Methods, systems and devices for non-invasive ventilation including a non-sealing ventilation interface with an entrainment port and/or pressure feature
DCFirst Claim
1. A system for providing ventilatory support comprising:
- a gas source;
a gas delivery circuit;
a nasal interface adapted to allow a patient to breathe ambient air through the nasal interface;
a gas flow path through the nasal interface, wherein the gas flow path comprises a distal end gas flow path opening;
a nozzle positioned on a proximal end of the nasal interface at a distance from the distal end gas flow path opening; and
an entrainment port associated with the nasal interface, wherein at least a portion of the entrainment port is between the nozzle and the distal end gas flow opening,wherein the nozzle is in fluid communication with the gas delivery circuit and the gas source,wherein the nozzle delivers gas into the nasal interface to create a negative pressure area in the gas flow path at the entrainment port,wherein the nasal interface and the nozzle create a positive pressure area between the entrainment port and the distal end gas flow path, andwherein a combination of gas from the gas source and air entrained through the entrainment port provide ventilatory support.
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Accused Products
Abstract
Systems and methods may include a gas source, a gas delivery circuit, and a nasal interface allowing breathing ambient air through the nasal interface. A gas flow path through the nasal interface may have a distal gas flow path opening. A nozzle may be associated with a proximal end of the nasal interface a distance from the distal end gas flow path opening. At least a portion of an entrainment port may be between the nozzle and the distal end gas flow opening. The nozzle may deliver gas into the nasal interface to create a negative pressure area in the gas flow path at the entrainment port. The nasal interface and the nozzle may create a positive pressure area between the entrainment port and the distal end gas flow path opening. Gas from the gas delivery source and air entrained through the entrainment port may increase airway pressure or lung pressure or provide ventilatory support.
1008 Citations
65 Claims
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1. A system for providing ventilatory support comprising:
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a gas source; a gas delivery circuit; a nasal interface adapted to allow a patient to breathe ambient air through the nasal interface; a gas flow path through the nasal interface, wherein the gas flow path comprises a distal end gas flow path opening; a nozzle positioned on a proximal end of the nasal interface at a distance from the distal end gas flow path opening; and an entrainment port associated with the nasal interface, wherein at least a portion of the entrainment port is between the nozzle and the distal end gas flow opening, wherein the nozzle is in fluid communication with the gas delivery circuit and the gas source, wherein the nozzle delivers gas into the nasal interface to create a negative pressure area in the gas flow path at the entrainment port, wherein the nasal interface and the nozzle create a positive pressure area between the entrainment port and the distal end gas flow path, and wherein a combination of gas from the gas source and air entrained through the entrainment port provide ventilatory support. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48)
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49. A system for increasing airway pressure, comprising:
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a gas source; a gas delivery circuit; a nasal interface adapted to allow a patient to breathe ambient air through the nasal interface; a gas flow path through the nasal interface, wherein the gas flow path comprises a distal end gas flow path opening; a nozzle positioned on a proximal end of the nasal interface at a distance from the distal end gas flow path opening; and wherein the nozzle is in fluid communication with the gas delivery circuit and the gas source, wherein the nozzle delivers gas into the nasal interface to create a negative pressure area in the gas flow path near the proximal end of the nasal interface, wherein the nasal interface and the nozzle create a positive pressure area within the gas flow path distal to the negative pressure area, and wherein a combination of gas from the gas source and air entrained in the gas flow path increases airway pressure. - View Dependent Claims (50, 51, 52, 53, 54, 55)
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56. A nasal interface for treating sleep apnea comprising a tubular body with a distal end and proximal end and a gas flow path extending from the distal end to the proximal end, wherein the tubular body curves laterally from a nostril distal end to the proximal end, and comprises:
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a. a distal end configured to impinge a nostril airway; b. an ambient air entrainment aperture in the tubular body between the proximal end and the distal end adapted to permit spontaneous breathing of ambient air directly through the ambient air entrainment aperture without impeding a user'"'"'s breathing; c. a jet nozzle port positioned proximal to the ambient air entrainment aperture at the proximal end of the tubular body, and adapted to direct gas into the gas flow path and entrain air in from the ambient air entrainment aperture; and d. a pressure sensing port, wherein gas is configured to be delivered to a patient airway from a combination of the gas directed from the jet nozzle port and air entrained through the ambient air entrainment aperture, and wherein substantially all the gas exiting the user exits out of the ambient air entrainment aperture. - View Dependent Claims (57, 58, 59, 60, 61, 62, 63, 64, 65)
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Specification