Methods, systems and devices for non-invasive open ventilation for treating airway obstructions
First Claim
1. A system for reducing airway obstructions of a patient, the system comprising:
- a ventilator;
a control unit;
a gas delivery circuit with a proximal end in fluid communication with the ventilator and a distal end in fluid communication with a nasal interface;
the nasal interface comprising;
at least one jet nozzle;
at least one outer tube including a wall defining a gas flow path therethrough;
at least one entrainment aperture defined in the wall of the at least one outer tube in fluid communication with ambient air, wherein the at least one entrainment aperture is in proximity to the at least one jet nozzle;
at least one spontaneous breathing aperture defined in the wall of the at least one outer tube in fluid communication with ambient air, wherein the at least one spontaneous breathing aperture is in downstream proximity to the at least one entrainment aperture; and
at least one spontaneous respiration sensor in communication with the control unit for detecting a respiration effort pattern and a need for supporting airway patency,wherein the control unit determines a plurality of baseline gas output velocities, wherein the plurality of baseline gas output velocities are synchronized with different parts of a spontaneous breath effort cycle, and adjusts the plurality of baseline gas output velocities as determined by the need for supporting airway patency.
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Accused Products
Abstract
A system for reducing airway obstructions of a patient may include a ventilator, a control unit, a gas delivery circuit with a proximal end in fluid communication with the ventilator and a distal end in fluid communication with a nasal interface, and a nasal interface. The nasal interface may include at least one jet nozzle, and at least one spontaneous respiration sensor in communication with the control unit for detecting a respiration effort pattern and a need for supporting airway patency. The system may be open to ambient. The control unit may determine more than one gas output velocities. The more than one gas output velocities may be synchronized with different parts of a spontaneous breath effort cycle, and a gas output velocity may be determined by a need for supporting airway patency.
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Citations
56 Claims
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1. A system for reducing airway obstructions of a patient, the system comprising:
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a ventilator; a control unit; a gas delivery circuit with a proximal end in fluid communication with the ventilator and a distal end in fluid communication with a nasal interface; the nasal interface comprising; at least one jet nozzle; at least one outer tube including a wall defining a gas flow path therethrough; at least one entrainment aperture defined in the wall of the at least one outer tube in fluid communication with ambient air, wherein the at least one entrainment aperture is in proximity to the at least one jet nozzle; at least one spontaneous breathing aperture defined in the wall of the at least one outer tube in fluid communication with ambient air, wherein the at least one spontaneous breathing aperture is in downstream proximity to the at least one entrainment aperture; and at least one spontaneous respiration sensor in communication with the control unit for detecting a respiration effort pattern and a need for supporting airway patency, wherein the control unit determines a plurality of baseline gas output velocities, wherein the plurality of baseline gas output velocities are synchronized with different parts of a spontaneous breath effort cycle, and adjusts the plurality of baseline gas output velocities as determined by the need for supporting airway patency. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 53, 54)
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15. A device for treating sleep apnea, the device comprising:
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a ventilator with a control system; a gas supply; a nasal interface comprising a manifold adapted to be placed under a nose, the manifold comprising; at least one wall surrounding a gas flow path; a gas chamber in the gas flow path; nasal cushions adapted to be in communication with the nose and in communication with the gas flow path; a pressure sensing port in communication with the gas chamber; at least one spontaneous breathing aperture defined in the at least one wall in fluid communication with ambient air, wherein a patient can exhale completely through the at least one spontaneous breathing aperture and inspire through the at least one spontaneous breathing aperture; a jet nozzle in communication with the gas flow path; at least one entrainment aperture defined in the at least one wall in proximity to the at least one jet nozzle in fluid communication with ambient air, wherein the at least one spontaneous breathing aperture is in downstream proximity to the at least one entrainment aperture; and a gas delivery circuit pneumatically connecting the ventilator to the nasal interface and in communication with the jet nozzle; wherein gas flows from the ventilator through the gas delivery circuit, out the jet nozzle into the manifold gas flow path, into the gas chamber, and through the nasal cushions to the nose, and wherein the gas delivery into the gas chamber of the manifold creates a positive pressure in the gas chamber, and wherein the positive pressure is controlled at a desired positive pressure by the control system. - View Dependent Claims (16, 17, 18, 19, 20, 55)
