Ventilation mask with integrated piloted exhalation valve
First Claim
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1. A ventilation mask, comprising:
- a housing defining an interior chamber and a valve pilot lumen; and
an exhalation valve cooperatively engaged to the housing and fluidly coupled to the valve pilot lumen;
the exhalation valve being piloted in a manner which facilitates the selective movement thereof from an open position to which it is normally biased and wherein at least a portion of the interior chamber is vented to ambient air, to a closed position wherein fluid flow between the interior chamber and ambient air is at least partially obstructed thereby, the valve pilot lumen being adapted to selectively apply a pilot fluid pressure to the exhalation valve in a manner facilitating the movement thereof.
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Abstract
A mask for achieving positive pressure mechanical ventilation (inclusive of CPAP, ventilator support, critical care ventilation, emergency applications), and a method for a operating a ventilation system including such mask. The mask includes a piloted exhalation valve that is used to achieve the target pressures/flows to the patient. The pilot for the valve may be pneumatic and driven from the gas supply tubing from the ventilator. The pilot may also be a preset pressure derived in the mask, a separate pneumatic line from the ventilator, or an electro-mechanical control. The mask of the present invention may further include a heat and moisture exchanger (HME) which is integrated therein.
336 Citations
19 Claims
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1. A ventilation mask, comprising:
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a housing defining an interior chamber and a valve pilot lumen; and an exhalation valve cooperatively engaged to the housing and fluidly coupled to the valve pilot lumen; the exhalation valve being piloted in a manner which facilitates the selective movement thereof from an open position to which it is normally biased and wherein at least a portion of the interior chamber is vented to ambient air, to a closed position wherein fluid flow between the interior chamber and ambient air is at least partially obstructed thereby, the valve pilot lumen being adapted to selectively apply a pilot fluid pressure to the exhalation valve in a manner facilitating the movement thereof. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A ventilation mask, comprising:
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a housing defining an interior chamber, a valve pilot lumen, and at least one gas delivery lumen which fluidly communicates with the interior chamber; and an exhalation valve cooperatively engaged to the housing in a manner wherein the valve pilot lumen is fluidly coupled thereto, the exhalation valve being fluidly coupled to the interior chamber; the exhalation valve being piloted in a manner which facilitates the selective movement thereof from an open position to which it is normally biased and wherein at least a portion of the interior chamber is vented to ambient air to a closed position wherein fluid flow between the interior chamber and ambient air is at least partially obstructed thereby. - View Dependent Claims (17, 18, 19)
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Specification