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US 7,011,090 B2Granted
Elbow for mask assembly
AssigneeResMed Limited
InventorsJoanne E. Drew, Memduh Guney, Amal S. Amarasinghe, Perry D. Lithgow, Anthony M Ging, Borivoje Ljubojevic, Donald Darkin, Grahame B Aston
Life of this patent
Estimating the term…
Abstract
An elbow assembly for use in a respiratory mask, which includes an elbow, an inlet port, an exhaust port, and a baffle separating the inlet port from the exhaust port. A mask assembly includes a cushion comprising at least one gusset and an aperture for connection to the elbow assembly.
Claims61
An elbow assembly for a respiratory mask comprising an elbow, wherein the elbow comprises:
- a) a first end portion comprising a surface adapted to engage a surface of a gas delivery tube;
- and
- b) a second end portion to be provided to the mask,
- wherein the elbow further defines:
- i) an inlet port formed in the second end portion to deliver incoming gas in a first direction to a nasal breathing cavity defined by the mask, and
- ii) an exhaust port formed in the second end portion and separated from the inlet port by at least one baffle, the exhaust port having an entry side positioned adjacent the inlet port,
- wherein the baffle has at least one generally curved portion, as viewed along the second end, and the baffle is configured to direct exhaust gas away from the nasal breathing cavity in a second direction that is substantially opposite to the first direction.
4 more elements
An elbow assembly for a respiratory mask comprising an elbow, wherein the elbow comprises:
- a) a first end portion comprising a surface adapted to engage a surface of a gas delivery tube;
- and
- b) a second end portion provided to the mask,
- wherein the elbow further defines:
- i) an inlet port to deliver incoming gas in a first direction to a nasal breathing cavity defined by the mask, and
- ii) an exhaust port separated from the inlet port by at least one baffle,
- wherein the baffle further comprises a protrusion adapted to protrude into a breathing cavity of the mask.
4 more elements
An elbow assembly for a respiratory mask comprising an elbow, wherein the elbow comprises:
- a) a first end portion comprising a surface adapted to engage a surface of a gas delivery tube;
- and
- b) a second end portion provided to the mask,
- wherein the elbow further defines:
- i) an inlet port to deliver incoming gas in a first direction to a nasal breathing cavity defined by the mask, and
- ii) an exhaust port separated from the inlet port by at least one baffle,
- wherein the baffle has at least one generally curved portion, as viewed along the second end, and the baffle is configured to direct exhaust gas away from the nasal breathing cavity in a second direction that is substantially opposite to the first direction, and
- wherein the second end portion of the elbow further comprises:
- iii) a resilient collar that substantially surrounds a mating portion of the second end to define a receiving space between the collar and the mating portion,
- and wherein the collar is configured to flex outwardly upon entry of a flange, formed on the mask, into the receiving space until the second end portion reaches an operative position in which the collar flexes inwardly by virtue of the resiliency thereof so as to lock the flange with respect to the collar and thereby detachably couple the elbow to the mask.
7 more elements
An elbow assembly for a respiratory mask comprising an elbow, wherein the elbow comprises:
- a) a first end portion comprising a surface adapted to engage a surface of a gas delivery tube;
- and
- b) a second end portion provided to the mask,
- wherein the elbow further defines:
- i) an inlet port to deliver incoming gas in a first direction to a nasal breathing cavity defined by the mask, and
- ii) an exhaust port separated from the inlet port by at least one baffle, further comprising:
- c) a removable vent cover detachably connected to the elbow, wherein the vent cover includes a main body and at least one vent aperture for gas washout,
- wherein the baffle has at least one generally curved portion, as viewed along the second end, and the baffle is configured to direct exhaust gas away from the nasal breathing cavity in a second direction that is substantially opposite to the first direction.
5 more elements
A respiratory mask assembly comprising:
- a) a mask frame comprising at least one aperture and a first baffle portion provided adjacent the aperture,
- b) a cushion, and
- c) an elbow assembly comprising:
- 1) a first end portion comprising a surface adapted to engage a surface of a gas delivery tube;
- and
- 2) a second end portion provided to the mask, wherein the elbow assembly defines:
- i) an inlet port to deliver incoming gas in a first direction to a nasal breathing cavity defined by the mask, and
- ii) an exhaust port separated from the inlet port by at least a second baffle portion,
- wherein the first and second baffle portions, when the elbow assembly is coupled to the mask frame, are configured to direct exhaust gas away from the nasal breathing cavity in a second direction that is substantially opposite to the first direction.
6 more elements
A respiratory mask assembly comprising:
- a) a mask frame further comprising at least one aperture defined by a ring,
- b) a cushion, and
- c) an elbow assembly comprising:
- 1) a first end portion compiling a surface adapted to engage a surface of a gas delivery tube;
- and
- 2) a second end portion provided to the mask,
- wherein the elbow defines:
- i) an inlet port to deliver incoming gas in a first direction to a nasal breathing cavity defined by the mask, and
- ii) an exhaust port separated from the inlet port by at least one baffle portion,
- wherein the baffle has at least one generally curved portion, as viewed along the second end, and the baffle is configured to direct exhaust gas away from the nasal breathing cavity in a second direction that is substantially opposite to the first direction, and
- wherein the ring further comprises an inner ring.
8 more elements
A respiratory mask assembly comprising:
- a) a mask frame comprising at least one aperture,
- b) a cushion, and
- c) an elbow assembly comprising:
- 1) a first end portion comprising a surface adapted to engage a surface of a gas delivery tube;
- and
- 2) a second end portion provided to the mask,
- wherein the elbow assembly defines:
- i) a conduit portion to deliver incoming gas in a first direction to a nasal breathing cavity defined by the mask, and
- ii) an exhaust port separated from the conduit portion by at least one baffle provided adjacent the mask frame aperture,
- wherein the baffle is non-planar and configured to guide exhaust gas from the aperture of the mask frame towards a vent to atmosphere.
7 more elements
Dependencies are inferred from the claim text.