Methods and apparatus for treating a respiratory disorder, in one aspect, include an apparatus that delivers backup breaths at a sustained timed backup rate that is a function of the patient's spontaneous respiratory rate. Other aspects include apparatus that delivers backup breaths at a rate that gradually increases from a spontaneous backup rate to a sustained timed backup rate or, alternatively, apparatus that oscillates a treatment pressure in antiphase with the patient's spontaneous respiratory efforts when a measure indicative of ventilation is greater than a threshold. Other aspects include apparatus configured to treat Cheyne-Stokes respiration by computing the treatment pressure so as to bring a measure indicative of ventilation of the patient towards a target ventilation that is dependent on the measure indicative of ventilation or, alternatively, by periodically elevating the treatment pressure to a high level for a short time, the high level being high enough and the short time being long enough to induce a central apnea in a patient. Depending on functionality, the foregoing apparatus may comprise an adaptive servo-ventilator or CPAP therapy device.

Devices and systems with methods for detecting a sealing condition between a patient interface and a patient, and adjusting the patient interface to maintain the patient interface in sealing contact with the patient. The patient interface may include a sealing structure to form a seal on the patient, and a positioning structure to secure the sealing structure to the patient. The patient interface may include a sensor coupled to the sealing structure. A processor determines the sealing condition between the sealing structure and the patient based on a signal from the sensor, and adjusts at least one of the sealing structure and the positioning structure to maintain the sealing structure in sealing contact with the patient. A prediction system predicts a leak between the sealing structure and the patient based on the sensor signal. A learning system learns how to fit the sealing structure to the patient to form a seal.

A method of a control system (2200) controls an inductance motor in a blower including an impeller and volute using a pressure compensation control system. The control system may be implemented in a respiratory pressure therapy device. The control system may include a sensor configured to provide a pressure signal indicative of the pressure of a flow of fluid produced by the blower. A measured pressure may be compared to a set pressure to determine a pressure error. A slip frequency may be adjusted as a function of the pressure error in an attempt to eliminate or minimise the pressure error.

Disclosed is an autoCPAP respirator which comprises a control unit, a respiration blower and a pressure sensor. The control unit comprises a controller for generating a first control signal, which induces the speed of the blower to generate a pressurized breathing gas flow, a controller for generating a periodically variable control signal, which activates the blower such that the speed of the blower varies in an oscillating manner at a frequency in the range of 1-20 Hz, and a sensor device, which ascertains one or more of instantaneous speed, instantaneous electrical current and instantaneous electrical power of the blower to determine the breathing gas flow and/or breathing gas volume generated by the blower while using characteristic data of the blower stored in a memory.

A medical device is provided with an alarm organization. A process for alarm organization of a medical device is also provided. Based on pressure measured values (99) and flow measured values (97) and with a comparison criterion it is determined whether an elevation of an airway pressure (105) of an anesthesia device or of a ventilator is caused by a coughing event. A visual and/or acoustic output (117, 121) of a warning or alarm (42) is adapted, indicating the elevated airway pressure P.sub.AW.sub._.sub.High (105).

A pressure support device such as a CPAP machine, is provided, which includes a housing, and a controller enclosed by the housing. The controller operates the CPAP machine independently or in combination with an accessory such as, for example and without limitation, a humidifier. A user interface is operably coupled to the controller and includes a primary display, a secondary display and a single control. The single control is operable in a first mode of operation to adjust operating parameters of the CPAP machine, and in a second mode of operation to adjust operating parameters of the humidifier. The secondary display preferably comprises a dead front, which is operational (e.g., without limitation, visible) only in the second mode of operation. A method of operating a pressure support device is also disclosed.

A signaling apparatus for an anesthesia machine, the signaling apparatus comprising an user input sub-module for receiving input information from an user, an available gas sub-module for signaling types of currently available gases according to information of the user input sub-module, and an available gas outlet sub-module for signaling currently available gas outlets according to information of the user input sub-module.

A method of predicting an unintentional leak in a respiratory system during a sleep session includes causing, during the sleep session, pressurized air to be delivered from a respiratory device to a user via a conduit coupled to a user interface. The method also includes receiving historical first data associated with pressurized air delivered from the respiratory device during one or more prior sleep sessions; receiving current first data associated with the pressurized air being delivered from the respiratory device during the sleep session; receiving historical second data associated with the user during one or more prior sleep sessions; and receiving, via one or more second sensors, current second data associated with the user during the current sleep session. The method determines, a likelihood that an unintentional leak in the respiratory system will occur within a predetermined amount of time.

The self-inflating bag control system is characterized in that it comprises a bag controlling valve which is connected to at least two gas pumps and at least one gas parameter sensor via the gas distribution tubes. It comprises at least one gas pressing device connected to the valve via a gas parameter sensor via gas flow tubes. A control unit with a control panel is connected to the system through a gas sensor, which includes a sub-unit for setting the parameters of the gas flowing into the self-expanding bag, a measuring and analyzing the parameters of the gas flowing in the system by measuring the pressure and volume of the gas from the as parameters sensor, and a warn-alarm sub-unit, which generates a warning and/or alarm signal on the basis of the gas parameters read from the measurement and analysis subunit.

A process and apparatus monitor a ventilator (100). The ventilator (100) performs supportive artificial ventilation including a sequence of ventilation strokes, with the objective that each inspiration effort of the patient (Pt) triggers a ventilation stroke and the start and the end of the ventilation stroke coincide with the start and the end of the inspiration effort, respectively. A monitoring unit (11) detects deviations between the patient's own inspiratory efforts and the artificial ventilation and determines a respective measure for the respective frequency and/or duration for different possible asynchrony types.