Respiratory assistance apparatus and method
First Claim
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1. A handheld breathing assistance device to reduce respiratory muscle fatigue in a user with obstructive lung disease, the device comprising:
- a deformable reservoir adaptable for containing pressurized breathing gas, at least a portion of the deformable reservoir being constructed and arranged to change shape to vary the volume of the pressurized breathing gas contained within the deformable reservoir;
a breathing interface for delivering pressurized breathing gas from said deformable reservoir to the airway of the user, the breathing interface being adaptable for fluid communication with the airway of the user, the breathing interface being further adaptable for fluid communication with the deformable reservoir;
at least one pressure relief valve to control the pressure of the gas contained in the deformable reservoir, the at least one pressure relief valve having an inlet and an outlet, the inlet being adaptable to be in fluid communication with the deformable reservoir, the outlet being adaptable to be in fluid communication with the atmosphere.
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Abstract
A hand-held apparatus that delivers pressurized breathing gas to the airway of a patient, thereby creating positive end expiratory pressure (PEEP) and reducing respiratory muscle fatigue. The apparatus includes a deformable reservoir, a breathing interface, and a pressure relief valve. The apparatus may include a means for creating fluid communication between the deformable reservoir and a source of pressurized breathing gas. The apparatus may also include an adjuster that allows a user to vary the pressure of the breathing gas contained in the deformable reservoir.
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Citations
34 Claims
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1. A handheld breathing assistance device to reduce respiratory muscle fatigue in a user with obstructive lung disease, the device comprising:
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a deformable reservoir adaptable for containing pressurized breathing gas, at least a portion of the deformable reservoir being constructed and arranged to change shape to vary the volume of the pressurized breathing gas contained within the deformable reservoir; a breathing interface for delivering pressurized breathing gas from said deformable reservoir to the airway of the user, the breathing interface being adaptable for fluid communication with the airway of the user, the breathing interface being further adaptable for fluid communication with the deformable reservoir; at least one pressure relief valve to control the pressure of the gas contained in the deformable reservoir, the at least one pressure relief valve having an inlet and an outlet, the inlet being adaptable to be in fluid communication with the deformable reservoir, the outlet being adaptable to be in fluid communication with the atmosphere. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A method of reducing respiratory muscle fatigue comprising:
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coupling the airway of a user in fluid communication with a breathing interface; accepting pressurized gas into a deformable reservoir that is in fluid communication with the breathing interface; allowing the deformable reservoir to expand to contain a desired volume of pressurized gas; delivering the pressurized gas to the airway of the user through the breathing interface; and venting the gas from the deformable reservoir when the pressure in the deformable reservoir exceeds a predetermined threshold. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33, 34)
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Specification