Ventilation mask with integrated piloted exhalation valve
First Claim
1. A respiratory assistance system, comprising:
- a flow generator;
a nasal pillows mask including a piloted exhalation valve; and
a fluid conduit fluidly coupling the flow generator to the nasal pillows mask, and comprising;
a tri-lumen tube defining a gas delivery lumen, a valve pilot lumen and a pressure sensing lumen which are each fluidly coupled to the flow generator;
a first bi-lumen tube defining a gas delivery lumen which is fluidly coupled to and extends between the gas delivery lumen of the tri-lumen tube and the nasal pillows mask, and a pressure sensing lumen which is fluidly coupled to and extends between the pressure sensing lumen of the tri-lumen tube and the nasal pillows mask; and
a second bi-lumen tube defining a gas delivery lumen which is fluidly coupled to and extends between the gas delivery lumen of the tri-lumen tube and the nasal pillows mask, and a valve pilot lumen which is fluidly coupled to and extends between the valve pilot lumen of the tri-lumen tube and the nasal pillows mask.
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Accused Products
Abstract
In accordance with the present disclosure, there is provided 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 of the present disclosure 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 disclosure may further include a heat and moisture exchanger (HME) which is integrated therein.
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Citations
20 Claims
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1. A respiratory assistance system, comprising:
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a flow generator; a nasal pillows mask including a piloted exhalation valve; and a fluid conduit fluidly coupling the flow generator to the nasal pillows mask, and comprising; a tri-lumen tube defining a gas delivery lumen, a valve pilot lumen and a pressure sensing lumen which are each fluidly coupled to the flow generator; a first bi-lumen tube defining a gas delivery lumen which is fluidly coupled to and extends between the gas delivery lumen of the tri-lumen tube and the nasal pillows mask, and a pressure sensing lumen which is fluidly coupled to and extends between the pressure sensing lumen of the tri-lumen tube and the nasal pillows mask; and a second bi-lumen tube defining a gas delivery lumen which is fluidly coupled to and extends between the gas delivery lumen of the tri-lumen tube and the nasal pillows mask, and a valve pilot lumen which is fluidly coupled to and extends between the valve pilot lumen of the tri-lumen tube and the nasal pillows mask. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A respiratory assistance system, comprising:
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a flow generator; a nasal pillows mask including a piloted exhalation valve; and a fluid conduit fluidly coupling the flow generator to the nasal pillows mask, and comprising; a main bi-lumen tube defining a gas delivery lumen and a pressure sensing lumen which are each fluidly coupled to the flow generator; a first bi-lumen tube defining a gas delivery lumen which is fluidly coupled to and extends between the gas delivery lumen of the main bi-lumen tube and the nasal pillows mask, and a pressure sensing lumen which is fluidly coupled to and extends between the pressure sensing lumen of the main bi-lumen tube and the nasal pillows mask; and a second bi-lumen tube defining a gas delivery lumen which is fluidly coupled to and extends between the gas delivery lumen of the main bi-lumen tube and the nasal pillows mask, and a valve pilot lumen which is fluidly coupled to and extends between the gas delivery lumen of the main bi-lumen tube and the nasal pillows mask. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A respiratory assistance system, comprising:
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a flow generator; a nasal pillows mask including; a cushion defining an internal fluid chamber, a valve pilot lumen, at least one gas delivery lumen which fluidly communicates with the fluid chamber, and a pressure sensing lumen which fluidly communicates with the fluid chamber; and a piloted exhalation valve cooperatively engaged to the cushion in a manner wherein the valve pilot lumen is fluidly coupled thereto, the exhalation valve being fluidly coupled to the fluid chamber; a fluid conduit fluidly coupling the flow generator to the nasal pillows mask, the fluid conduit being configured in manner wherein the at least one gas delivery lumen, the valve pilot lumen, and the pressure sensing lumen of the nasal pillows mask are each fluidly coupled to discrete portions of the fluid conduit, and fluid pressure introduced into the valve pilot lumen varies from that introduced into the gas delivery lumen in accordance with at least one prescribed functional parameter of the valve. - View Dependent Claims (20)
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Specification