Patent application number | Description | Published |
20130066226 | SYSTEM AND METHOD FOR DETECTING SLEEP ONSET IN A SUBJECT BASED ON RESPONSIVENESS TO BREATHING CUES - A wake-to-sleep transition for a subject is detected based on responsiveness to breathing cues provided to the subject. A pressurized flow of breathable gas to the airway of subject having one or more gas parameters that are adjusted to provide breathing cues to the subject. Based on a detected conformance of the respiration of the subject to the breathing cues, a determination is made as to whether the subject is awake or asleep. | 03-14-2013 |
20130228181 | Continuous Positive Airway Pressure (CPAP) Therapy Using Measurements of Speed and Pressure - A respiratory assistance device is disclosed. There is a variable speed blower with an output, and a patient ventilation interface configured for fitment on a patient respiratory passageway. A gas passage conduit couples the output of the blower to the patient ventilation interface. A pilot line from the gas passage conduit is coupled to a piloted exhalation valve of the patient ventilation interface. A pressure sensor measures a mask pressure in the patient ventilation interface, and a blower speed sensor measures a speed of the blower. A pressure controller in communication with the pressure sensor and the blower speed sensor detects a patient inspiratory phase and a patient expiratory phase from at least one of the measured speed of the blower and a set speed of the blower. The pressure controller adjusts an operating speed of the blower and actuates the piloted exhalation valve based upon the measured mask pressure. | 09-05-2013 |
20130263857 | MECHANICAL VENTILATION MASK FIT STATUS INDICATION - Indicating fit status of a mask in communication with a respiratory assistance device is disclosed. Upon initiating a therapeutic gas delivery from the respiratory assistance device to the mask, one or more measurements from respective one or more sensors of the respiratory assistance device is received. A leakage value from these measurements is derived, and a mask fit index is assigned. This is based at least upon a correlation of the leakage value to a particular sub-range of predetermined leakage values that corresponds to the mask fit index. The particular sub-range of predetermined leakage values is one among a plurality of sub-ranges, which together comprises an overall mask fit range defined at least by an ideal mask fit region, a loose mask fit region, and a tight mask fit region. A mask fit status based upon the assigned mask fit index is output to an indicator interface. | 10-10-2013 |
20130284174 | RESPIRATION-RATE DEPENDENT RESPIRATORY ASSISTANCE - Respiratory assistance is provided to a subject in the form of a pressurized flow of breathable gas. The pressure of the gas is eased during expiration and increased during inspiration. Changes in pressure are triggered and/or cycled based on the monitoring of tidal volume. Volume thresholds that cause triggering and/or cycling are adjusted based on an observed or measured breath rate. | 10-31-2013 |
20130333702 | METHOD AND SYSTEM FOR OPERATING A PATIENT VENTILATION DEVICE - A patient ventilation system including a ventilation interface and a ventilation source pneumatically coupled to a patient over the ventilation interface is disclosed. There is a controller that regulates airflow delivery from the ventilation source to the patient according to one or more predefined treatment configuration settings. The controller has an inactive ventilation state, a ventilation initiation state, a treatment state, a treatment suspension state, and a ventilation deactivation state. A display interface is coupled to the controller and configured to generate, exclusively, a device activation user element with the pressure controller in the inactive ventilation state, a fitment feedback indicator and a treatment screen in a ventilation initiation state, the fitment feedback indicator and a treatment status screen in the treatment state, a treatment suspension screen in the treatment suspension state, and a treatment conclusion screen in the ventilation deactivation state. | 12-19-2013 |
20140009282 | PERSONAL ALARM SYSTEM - A personal alarm system that only wakes up the intended user includes an appliance worn near the eye. The personal alarm system emits radiation of a particular wavelength onto the eye or eyelid of the intended user and a predetermined moment to wake up the intended user. | 01-09-2014 |
20140012595 | METHODS AND SYSTEMS TO PROMOTE TARGETED INTER-PATIENT INTERACTIONS TO INCREASE PATIENT ADHERENCE - Inter-patient networks, in particular virtual environments such as an online forum, may foster a sense of community and help promote user adherence to a (positive airway pressure) therapy regimen, despite various practical limitations. Systems and methods are provided to alleviate such limitations by providing a virtual environment in which users are matched (anonymously) in pairs or groups based on usage information of their respective therapeutic devices. | 01-09-2014 |
20140014111 | METHODS AND SYSTEMS TO MANAGE CENTRAL SLEEP APNEA BY CONTROLLING ACCUMULATED RETROGRADE VOLUME - Methods and systems to treat Cheyne-Stokes respiration (CSR) and/or central sleep apnea (CSA) include monitoring retrograde breathing and detecting respiratory events. Based on the occurrences of certain respiratory events, a target volume of rebreathing is adjusted to reduce arousals as well as CSR/CSA. | 01-16-2014 |
20140034055 | SELECTIVE RAMPING OF THERAPEUTIC PRESSURE IN A PATIENT BREATHING APPARATUS - A respiratory assistance device is disclosed. There is a patient interface for coupling to a patient respiratory passageway, and a selectively regulated therapeutic gas flow source in pneumatic communication with the patient over the patient interface. A ramping controller is connected to the therapeutic gas flow source and is receptive to inputs of a prescription pressure level, an initial pressure level, a total ramp duration, and a numeric value corresponding to a ramping duration. Therapeutic gas flow at an initial pressure level is regulated for a ramp delay duration reciprocal to the ramping duration relative to the total ramp duration. The ramping controller incrementally increases therapeutic gas flow to the prescription pressure level from a ramp start time to a ramp end time at a delivery pressure increase rate derived from the numeric value of the ramping duration and the total ramp duration. | 02-06-2014 |
