Breathing assistance apparatus
First Claim
Patent Images
1. A mask assembly for delivering positive airway pressure to a user, the mask comprising:
- a rigid mask body comprising a central portion, an outer surface having at least a curved portion and a mask body periphery, the mask body periphery comprising a left peripheral side and a right peripheral side;
a prong part comprising a hollow body removably sealed to the rigid mask body defining an enclosed space, a prong part periphery extending along a periphery of the hollow body, and first and second nasal prongs extending from the hollow body, the periphery of the prong part removably sealed to the mask body periphery in use, the prong part being formed as a single piece and being more flexible than the rigid mask body;
an inspiratory conduit connected to the rigid mask body configured to deliver pressurized gases into the enclosed space defined by the rigid mask body and the prong part for inhalation by a user in use;
a headgear arrangement configured to maintain the prong part in a position with the first and second prongs against a user'"'"'s nares in use, the headgear arrangement comprising first and second headgear extensions and a headgear strap;
the first headgear extension having a distal end connected to the left peripheral side of the rigid mask body on a distal side of the prong part at a location spaced from a user in use, and a proximal end disposed proximally toward a left side of a user'"'"'s face in use, the first headgear extension comprising a first portion and a second portion, the first portion of the first headgear extension comprising the distal end of the first headgear extension and extending at least along a first lateral direction extending laterally away from the left peripheral side of the rigid mask body and beyond an outer periphery of the prong part, the second portion of the first headgear extension extending from the first portion, along a second direction extending more proximally toward the user than the first direction in use;
the second headgear extension having a distal end connected to the right peripheral side of the rigid mask body on the distal side of the prong part at a location spaced from a user in use, and a proximal end disposed proximally toward a right side of a user'"'"'s face in use, the second headgear extension comprising a first portion and a second portion, the first portion of the second headgear extension comprising the distal end of the second headgear extension and extending at least along a third lateral direction extending laterally away from the rigid mask body and beyond the outer periphery of the prong part, the second portion of the second headgear extension extending from the first portion, along a fourth direction extending more proximally toward the user than the third direction in use;
the headgear strap comprising a flexible tube having first and second ends, the first end connected to the first headgear extension at a first location between the distal end and the proximal ends of the first headgear extension and a second end connected to the second headgear extension at a second location disposed between the proximal and distal ends of the second headgear extension; and
at least a first bias flow vent disposed on the curved portion of the outer surface of the rigid mask body, the first bias flow vent being configured to vent a gas from the enclosed space between the rigid mask body and the prong part, to an outside of the rigid mask body during use.
1 Assignment
Litigations
1 Petition
Accused Products
Abstract
A nasal cannula can be shaped to fit within a user'"'"'s nares, where the nasal cannula includes at least one prong allowing high flow delivery of humidified gases and creates positive airway pressure in the patient'"'"'s airway. The prongs can have angled ends such that, in use, gases flowing through the prongs are directed to the user'"'"'s nasal passages. The nasal cannula body can be partially swiveling and preferably has a ball joint connector. The nasal cannula can have at least one flared end prong that preferably seals within a patient'"'"'s nare.
