TREATMENT OF RESPIRATORY CONDITIONS
First Claim
1. A respiratory treatment apparatus comprising:
- a flow generator to produce a flow of breathable gas through a patient interface at a first flow rate;
a humidifier in a path of the flow to humidify the breathable gas at a first humidity level;
a processor configured to control automatic adjustments to the first flow rate of the flow generator and to control automatic adjustments to the first humidity level.
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0 Petitions
Accused Products
Abstract
A device (102) provides respiratory treatment for SDB (including mild OSA) and other respiratory conditions. A flow generator warms and humidifies gas at controlled flow levels. For example, the device (102) delivers breathable gas to the upper airway at flow rates of about 10-35 Liters/minute. Levels of flow rate, temperature and/or humidification of the device may be automatically adjusted in response to the detection of SDB events. The device may also automatically deliver adjustments of any of the levels in accordance with detected phases of respiratory cycles. In some embodiments, the device automatically delivers distinct levels to either of the nares based on independent control of flow to each nare. A warm-up procedure controls temperature and humidity at a desired target during a ramp-up of flow to the set therapy level. A cool-down procedure controls temperature above the dewpoint to avoid condensation internal to the device and patient interface.
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Citations
97 Claims
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1. A respiratory treatment apparatus comprising:
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a flow generator to produce a flow of breathable gas through a patient interface at a first flow rate; a humidifier in a path of the flow to humidify the breathable gas at a first humidity level; a processor configured to control automatic adjustments to the first flow rate of the flow generator and to control automatic adjustments to the first humidity level. - 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)
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24. A method for control of a respiratory treatment apparatus, the method comprising:
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producing a flow of breathable gas through a patient interface at a first flow rate with a flow generator; in a path of the flow, humidifying the breathable gas at a first humidity level with a humidifier; with a processor, controlling automatic adjustments to the first flow rate of the flow generator and controlling automatic adjustments to the first humidity level. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46)
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47. A system for providing respiratory therapy to a patient comprising:
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a patient interface that is adapted to present a respiratory gas at an entrance to a patient'"'"'s airways; an air delivery conduit connected to the patient interface; a detector constructed and arranged to detect indications of sleep disordered breathing; and apparatus to provide a controllable supply of air having a flow rate, a temperature and a humidity, the apparatus being controlled to vary at least one of flow rate, temperature and humidity in response to indications of sleep disordered breathing detected by the detector. - View Dependent Claims (48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62)
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63. A system for providing respiratory therapy to a patient comprising:
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a patient interface adapted to present a respiratory gas at an entrance to a patient'"'"'s airways; an air delivery conduit connected to the patient interface; and apparatus to provide a controllable supply of air having a flow rate, a temperature and a humidity, the apparatus being controlled to vary at least one of flow rate, temperature and humidity, the apparatus being adapted to provide a first level of humidification during an inspiratory portion of a respiratory cycle of a patient and a second level of humidification during an expiratory portion of the respiratory cycle. - View Dependent Claims (64, 65, 66, 67, 68)
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69. A system for providing respiratory therapy to a patient comprising:
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a patient interface adapted to present a respiratory gas at an entrance to a patient'"'"'s airways; an air delivery conduit connected to the patient interface; and apparatus being adapted to provide a controllable supply of air having a flow rate, a temperature and a humidity, the apparatus being controlled to vary at least one of flow rate, temperature and humidity, the apparatus being adapted to provide a first level of temperature during an inspiratory portion of a respiratory cycle of a patient and a second level of temperature during an expiratory portion of the respiratory cycle. - View Dependent Claims (70, 71, 72, 73, 74)
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75. A system for providing respiratory therapy to a patient comprising:
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a patient interface adapted to present a respiratory gas at an entrance to a patient'"'"'s airways, the interface comprising a first flow path associated with a first nare and second flow path associated with a second nare; and apparatus to provide a controllable supply of air having a flow rate, a temperature and a humidity, the apparatus being controlled to vary at least one of flow rate, temperature and humidity, the apparatus being adapted to control the first flow path independently from the second flow path with respect to any of the flow rate, temperature and humidity of each of the first flow path and second flow path. - View Dependent Claims (76, 77, 78)
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79. A system for providing respiratory therapy to a patient comprising:
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a patient interface adapted to present a respiratory gas at an entrance to a patient'"'"'s airways; an air delivery conduit connected to the patient interface; and apparatus to provide a controllable supply of air having a flow rate, a temperature and a humidity, the apparatus being controlled to vary at least one of flow rate, temperature and humidity, the apparatus being adapted to control gradual ramping of the flow rate of air from an initial flow rate to a therapy flow rate, the ramping of flow rate occurring over a preset period of time while a therapy level of temperature and humidity of the air is maintained within a preset margin of deviation from a therapy level setting of temperature and humidity.