20140261426 | Dual Pressure Sensor Patient Ventilator - A patient ventilation apparatus is disclosed. The apparatus includes an inlet port connectible to an oxygen source with pressurized oxygen enriched gas. An outlet port is connectible over a gas delivery conduit to a patient interface configured for fitment on a patient respiratory passageway. A valve is in pneumatic communication with the inlet port and with the outlet port. A first pressure sensor measures a patient interface pressure, which is connectible to the first pressure sensor over a pressure sensor line. A second pressure sensor measures a valve output pressure. A controller is in communication with the first pressure sensor, the second pressure sensor, and the flow sensor, to detect a patient inspiratory phase and a patient expiratory phase based upon a combination of measurements of the first pressure sensor and the second pressure sensor and to regulate the valve to selectively deliver pressurized oxygen enriched gas to the patient interface. | 09-18-2014 |
20140276168 | DETECTING MOUTH-BREATHING IN EARLY PHASE EXPIRATION - Mouth-breathing can be detected in early phase expiration during respiratory treatments involving a pressure support device. In accordance with some embodiments, an output signal is received from a sensor that conveys information relating to one or more parameters of the pressurized flow of breathable gas as it is delivered to an air-way of a subject. Transitions are estimated between inspiratory phases and expiratory phases of respiration by the subject based on the one or more determined parameters. A local extreme is identified in a level of a first parameter during a given expiratory phase of respiration by the subject. The level of the first parameter is analyzed as a function of time within a sampling window to determine whether the subject is breathing by mouth during the given expiratory phase. The sampling window begins at or proximate to the identified local extreme in the level of the first parameter. | 09-18-2014 |
20140283834 | PORTABLE VENTILATOR SECRETION MANAGEMENT SYSTEM - A patient ventilator secretion management system is disclosed. The system has a valve with an input in pneumatic communication with a therapeutic breathing gas source. The valve has variable positions, each of which corresponds to a specific flow rate of gas being output therefrom. A patient ventilation interface is in pneumatic communication with the valve over a gas delivery circuit. A controller in communication with the valve regulates the position thereof. The controller sequentially switches the valve from one of the variable positions to another to output a first range of fluctuating flow rates of gas for delivery to the patient ventilation interface during at least a selected one of patient expiratory and inspiratory phases. | 09-25-2014 |
20140373835 | DELIVERY ADAPTOR FOR VENTILATION SYSTEM - In accordance with the present invention, there is provided is provided a tubing arrangement and associated connectors, including a delivery adaptor and a Y-connector, which may be used to facilitate the operative interface of a patient interface to a ventilator within a ventilation system. The delivery adaptor is connected between the outlet connector of the flow generator and the main delivery tube (i.e., the quad-lumen tube) in the ventilation system. The delivery adaptor functions to retain the pneumatic isolation of a sense line of the ventilation system from certain other lumens of the quad-lumen tube, and further connects one of the small lumens of the quad-lumen tube to an external oxygen source or an external humidification source. The oxygen or humidification is delivered to such lumen through the adaptor. The oxygen or humidification is then bled into the air stream at the outlet of such lumen which is at the Y-connector. | 12-25-2014 |
20150068528 | CONTINUOUS POSITIVE AIRWAY PRESSURE THERAPY TARGET PRESSURE COMFORT SIGNATURE - A comfort signature that naturally adapts delivered pressure to patient breathing by measuring comfort directly from the source is disclosed. Pressure is measured at the patient interface and is used to provide a comfortable and suitable target pressure adjustment that is synchronized with patient respiration. | 03-12-2015 |
20150068529 | ZERO PRESSURE START CONTINUOUS POSITIVE AIRWAY PRESSURE THERAPY - A respiratory assistance device is disclosed. There is a patient interface for coupling to a patient respiratory passageway, and a selectively regulated therapeutic gas flow source in pneumatic communication with the patient over the patient interface. A controller is connected to the therapeutic gas flow source and is receptive to inputs of a prescription pressure level and an initial delay duration. After the patient dons the patient interface, therapeutic gas flow is restricted for the initial delay duration following receipt of a treatment initiation command. Upon the expiry of the initial delay duration, the controller increases therapeutic gas flow to the prescription pressure level. | 03-12-2015 |
20150073291 | APNEA AND HYPOPNEA DETECTION - The identification of obstructed breathing, including an apnea condition and a hypopnea condition, is disclosed. A signal representative of a flow rate of therapeutic gas being delivered to the patient is received. A peak flow value and a minimum flow value over a predetermined time window encompassing a plurality of respiration cycles is derived. A polynomial difference equation from the peak flow values and the minimum flow values is generated, and a respiration index from a minimum of the polynomial difference equation is derived. The apnea and/or hypopnea condition is indicated based upon a comparison of the respiration index to a predefined obstruction threshold over a predefined obstruction time period. | 03-12-2015 |