is laterally offset towards an outside of the base portion,
- wherein the J-shape includes an exterior surface having a concave curvature along its entire length, and
- wherein the wall portion includes a flap or extending portion in each side of nose region, each flap or extending portion having a length measured from a tip or free end thereof to a connection of the flap or extending portion to the retention feature of the cushion, and the length of the flap or extending portion is longer than a corresponding length of the wall portion in each corner of mouth region.
Dependencies are inferred from the claim text.