초록 ▼

A ventilator of the present invention includes a housing, a gas flow generator disposed in the housing, a gas outlet port provided on an exterior surface of the housing, and a first conduit coupling the gas flow generator to the gas outlet port. A gas inlet port is also provided on an exterior surfa

A ventilator of the present invention includes a housing, a gas flow generator disposed in the housing, a gas outlet port provided on an exterior surface of the housing, and a first conduit coupling the gas flow generator to the gas outlet port. A gas inlet port is also provided on an exterior surface of the housing. A second conduit couples the gas inlet port to a first exhaust valve in the housing that regulates a flow of exhaust gas from the second conduit. A second exhaust valve in the housing is coupled to the first conduit and regulates a flow of exhaust gas from the first conduit. A controller coupled to second exhaust valve causes the second exhaust valve to change a degree of flow restriction based on a respiratory phase of a patient coupled to the ventilator when the ventilator is operating in a single-limb ventilation configuration.

대표청구항 ▼

What is claimed is: 1. A ventilator comprising: a housing; a gas flow generator disposed in the housing and adapted to generate a flow of gas; a gas outlet port disposed on an exterior surface of the housing; a first conduit coupling the gas flow generator to the gas outlet port; a gas inlet port d

What is claimed is: 1. A ventilator comprising: a housing; a gas flow generator disposed in the housing and adapted to generate a flow of gas; a gas outlet port disposed on an exterior surface of the housing; a first conduit coupling the gas flow generator to the gas outlet port; a gas inlet port disposed on an exterior surface of the housing; a first exhaust valve disposed in the housing; a second conduit coupling the gas inlet port to the first exhaust valve, wherein the first exhaust valve controls a flow of exhaust gas from the second conduit; a second exhaust valve disposed in the housing and operatively coupled to the first conduit, wherein the second exhaust valve controls a first flow of exhaust gas from the first conduit; and a controller operatively coupled to the second exhaust valve, wherein the controller causes the second exhaust valve to change a degree of flow restriction based on a respiratory phase of a patient coupled to the ventilator responsive to the ventilator being configured to operate in a single-limb ventilation configuration. 2. The ventilator of claim 1, wherein the second exhaust valve is configured and arranged to exhaust the flow of gas from the first conduit to ambient atmosphere, to an inlet of the gas flow generator, or both. 3. The ventilator of claim 1, further comprising a pressure sensor adapted to monitor a pressure of gas in the first conduit, wherein the controller causes the second exhaust valve to change a degree of flow restriction responsive based on an output of the pressure sensor. 4. The ventilator of claim 1, wherein the ventilator is adapted to operate in a dual-limb ventilation configuration or in the single-limb ventilation configuration, wherein the controller causes the first exhaust valve to change a degree of flow restriction based on a respiratory phase of such a patient responsive to the ventilator operating in the dual-limb ventilation configuration. 5. The ventilator of claim 1, further comprising a dual-limb circuit comprising an inspiratory limb adapted to be coupled to the gas outlet port, and an expiratory limb adapted to be coupled to the gas inlet port, responsive to the ventilator being configured to operate in a dual-limb ventilation configuration; or a single-limb circuit having a proximal end adapted to be coupled to the gas outlet port, responsive to the ventilator being configured to operate in the single-limb ventilation configuration. 6. The ventilator of claim 5, further comprising: a patient interface coupled to a distal end of the single-limb circuit; and a passive exhaust assembly disposed in the patient interface, the single-limb circuit, or both to provide a second flow of exhaust gas to ambient atmosphere. 7. The ventilator of claim 1, further comprising an input device adapted to receive user-input selecting a dual-limb ventilation configuration or the single-limb ventilation configuration. 8. A ventilator comprising: a housing; a gas flow generator disposed in the housing and adapted to generate a flow of gas; an exhaust valve disposed in the housing; a gas outlet port disposed on an exterior surface of the housing; a gas inlet port disposed on an exterior surface of the housing; a first conduit structured to couple the gas flow generator to the gas outlet port and to the exhaust valve; a second conduit structured to couple the gas inlet port to the exhaust valve, wherein the exhaust valve is structured to control at least one of a flow of exhaust gas from the first conduit and a flow of gas from the second conduit; and a controller operatively coupled to the exhaust valve, wherein the controller causes the exhaust valve to change a degree of flow restriction responsive to a respiratory phase of a patient coupled to the ventilator and responsive to the ventilator being configured to operate in a single-limb ventilation configuration or a dual-limb ventilation configuration. 9. The ventilator of claim 8, further comprising a pressure sensor adapted to monitor a pressure of gas in the first conduit, wherein the controller causes the exhaust valve change a degree of flow restriction responsive based on an output of the pressure sensor. 10. The ventilator of claim 8, further comprising a dual-limb circuit comprising an inspiratory limb adapted to be coupled to the gas outlet port, and an expiratory limb adapted to be coupled to the gas inlet port, responsive to the ventilator being configured to operate in a dual-limb ventilation configuration; or a single-limb circuit having a proximal end adapted to be coupled to the gas outlet port, responsive to the ventilator being configured to operate in the single-limb ventilation configuration. 11. The ventilator of claim 10, further comprising: a patient interface coupled to a distal end of the single-limb circuit; and a passive exhaust assembly disposed in the patient interface, the single-limb circuit, or both to provide a flow of exhaust gas to ambient atmosphere. 12. The ventilator of claim 8, further comprising an input device adapted to receive user-input selecting the dual-limb ventilation configuration or the single-limb ventilation configuration. 13. A method for providing ventilation to a patient, comprising: (a) coupling such a patient to a ventilator with one of a single-limb circuit or a dual-limb circuit; and (b) creating a flow of gas with the ventilator, the ventilator comprising: (1) a housing, (2) a gas flow generator disposed in the housing and structured to generate the flow of gas, (3) an exhaust valve, (4) a gas outlet exhaust port disposed on an exterior surface of the housing and operatively coupled to the gas flow generator and to the exhaust valve, (5) a gas inlet port disposed on the exterior surface of the housing and operatively coupled to the exhaust valve; and (6) a controller operatively coupled to the exhaust valve, the controller adapted to cause the exhaust valve to change a degree of flow restriction responsive to a respiratory phase of such patient and responsive to such patient being coupled to the ventilator with the single-limb circuit or the dual-limb circuit.