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80. A system for providing respiratory therapy to a patient comprising:
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a patient interface adapted to present a respiratory gas at an entrance to a patient'"'"'s airways, the interface comprising a first flow path associated with a first nare and second flow path associated with a second nare; apparatus to provide a controllable supply of air having a flow rate, a temperature and a humidity, the apparatus being controlled to vary at least one of flow rate, temperature and humidity, the apparatus being adapted to control ramping of the temperature and humidity of air from a therapy level to an ambient level, the ramping occurring over a period of time while the apparatus controls the temperature of the air within a preset margin of deviation above a dewpoint temperature. - View Dependent Claims (81)
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82. An apparatus to provide a respiratory therapy to a patient comprising:
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a flow generator to generate a flow of breathable gas at a therapeutic flow rate for a patient interface; a humidifier and heater to heat and humidify the flow of breathable gas; and a controller to control a ramp procedure initiated by user activation of an input device of the apparatus, the re-ramp procedure comprising the apparatus delivering a ramp flow rate during a ramp period and delivering the therapeutic flow rate after the ramp period, wherein the ramp flow rate is lower than the therapeutic flow rate, and wherein the ramp period is a time period greater than several breaths, and wherein the controller controls the ramp procedure as a function of a humidification or temperature state of the breathable gas. - View Dependent Claims (83, 84)
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85. A patient interface device for a respiratory treatment apparatus to direct a flow of breathable gas to the respiratory system of a patient comprising:
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a coupling for a breathable gas delivery hose, a gas directing outlet portion to direct a flow of breathable gas to nares of a patient; and a nasal dilator mount portion. - View Dependent Claims (86, 87, 88, 89, 90)
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91. A patient interface device for a respiratory treatment apparatus to direct a flow of breathable gas to the respiratory system of a patient comprising:
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a coupling for connection of a breathable gas delivery hose, and a gas directing outlet portion to direct a flow of breathable gas to nares of a patient; wherein the coupling comprises a swivel configured for relative rotation between the breathable gas delivery hose and the gas directing outlet aperture portion. - View Dependent Claims (92, 93)
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94. An apparatus to direct a flow of breathable gas to the respiratory system of a patient comprising:
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a patient interface adapted to engage nares, wherein the patient interface is adapted not to seal against a patient'"'"'s face, wherein the patient interface is also connectable to a flow generator, a flow generator to produce a flow of breathable gas through a patient interface at a first flow rate; a controller and at least one sensor are configured to reduce or stop first flow rate, if the sensor detects a disengagement of the patient interface from nares.
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95. An apparatus to direct a flow of breathable gas to the respiratory system of a patient comprising:
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a patient interface adapted to engage the nares, wherein the patient interface is adapted not to seal against a patient'"'"'s face, wherein the patient interface is also connected to a flow generator, a flow generator to produce a flow of breathable gas through a patient interface at a first flow rate; the patient interface includes an air diffuser on or proximal to an end of the patient interface engaging the nares.
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96. An apparatus to direct a flow of breathable gas to the respiratory system of a patient comprising:
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a patient interface adapted to engage the nares, wherein the patient interface is adapted not to seal against a patient'"'"'s face, wherein the patient interface is also connected to a flow generator, a flow generator to produce a flow of breathable gas through a patient interface at a first flow rate; the patient interface includes a clip adapted to engage the nares.
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97. An apparatus to direct a flow of breathable gas to the respiratory system of a patient comprising:
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a patient interface adapted to engage the nares, wherein the patient interface is adapted not to seal against a patient'"'"'s face, wherein the patient interface is also connected to a flow generator, a flow generator to produce a flow of breathable gas through a patient interface at a first flow rate; the patient interface includes an baffle on or proximal to an end of the patient interface engaging the nares.
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Specification