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US 6,718,979 B1Granted
Oxygen mask assembly
AssigneeDHD Healthcare Corporation
InventorsDanny Britt, Michael Henigman, Kurt Meyer
Life of this patent
Estimating the term…
Abstract
An oxygen mask assembly including an oxygen dilutor assembly with air inlet apertures located in a top wall thereof for diluting the oxygen flowing therethrough. In one embodiment, the mask assembly additionally includes an air reservoir bag assembly, a one-way inhalation valve for maintaining continuous positive airway pressure in the mask and a pressure valve on the mask for adjusting the air pressure in the mask.
Claims24
An oxygen mask assembly comprising;
- a mask including a body defining an interior;
- a flexible hose having one end operatively connected to said mask;
- and
- an oxygen dilutor including an outlet connected to the opposite end of said hose and an oxygen inlet adapted for connection to an oxygen source and extending generally perpendicularly outwardly from a top wall of said oxygen dilutor, said dilutor including an air inlet defined in the top wall including said oxygen inlet for diluting the oxygen flowing through said dilutor, said dilutor including a head having said top wall and defining an interior cavity, said top wall including an aperture therein, said dilutor further including a rotatable port covering said top wall of said head, said port including an aperture adapted for rotatable alignment with said aperture in said top wall to define said air inlet.
1 more element
An oxygen mask assembly comprising:
- a mask including a body defining an interior;
- a flexible hose having one end operatively connected to said mask;
- an oxygen dilutor including an outlet at a first end connected to the opposite end of said hose and an oxygen inlet at an opposite second end adapted for connection to an oxygen source and extending generally perpendicularly outwardly from a top wall of said oxygen dilutor, said dilutor including an air inlet defined in the top wall thereof including said oxygen inlet for diluting the oxygen flowing through said dilutor;
- and
- a jet extending unitarily outwardly from said top wall of said head which defined said oxygen inlet and includes an interior conduit in fluid flow communication with said cavity in said head at one end and said oxygen source at the other end, said jet additionally including a sleeve extending upwardly therefrom and surrounding said jet for rotatable movement relative to said port and said jet, said sleeve including a threaded inner surface surrounding and spaced from said jet and adapted for threaded engagement with an oxygen supply hose.
2 more elements
An oxygen mask assembly comprising:
- a mask including a body defining an interior;
- a flexible hose having one end operatively connected to said mask;
- and
- an oxygen dilutor including an outlet connected to the opposite end of said hose and an oxygen inlet adapted for connection to an oxygen source and extending generally perpendicular outwardly from a top wall of said oxygen dilutor, said dilutor including an air inlet defined in the top wall including said oxygen inlet for diluting the oxygen flowing through said dilutor;
- and a pressure valve assembly operably associated with and connected to said mask, said pressure valve assembly including a body having an interior chamber defining an inlet in fluid flow communication with the interior of said mask and an outlet in fluid flow communication with the ambient air, said pressure valve assembly further including a plunger covering said inlet, a cap threadingly secured to the top of said pressure valve assembly and a spring abutting said plunger and said cap respectively whereby the rotation of said cap results in the movement of said plunger towards or away from said inlet for adjusting the air pressure in said mask.
2 more elements
An oxygen mask assembly comprising:
- a mask including a frame defining an interior;
- a flexible circuit hose having one end operably connected to said mask;
- and
- an oxygen dilutor assembly including a top wall defining an air inlet aperture and an oxygen inlet jet extending generally perpendicularly outwardly from said top wall defining said air inlet aperture and adapted for connection to an oxygen source, said dilutor assembly further including an outlet extending into the opposite end of said circuit hose, said dilutor assembly including a head and a top wall together defining an interior chamber in fluid flow communication with said oxygen source, said top wall including an aperture defining an inlet adapted to allow the entry of ambient air into said chamber for diluting the oxygen in said chamber, said dilutor assembly further including a port covering said top wall and including an aperture therein, said port being rotatable relative to said head for bringing said apertures in said top wall of said head and said port respectively into registry to allow the entry of ambient air into said chamber.
1 more element
An oxygen dilutor assembly for use in an oxygen mask assembly, the oxygen dilutor assembly comprising:
- a head defining an interior cavity and including a top wall having an air aperture therein and an oxygen inlet jet in fluid flow communication with said interior cavity, said oxygen inlet jet extending outwardly from said top wall including said air aperture;
- a port rotatably secured to said top wall and including an aperture therein adapted for alignment with said air aperture in said top wall of said head to allow the entry of oxygen diluting air into said cavity, said port further including a sleeve rotatably secured to and surrounding and spaced from said jet and including a threaded inner surface;
- and
- an oxygen inlet hose including a plug adapted to be fitted over said jet and threadingly secured to said inner surface of said sleeve.
1 more element
An oxygen dilutor assembly for use in an oxygen mask assembly, the oxygen dilutor assembly comprising:
- a head defining an interior cavity and including a top wall having an aperture therein and an oxygen inlet jet in fluid flow communication with said interior cavity and extending generally outwardly from said top wall, said jet including a collar;
- a port rotatably secured to said top wall and including an aperture therein adapted for alignment with said aperture in said top wall of said head to allow the entry of oxygen diluting air into said cavity, said port further including a sleeve rotatably secured to and spaced from said jet and including a threaded inner surface and a hook-shaped finger extending circumferentially and unitarily outwardly from the threaded inner surface of said sleeve and between the sleeve and the jet defining a groove and fitting into and surrounding said collar;
- and
- an oxygen inlet hose including a plug adapted to be fitted over said jet and including an interior cavity defining a circumferentially extending radial collar which is fitted in said groove in said sleeve when said plug is threadingly secured to said sleeve.
1 more element
An oxygen dilutor assembly for use in an oxygen mask assembly, the oxygen dilutor assembly comprising:
- a head defining an interior cavity and including a top wall having an air aperture therein and an oxygen inlet jet in fluid flow communication with said interior cavity and extending generally outwardly from said top wall, said jet including a collar;
- a port rotatably secured to said top wall and including an aperture therein adapted for alignment with said air aperture in said top wall of said head to allow the entry of oxygen diluting air into said cavity, said port further including a sleeve rotatably secured to and spaced from said jet and including a threaded inner surface and a hook-shaped finger extending circumferentially and unitarily outwardly from the threaded inner surface of said sleeve and between the sleeve and the jet defining a groove and fitting into and surrounding said collar, said port further including a side wall surrounding said head and a notch extending along a portion thereof including opposed shoulders which cooperate and engage with a tab on the head to limit the amount which said port rotates relative to said head;
- and
- an oxygen inlet hose including a plug adapted to be fitted over said jet and including an interior cavity defining a circumferentially extending radial collar which is fitted in said groove in said sleeve when said plug is threadingly secured to said sleeve.
1 more element
An oxygen mask assembly comprising;
- a mask;
- a flexible hose having one end operatively connected to said mask;
- and
- an oxygen dilutor including an outlet connected to the opposite end of said hose and an oxygen inlet jet including a collar and adapted for connection to an oxygen inlet hose including a plug, said dilutor including an air inlet defined in a top wall thereof for diluting the oxygen flowing through said dilutor and a sleeve rotatably secured to and surrounding and spaced from said jet, said sleeve including a finger which fits into and surrounds said collar, said finger further defining a groove, said plug defining a radial collar which is fitted in said groove in said sleeve when said plug is threadingly secured to said sleeve.
1 more element
Dependencies are inferred from the claim text.