Disposable mask system
First Claim
Patent Images
1. A mask assembly for delivering a flow of breathable gas to a patient, comprising:
- a frame defining a breathing chamber;
an elbow connected to the frame, the elbow comprising an inlet conduit configured to deliver the flow of breathable gas to the frame, a cylindrical inner tube, a wall member surrounding the cylindrical inner tube, and at least one aperture adjacent the wall member; and
a valve member provided between the frame and the elbow, the valve member being disposed between the wall member and the cylindrical inner tube, wherein the valve member is configured to allow breathing of ambient air through the at least one aperture of the elbow into the breathing chamber and to prevent a back flow of gas into the inlet conduit of the elbow in an absence of the flow of breathable gas and to permit the flow of breathable gas into the breathing chamber when delivered by the inlet conduit.
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Accused Products
Abstract
A mask system includes a frame, cushion, cushion clip, swivel elbow, headgear and/or headgear clips that are configured for use in a clinical or hospital environment. One or more components of the mask system are configured to promote single patient use, e.g., by providing an age indicator and/or preventing disassembly and/or cleaning, etc.
117 Citations
27 Claims
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1. A mask assembly for delivering a flow of breathable gas to a patient, comprising:
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a frame defining a breathing chamber; an elbow connected to the frame, the elbow comprising an inlet conduit configured to deliver the flow of breathable gas to the frame, a cylindrical inner tube, a wall member surrounding the cylindrical inner tube, and at least one aperture adjacent the wall member; and a valve member provided between the frame and the elbow, the valve member being disposed between the wall member and the cylindrical inner tube, wherein the valve member is configured to allow breathing of ambient air through the at least one aperture of the elbow into the breathing chamber and to prevent a back flow of gas into the inlet conduit of the elbow in an absence of the flow of breathable gas and to permit the flow of breathable gas into the breathing chamber when delivered by the inlet conduit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A mask assembly comprising:
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a frame; an elbow provided to the frame and including an inlet conduit; and a valve member provided between the frame and the elbow, the valve member being configured to allow breathing of ambient air and to prevent back flow of gas towards the inlet conduit of the elbow in an unpressurized state, wherein the elbow includes a center tube portion and an inner tube suspended from a dome portion of the elbow. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27)
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Specification