Pressure Reducing Vavle
First Claim
1. A pressure reducing valve, comprising:
- a valve body having a number of pressurized gas exhaust ports and a number of exhalation gas exhaust ports; and
an inner sleeve having a number of inner ports, wherein the inner sleeve is movable within the valve body between a closed position in which the inner ports are closed and the pressurized gas exhaust ports and the exhalation gas exhaust ports are open and an open position in which the inner ports are open and the pressurized gas exhaust ports and the exhalation gas exhaust ports are closed.
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Accused Products
Abstract
A pressure reducing valve for use in a system adapted to deliver a breathing gas to a patient. The pressure reducing valve is structured to communicate a flow of breathing gas to such a patient'"'"'s airway during an inspiratory phase. The pressure reducing valve is structured to isolate the flow of breathing gas from the patient'"'"'s airway and to “dump” the flow of breathing gas and a flow of exhalation gas to atmosphere during the expiratory phase. The flow of breathing gas is dumped to atmosphere through a first number of ports; whereas a flow of exhalation gas is dumped to atmosphere through a second number of ports. Because the flow of breathing gas remains isolated from the flow of exhalation gas, less effort is required by a patient during the expiratory phase.
78 Citations
25 Claims
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1. A pressure reducing valve, comprising:
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a valve body having a number of pressurized gas exhaust ports and a number of exhalation gas exhaust ports; and an inner sleeve having a number of inner ports, wherein the inner sleeve is movable within the valve body between a closed position in which the inner ports are closed and the pressurized gas exhaust ports and the exhalation gas exhaust ports are open and an open position in which the inner ports are open and the pressurized gas exhaust ports and the exhalation gas exhaust ports are closed. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A pressure reducing valve, comprising:
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a valve body having a patient interface end and a pressure generator end with at least two exhaust ports therebetween; and an inner sleeve movable within the valve body, wherein the inner sleeve is structured to communicate a flow of positive pressure gas from the pressure generator end to the patient interface end during an inspiratory phase, and wherein the inner sleeve is structured to divert the flow of positive pressure gas to a first one of the at least two exhaust ports and to communicate a flow of exhalation gas from the patient interface end to a second one of the at least two exhaust ports during the expiratory phase. - View Dependent Claims (9, 10, 11, 12)
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13. A method for providing a breathing gas to a patient, comprising:
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communicating the breathing gas through a patient circuit to an airway of such a patient during an inspiratory phase, wherein the patient circuit has at least a breathing gas exhaust port and an exhalation gas exhaust port; diverting the breathing gas away from the airway of such a patient through the breathing gas exhaust port during an expiratory phase; and directing an exhalation gas from the airway of such a patient through the exhalation gas exhaust port during the expiratory phase. - View Dependent Claims (14, 15, 16)
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17. In a system adapted to provide a regimen of respiratory therapy to a patient, the system including a patient circuit with a pressure reducing valve having a first exhaust port and a second exhaust port therein, a method, comprising:
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delivering the flow of breathing gas to the airway of such a patient through the patient circuit during an inspiratory phase; and diverting the flow of breathing gas away from the airway of such a patient through the first exhaust port while disposing of a flow of exhalation gas from the airway of such a patient through the second exhaust port during an exhalation phase, wherein the pressure reducing valve has a valve body and an inner sleeve, wherein delivering the flow of breathing gas includes employing the flow of breathing gas to move the inner sleeve within the valve body to an open position, and wherein diverting the flow of breathing gas while disposing of the flow of exhalation gas includes employing the flow of exhalation gas to move the inner sleeve within the valve body to a closed position. - View Dependent Claims (18, 19)
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20. An apparatus for delivering a flow of positive pressure gas to an airway of a patient, the apparatus comprising:
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a gas flow generator structured to produce the flow of positive pressure gas; a patient interface device structured to communicate the flow of positive pressure gas to the airway of such a patient; and a patient circuit structured to couple the gas flow generator to the patient interface device, wherein the patient circuit includes a pressure reducing valve with a valve body and an inner sleeve, wherein the valve body has at least two exhaust ports therein, wherein the inner sleeve is movable within the valve body, wherein the inner sleeve is structured to communicate the flow of positive pressure gas from the gas flow generator to the patient interface device during an inspiratory phase, and wherein the inner sleeve is structured to divert the flow of positive pressure gas to a first one of the at least two exhaust ports during an expiratory phase. - View Dependent Claims (21, 22, 23, 24, 25)
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Specification