System for assisting a patient in speaking, comprising at least one ventilation apparatus and a patient interface, the ventilation apparatus comprising at least one controllable respiratory gas source and being designed to identify two or more respiratory phases, at least inspiration and expiration, of the patient, and the patient interface having at least one speaking tube and a respiratory tube and being configured to conduct speaking gas to the patient via the speaking tube and to conduct respiratory gas to and/or from the patient via the respiratory tube. The system is configured to provide speaking gas to the patient at least temporarily in a speaking mode in order to enable speaking.

A universal respiratory detector for detecting a respiratory gas. The universal respiratory detector may include a plurality of layers with a visual indicator to quickly and reversibly change color to detect a respiratory gas parameter such as carbon dioxide. The color change may be visible from both sides of the detector. In some examples, the respiratory detector may be a biocompatible and conformable sticker for mounting on a person's face or an oxygen delivery device.

Methods and systems are provided for anesthetic agent leakage diagnostics. In one embodiment, a method for diagnosing leaks in an anesthetic vaporizer includes calculating a leakage rate based on measurements of an anesthetic agent level in a sump of the anesthetic vaporizer, the measurements received from a fluid level sensor at a first time and a second time, and outputting a maintenance alert responsive to the leakage rate exceeding a threshold.

A ventilation device for artificial ventilation, having: —a ventilation gas source; —a ventilation conducting assembly for conducting inspiratory ventilation gas from the ventilation gas source to a patient-side, proximal ventilation-gas outlet opening and for conducting expiratory ventilation gas away from a proximal ventilation-gas inlet opening; —a pressure-changing assembly for changing the pressure of the ventilation gas flowing in the ventilation conducting assembly; —a control device, which is designed to control the operation of the ventilation gas source and/or the operation of the pressure-changing assembly; —an evaluation device for processing sensor signals; and —an O2 sensor assembly for determining an O2 concentration value representing the oxygen concentration of the ventilation gas flowing in the ventilation conducting assembly, wherein the O2 sensor assembly outputs O2 sensor signals, which contain information regarding the O2 concentration value, to the evaluation device, and wherein the evaluation device is designed to determine, on the basis of the O2 sensor signals, an O2 change value representing a change in the O2 concentration value and, if the O2 change value satisfies a predefined condition, to infer degradation of the O2 sensor assembly and to output a signal.

The invention relates to medicine, The technical result of the present invention is to increase the efficiency of treatment of the respiratory system pathologies. The system includes a communication unit connected to a ventilator, a human-machine interface unit, a data processing, storage and management unit, an algorithmic unit, a pulse generation unit, a unit of electromyography electrodes and a stimulation.

Alveolar dead space of a subject is determined by measuring an end tidal partial pressure of carbon dioxide during a sequence of normal breaths of the subject and, during a sequence of deep breaths by the subject, delivering a first volume of a first gas to the subject over a first portion of each inspiration by the subject. The first volume is less than or equal to an expected alveolar volume of the subject when the subject is breathing normally. A second volume of a second gas is delivered to the subject over a second portion of each inspiration. The second gas includes a neutral gas. An end tidal partial pressure of carbon dioxide is measured during the sequence of deep breaths. The alveolar dead space is computed using the end tidal partial pressures of carbon dioxide measured during the sequence of normal breaths and the sequence of deep breaths.

A nasal interface uses asymmetrical nasal delivery elements to deliver an asymmetrical flow through the interface to both nares or to either nare, and a mouthpiece may be inserted to maintain a leak, to improve dead space clearance in the upper airways, decrease peak expiratory pressure, reduce noise, increase safety of the therapy for smaller patients and reduce resistance in the interface allowing desired flow rates to be achieved at reduced motor speeds of associated flow generating devices. Different forms of fittings, such as sleeves or inserts can be attached to nasal delivery elements to improve or optimise the therapeutic effects of nasal high flow. It may allow high pressures to be achieved at lower flow rates, reduce noise, improve patient comfort and efficiently clear anatomical dead space.

A flow of gases in a respiratory therapy system can be conditioned to achieve more consistent output from sensors configured to sense a characteristic of the flow. The flow can be mixed by imparting a tangential, rotary, helical, or swirling motion to the flow of gases. The mixing can occur upstream of the sensors. The flow can be segregated into smaller compartments to reduce turbulence in a region of the sensors.

Disclosed is respiratory assistance apparatus comprising a flow generator configured to provide breathing gases to a patient, the breathing gases comprising supplemental oxygen provided from an oxygen source. The respiratory assistance apparatus controller is configured determine a target oxygen concentration of the breathing gases and calculate an estimated future value of the patient's blood oxygen concentration based on a difference between an initial oxygen concentration of the breathing gases and the target oxygen concentration of the breathing gases, and the patients blood oxygen concentration.

A high flow therapy system for delivering heated and humidified respiratory gas to an airway of a patient includes a respiratory gas flow pathway for delivering the respiratory gas to the airway of the patient by way of a non-sealing respiratory interface; wherein flow rate of the respiratory gas is controlled by a microprocessor, a mixing area for mixing a first gas and a second gas in the respiratory gas flow pathway, a humidification area downstream of the mixing area and configured for humidifying respiratory gas in the respiratory gas flow pathway, and a heated delivery conduit for minimizing condensation of humidified respiratory gas.