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21. A device for treating sleep apnea, the device comprising:
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a ventilator with a control system; a gas supply; a nasal interface including; at least one jet nozzle; at least one outer tube including a wall defining a gas flow path therethrough; at least one entrainment aperture defined in the wall of the outer tube in fluid communication with ambient air, wherein the at least one entrainment aperture is in proximity to the at least one jet nozzle; at least one spontaneous breathing aperture defined in the wall of the at least one outer tube and in fluid communication with ambient air, wherein the at least one spontaneous breathing aperture is in downstream proximity to the at least one entrainment aperture; and at least one breathing sensor; and a gas delivery circuit pneumatically connecting the ventilator to the at least one jet nozzle for delivering ventilation gas, wherein the nasal interface is adapted to locate the at least one breathing sensor in proximity to a nostril entrance and within the nasal interface structure, and is further adapted to locate the at least one jet nozzle a distance away from the nostril entrance distal to the at least one breathing sensor and within the nasal interface structure. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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34. A method for reducing airway obstructions of a patient, the method comprising:
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providing a nasal interface for positioning at least one jet nozzle for delivering pressurized gas to a patient nasal airway, the nasal interface including a gas flow path, wherein at least one spontaneous breathing aperture and at least one entrainment aperture are defined in a wall of an outer tube of the nasal interface and in fluid communication with the gas flow path and ambient air, the at least one entrainment aperture being in proximity to the at least one let nozzle, and the at least one spontaneous breathing aperture being in downstream proximity to the at least one entrainment aperture; delivering pressurized gas from a ventilator to a gas delivery circuit in fluid communication with the at least one jet nozzle; delivering pressurized gas to the patient nasal airway through the at least one jet nozzle; sensing a respiration effort pattern and a need for supporting airway patency with at least one sensor in communication with a control unit; determining a plurality of baseline pressurized gas output velocities, wherein the plurality of baseline gas output velocities are synchronized with different parts of a spontaneous breath effort cycle, and adjusting the plurality of baseline gas output velocities as determined by the need for supporting airway patency; and modifying the delivery of pressurized gas based upon phases of breathing in a cyclical pattern synchronized with the phases of breathing; wherein the pressurized gas increases airway pressure, wherein the pressurized gas entrains ambient air via the at least one entrainment aperture, and wherein the patient nasal airway is open to ambient via the at least one spontaneous breathing aperture. - View Dependent Claims (35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 56)
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49. A method of treating sleep apnea, the method comprising:
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providing a ventilator, a gas delivery circuit, and a nasal interface having a gas flow path, the nasal interface including at least one spontaneous breathing aperture and at least one entrainment aperture defined in a wall of an outer tube of the nasal interface in fluid communication with ambient air, wherein the at least one entrainment aperture is in proximity to the at least one jet nozzle, and the at least one spontaneous breathing aperture is in downstream proximity to the at least one entrainment aperture; connecting a proximal end of the gas delivery circuit to the ventilator; connecting a distal end of the gas delivery circuit to the nasal interface; attaching the nasal interface to a face of a user, wherein the nasal interface allows the user to inhale and exhale ambient air across or through the gas flow path of the nasal interface without breathing being restricted; turning ventilator power on, the ventilator entering into a patient-monitoring mode in which respiratory parameters are measured without delivering a therapeutic gas flow; and after a predetermined delay following entry into the patient monitoring mode, delivering the therapeutic gas flow from the ventilator through the gas delivery circuit and the nasal interface to a nasal airway of the user. - View Dependent Claims (50, 51, 52)
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Specification