250 Citations
19 Claims
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1. A mask assembly for delivering positive airway pressure to a user, the mask comprising:
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a rigid mask body comprising a central portion, an outer surface having at least a curved portion and a mask body periphery, the mask body periphery comprising a left peripheral side and a right peripheral side; a prong part comprising a hollow body removably sealed to the rigid mask body defining an enclosed space, a prong part periphery extending along a periphery of the hollow body, and first and second nasal prongs extending from the hollow body, the periphery of the prong part removably sealed to the mask body periphery in use, the prong part being formed as a single piece and being more flexible than the rigid mask body; an inspiratory conduit connected to the rigid mask body configured to deliver pressurized gases into the enclosed space defined by the rigid mask body and the prong part for inhalation by a user in use; a headgear arrangement configured to maintain the prong part in a position with the first and second prongs against a user'"'"'s nares in use, the headgear arrangement comprising first and second headgear extensions and a headgear strap; the first headgear extension having a distal end connected to the left peripheral side of the rigid mask body on a distal side of the prong part at a location spaced from a user in use, and a proximal end disposed proximally toward a left side of a user'"'"'s face in use, the first headgear extension comprising a first portion and a second portion, the first portion of the first headgear extension comprising the distal end of the first headgear extension and extending at least along a first lateral direction extending laterally away from the left peripheral side of the rigid mask body and beyond an outer periphery of the prong part, the second portion of the first headgear extension extending from the first portion, along a second direction extending more proximally toward the user than the first direction in use; the second headgear extension having a distal end connected to the right peripheral side of the rigid mask body on the distal side of the prong part at a location spaced from a user in use, and a proximal end disposed proximally toward a right side of a user'"'"'s face in use, the second headgear extension comprising a first portion and a second portion, the first portion of the second headgear extension comprising the distal end of the second headgear extension and extending at least along a third lateral direction extending laterally away from the rigid mask body and beyond the outer periphery of the prong part, the second portion of the second headgear extension extending from the first portion, along a fourth direction extending more proximally toward the user than the third direction in use; the headgear strap comprising a flexible tube having first and second ends, the first end connected to the first headgear extension at a first location between the distal end and the proximal ends of the first headgear extension and a second end connected to the second headgear extension at a second location disposed between the proximal and distal ends of the second headgear extension; and at least a first bias flow vent disposed on the curved portion of the outer surface of the rigid mask body, the first bias flow vent being configured to vent a gas from the enclosed space between the rigid mask body and the prong part, to an outside of the rigid mask body during use. - View Dependent Claims (2, 3, 4, 5)
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6. A mask assembly for delivering positive airway pressure to a user, the mask comprising:
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a rigid mask body comprising a central portion, an outer surface having at least a curved portion; an inspiratory conduit connected to the rigid mask body; a prong part comprising a hollow body and first and second nasal prongs extending from the hollow body, the hollow body removably connected to the mask body; a first headgear extension having a distal end connected to the rigid mask body on a distal side of the prong part at a location spaced from a user in use, and a proximal end disposed proximally toward a user in use, the first headgear extension comprising a first portion and a second portion, the first portion of the first headgear extension comprising the distal end of the first headgear extension and extending at least along a first lateral direction extending laterally away from the rigid mask body and beyond an outer periphery of the prong part, the second portion of the first headgear extension extending from the first portion, along a second direction extending more proximally toward the user than the first direction in use; a second headgear extension having a distal end connected to the rigid mask body on the distal side of the prong part at a location spaced from a user in use, and a proximal end disposed proximally toward a user in use, the second headgear extension comprising a first portion and a second portion, the first portion of the second headgear extension comprising the distal end of the second headgear extension and extending at least along a third lateral direction extending laterally away from the rigid mask body and beyond the outer periphery of the prong part, the second portion of the second headgear extension along a fourth direction more proximally toward the user than the third direction in use; and a headgear strap connected to the first headgear extension at a first location between the distal end and the proximal ends of the first headgear extension and connected to the second headgear extension at a second location disposed between the proximal and distal ends of the second headgear extension. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A mask assembly for delivering positive airway pressure to a user, the mask comprising:
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a rigid mask body; an inspiratory conduit connected to the rigid mask body; a prong part comprising a hollow body and first and second nasal prongs extending from the hollow body, the hollow body removably connected to the mask body; a first headgear extension having a distal end connected to the rigid mask body on a distal side of the prong part at a location spaced from a user in use, and a proximal end disposed proximally toward a user in use, the first headgear extension extending from the rigid mask body, at least along a first lateral direction extending laterally away from the rigid mask body and beyond an outer periphery of the prong part and along a second direction extending more proximally toward the user than the first direction in use; and a second headgear extension having a distal end connected to the rigid mask body on the distal side of the prong part at a location spaced from a user in use, and a proximal end disposed proximally toward a user in use, the second headgear extension extending from the rigid mask body at least along a third lateral direction extending laterally away from the rigid mask body and beyond the outer periphery of the prong part and along a fourth direction more proximally toward the user than the third direction in use. - View Dependent Claims (18, 19)
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Specification