Described herein are methods which involve minimizing or eliminating the occurrence of delayed negative effects that may arise from exposure to reduced oxygen partial pressure. An amount of supplemental oxygen, which substantially mimics a target oxygen partial pressure, is administered to an individual that is exposed to a reduced oxygen partial pressure environment, to compensate for the reduced oxygen partial pressure. The target partial pressure may be selected such that the individual experiences substantially no change in the oxygen partial pressure. Individuals receiving the supplemental oxygen may be healthy, have special sensitivities, or have a pre-existing neurological condition.

A method and apparatus deliver a variable flow of oxygen to a patient. The apparatus may include a flow control valve, a pressure sensor to detect a patient's breathing pressure and ambient pressure, an oxygen flow analyzer to measure oxygen flow to the patient, and a processor to analyze the breathing pressure values, ambient pressure value, and oxygen flow rate values and to determine when a patient is inhaling. When the processor determines the patient is inhaling, the processor calculates an optimal oxygen flow rate to deliver to a patient, which may depend on a pre-selected flow rate and an oxygen backlog, and the processor sends a signal to the flow control valve to deliver the optimal oxygen flow rate to the patient.

A device, system and method related to a pneumatic system for fluid analysis. The device, system and method comprise a connection interface for a fluid analyzer unit, a connection interface for a pump unit, a flow sensor and a pressure sensor. The device, system and method further comprises a control unit for calculating a pump stroke force or amplitude, and/or pump frequency based on measurements from the flow sensor and the pressure sensor for obtaining a constant flow through the pneumatic system.

For the purpose of improving sleep satisfaction for different human subjects individually, a sound source control device (20) includes: an acquirer (202) configured to acquire a biorhythm of a human subject; an estimator (204) configured to estimate sleep depths of the human subject from the acquired biorhythm of the human subject; a controller (230) configured to control a sound source (240) to play a sound in accordance with the acquired biorhythm of the human subject, the sound being defined using a prescribed parameter set; and an evaluator (220) configured to evaluate a sleep state of the human subject based on the estimated sleep depths of the human subject, and based on the evaluation, instruct the controller (230) to change at least a part of contents of the parameter set.

Detection of unintentional air leaks in a user interface (e.g., mask) of a respiratory therapy system (e.g., a positive air pressure device) is disclosed. One or more sensors (e.g., within a computing device, such as a smartphone) can be moved around relative to the user interface to determine a location and/or intensity of an air leak. The computing device can provide feedback regarding the location and/or intensity of the air leak to facilitate the user locating the air leak, and thus correcting the air leak. In some cases, augmented reality annotations can be overlaid on an image (e.g., live image) of the user wearing the user interface to identify the location of the air leak. The system can automatically detect the type of user interface being used and can provide tailored guidance for reducing the air leaks.

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.

Provided are concepts for controlling a high flow nasal therapy (HFNT) device used by a subject. In particular, physiological and movement parameter values of the subject are leveraged in order to generate a control signal for the HFNT device. These parameters may indicate an activity level of the subject, as well as the condition of the subject, providing information useful for setting appropriate operating conditions of the HFNT device. Thus, a means for automatically controlling a HFNT device based on needs of the subject may be provided, improving subject comfort during therapy, and ease of use of the HFT device.

Systems for managing pressure in a fluid reservoir chamber of a fluid infusion device are provided. For example, a fluid infusion device is provided. The fluid infusion device comprises a housing defining a reservoir chamber for receiving a fluid reservoir. The fluid infusion device also comprises a drive system contained within the housing for dispensing fluid from the fluid reservoir. The fluid infusion device comprises a pressure management system at least partially defined in the reservoir chamber to manage air pressure in the reservoir chamber.

A method and apparatus to detect environmental triggers of stress and antecedent physiological stress symptoms of a patient, followed up with delivery of stress relieving therapeutic response to the patient and a chronological report of events. An embodiment comprises a first device worn by the patient that contains sensors and can transmit and receive signals and a second device used by the caregiver that can transmit and receive signals. This integrated system continuously monitors environmental triggers and physiological stress indicative parameters of a patient diagnosed with autistic spectrum disorder, or other emotional or physical disorders, and compares these parameters against thresholds for the parameters. These thresholds can be configured automatically by the system—based on past episodes—or manually by the caregiver, or using automatically configured thresholds that are fine-tuned by the caregiver. When the parameters exceed the configured thresholds, several responses can be automatically generated by the system including: 1) generating therapeutic calming responses and cues to the patient to alleviate the episode, 2) sending notifications to the caregiver's device for intervention, and 3) creating a chronological assessment report of environmental stress triggers, antecedent physiological stress symptoms, and the resultant behavior of the patient.

Some embodiments of an infusion pump system can provide an alarm and user instructions in response to an ambient air pressure change or ambient air temperature that exceeds an alarm limit parameter. In some circumstances, the infusion pump system can be configured to monitor the actual ambient air pressure and temperature around the infusion pump system.