Mask system
First Claim
1. An elbow assembly for a patient interface configured to deliver positive pressure gas for respiratory therapy to a patient to treat sleep disordered breathing, the elbow assembly comprising:
- a main body with a first end, a second end and a bend between the first and second ends, the first end being adapted to connect to the patient interface and the second end being adapted to connect to an air delivery tube;
an opening in a wall of the main body;
a support member that sealingly covers the opening in the wall and is securable to the main body, the support member comprising a first end and a second end opposite the first end, the first end of the support member having a first arcuate cross-section, the second end of the support member having a second arcuate cross-section, the first and second arcuate cross-sections having different radii of curvature, opposing sides of the arcuate shapes of the first and second arcuate cross-sections terminating at a pair of lateral sides extending from the first end to the second end;
an anti-asphyxia valve (AAV) attached to the support member and including a flap portion;
a port arranged and sized to be closed by the flap portion when the positive pressure gas flows through the main body, from the second end of the main body to the first end of the main body; and
a rib attached to the support member between the pair of lateral sides and spaced apart from the pair of lateral sides, a smallest dimension of the rib being in a direction perpendicular to the flow of gas entering the elbow assembly,wherein a recessed outer surface of the main body is configured to engage an inner surface of the support member when the support member is mounted on the main body.
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0 Petitions
Accused Products
Abstract
A mask system for use between a patient and device to deliver a breathable gas to the patient includes a mouth cushion, a pair of nasal prongs, an elbow, and a headgear assembly. The mouth cushion is structured to sealingly engage around an exterior of a patient'"'"'s mouth in use, and the pair of nasal prongs are structured to sealingly communicate with nasal passages of a patient'"'"'s nose in use. The elbow delivers breathable gas to the patient. The headgear assembly maintains the mouth cushion and the nasal prongs in a desired position on the patient'"'"'s face. The headgear assembly provides a substantially round crown strap that cups the parietal bone and occipital bone of the patient'"'"'s head in use.
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Citations
35 Claims
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1. An elbow assembly for a patient interface configured to deliver positive pressure gas for respiratory therapy to a patient to treat sleep disordered breathing, the elbow assembly comprising:
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a main body with a first end, a second end and a bend between the first and second ends, the first end being adapted to connect to the patient interface and the second end being adapted to connect to an air delivery tube; an opening in a wall of the main body; a support member that sealingly covers the opening in the wall and is securable to the main body, the support member comprising a first end and a second end opposite the first end, the first end of the support member having a first arcuate cross-section, the second end of the support member having a second arcuate cross-section, the first and second arcuate cross-sections having different radii of curvature, opposing sides of the arcuate shapes of the first and second arcuate cross-sections terminating at a pair of lateral sides extending from the first end to the second end; an anti-asphyxia valve (AAV) attached to the support member and including a flap portion; a port arranged and sized to be closed by the flap portion when the positive pressure gas flows through the main body, from the second end of the main body to the first end of the main body; and a rib attached to the support member between the pair of lateral sides and spaced apart from the pair of lateral sides, a smallest dimension of the rib being in a direction perpendicular to the flow of gas entering the elbow assembly, wherein a recessed outer surface of the main body is configured to engage an inner surface of the support member when the support member is mounted on the main body. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An elbow assembly for a patient interface configured to deliver positive pressure gas for respiratory therapy to a patient to treat sleep disordered breathing, the elbow assembly comprising:
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a main body with a first end portion, a second end portion and an intermediate portion, the first end portion being adapted to connect to the patient interface, the second end portion being adapted to connect to an air delivery tube and an outer surface of the intermediate portion defining a bent portion of the elbow assembly that includes a bend; an opening in a sidewall of the main body; an anti-asphyxia valve (AAV) positioned within the main body adjacent the opening in the sidewall and including a flap portion; a port arranged and sized to be closed by the flap portion when the positive pressure gas flows through the main body; a support member configured to sealingly cover the opening in the sidewall, the support member having a first end and a second end opposite the first end, the first end being distal to the air delivery tube; and a rib attached to the support member, a smallest dimension of the rib being in a direction perpendicular to the flow of gas entering the elbow assembly, wherein the bend of the intermediate portion is continued by the support member and a shape of an outer surface of the first end of the support member matches a shape of an outer surface of the intermediate portion, wherein the first end of the support member has a first arcuate cross-section and the second end of the support member has a second arcuate cross-section, the first and second arcuate cross-sections having different radii of curvature, wherein opposing sides of the arcuate shapes of the first and second arcuate cross-sections terminate at a pair of lateral sides extending from the first end to the second end, wherein the rib is located between the pair of lateral sides and is spaced apart from the pair of lateral sides, and wherein a recessed outer surface of the main body is configured to engage an inner surface of the support member when the support member is mounted on the main body. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. An elbow assembly for a patient interface configured to deliver positive pressure gas for respiratory therapy to a patient to treat sleep disordered breathing, the elbow assembly comprising:
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a main body with a first end portion, a second end portion and an intermediate portion, the first end portion being adapted to connect to the patient interface, the second end portion being adapted to connect to an air delivery tube and an outer surface of the intermediate portion defining a bend in the elbow assembly; an opening in a sidewall of the main body; an anti-asphyxia valve (AAV) positioned within the main body at the opening in the sidewall and including a flap portion; a port arranged and sized to be closed by the flap portion when the positive pressure gas flows through the main body; a support member configured to sealingly cover the opening in the sidewall, the support member being arranged so that the bend of the intermediate portion is continued by the support member, a first end of the support member having an arcuate shape matching an arcuate shape of an adjacent portion of the intermediate portion only when the support member is secured to the main body in a particular orientation, opposing sides of the arcuate shape of the first end terminating at a pair of lateral sides; and a rib attached to the support member between the pair of lateral sides and spaced apart from the pair of lateral sides, a smallest dimension of the rib being in a direction perpendicular to the flow of gas entering the elbow assembly, wherein a recessed outer surface of the main body is configured to engage an inner surface of the support member when the support member is mounted on the main body. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33, 34, 35)
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Specification