Valve for use with inhalation/exhalation respiratory phase detection circuit
First Claim
Patent Images
1. A valve for controlling air flow within a respiratory circuit, the valve comprising:
- a valve base;
a valve element cover secured to said valve base, said valve element cover having an inlet tube configured to connect to a source of air and an outlet tube configured to be placed in fluid communication with an airway of a patient; and
a rotatable valve element, said rotatable valve element configured to rotate between a closed position, an open position and intermediate positions between the open and closed positions, said rotatable valve element and said valve base forming at least one exhaust port;
wherein said rotatable valve element blocks access from the inlet tube to both the outlet tube and the exhaust port and wherein the outlet tube is in fluid communication with the exhaust port when said rotatable valve element is configured in the closed position.
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Abstract
An apparatus for controlling the pressure of a respiratory gas delivered to a patient includes a phase detection circuit for determining the inhalation and exhalation phases of a patient'"'"'s respiratory cycle. More particularly, a valving apparatus for controlling air flow within the breathing circuit which is connected to the phase detection circuit.
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Citations
6 Claims
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1. A valve for controlling air flow within a respiratory circuit, the valve comprising:
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a valve base; a valve element cover secured to said valve base, said valve element cover having an inlet tube configured to connect to a source of air and an outlet tube configured to be placed in fluid communication with an airway of a patient; and a rotatable valve element, said rotatable valve element configured to rotate between a closed position, an open position and intermediate positions between the open and closed positions, said rotatable valve element and said valve base forming at least one exhaust port; wherein said rotatable valve element blocks access from the inlet tube to both the outlet tube and the exhaust port and wherein the outlet tube is in fluid communication with the exhaust port when said rotatable valve element is configured in the closed position. - View Dependent Claims (2, 3, 4, 5)
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6. A valve for controlling air flow within a respiratory circuit, the valve comprising:
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a valve base having a plurality of recesses; a valve cover secured to said valve base, said valve cover configured with an inlet tube, an outlet tube, and a plurality of first valve fingers extending away from the inlet tube; and a valve element rotatably disposed on said valve base and rotatably disposed within said valve cover, said valve element having a plurality of exhaust ports configured to register with the recesses of said valve base as the valve element is rotated, said valve element further having a plurality of second valve fingers having spaces therebetween, wherein rotation of the valve element causes the second valve fingers or spaces to move into registration with the first valve fingers to open or close fluid communication from the inlet tube to the outlet tube and to the exhaust ports.
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Specification