Abstract: Method and apparatus for determining the volemic status and vascular tone of the haemodynamic system. The method comprises: receiving a photoplethysmography (PPG) signal by a computer, which signal comprises an alternating AC component as PPG amplitude and the DC component as PPG baseline from a sensor in data communication with a living tissue; determining, in each case by a computer, a multiplicity of PPG signals from the living tissue; determining a multiplicity of AC components of the PPG signals, determining a multiplicity of DC components of the PPG signals, determining a multiplicity of AC waveforms from the AC components and identifying differences in the AC waveforms over time by comparing at least two AC waveforms; determining a DC signal trend over time by comparing at least two DC components; and determining the volemic status and/or vascular tone of the haemodynamic system of the living tissue as a reaction to at least one AC waveform difference and/or a DC signal trend over time.

Abstract: A medical ventilator comprises a respiratory air connection for connecting a patient's respiratory apparatus, allowing the patient to be ventilated with breathable air. In addition, the ventilator comprises an actuator device for providing a respiratory air flow at the respiratory air connection. A control unit is configured to carry out a method as set forth in the claims when the respiratory apparatus is connected to the respiratory air connection.

Abstract: A ventilator comprises a respiratory air connector connected to the respiratory system of a patient; an actuation system for providing a respiratory air flow; a sensor system for creating measurement data relating to the ventilation. A control unit for the ventilator is configured to carry out: creating a control signal for controlling the actuation system such that a ventilation maneuver is performed, within which at least one section of the respiratory system is opened/closed in an inhalation/exhalation phase; receiving the measurement data indicating a pressure-dependent curve of an amount of a respiratory gas inhaled/exhaled by the patient as a function of a pressure of the respiratory air; determining an opening/closing pressure corresponding to a pressure of the respiratory air at which at least one section of the respiratory system is opened/closed, by evaluating a section of the pressure-dependent curve that relates to the inhalation/exhalation phase.

Abstract: The invention relates to a hose system with an inspiratory hose portion which is configured for connection to a respective inspiration channel of a ventilation apparatus and which is configured to convey an inspiratory respiratory gas flow from the ventilation apparatus to a patient interface. The inspiratory hose portion has a hose adapter which is configured for connection to the inspiration channel of the ventilation apparatus. The hose adapter has a hose branch point from which at least two inspiration branches branch off, wherein each inspiration branch has at least one attachment piece for connection to a patient interface.

Abstract: A system for ventilation of a being, comprising at least one ventilator and at least one EIT measuring device, the ventilator comprising at least one controllable respiratory gas source and a programmable control unit for controlling the respiratory gas source and the EIT measuring device comprising at least one sensor apparatus for measuring impedance values of at least one lung of the being and at least one calculation and evaluation unit, and the system assigning the impedance values measured by way of the at least one sensor apparatus to pixels n, and the control unit being configured as specified in the claims.

Abstract: A method for estimating a concentration of a respiratory gas in the blood of a patient comprises: receiving measurement data, which indicate a volume-dependent course of a concentration of the respiratory gas in a respiratory airflow exhaled by the patient depending on a respiratory air volume exhaled by the patient; generating input data from the measurement data, the input data comprising a matrix of values for various parameters with respect to the volume-dependent course; inputting the input data into a machine learning module which was trained to convert the input data into output data, which indicate a concentration of the respiratory gas in the blood of the patient; outputting the output data by way of the machine learning module.

Abstract: A system for ventilation of a being, comprising at least one ventilator and at least one EIT measuring device, the ventilator comprising at least one controllable respiratory gas source and a programmable control unit for controlling the respiratory gas source and the EIT measuring device comprising at least one sensor apparatus for measuring impedance values of at least one lung of the being and at least one calculation and evaluation unit, and the system assigning the impedance values measured by way of the at least one sensor apparatus to pixels n, and the control unit being configured as specified in the claims.

Abstract: A nebulizer for producing an inhalable mist of droplets, comprising at least an aerosol generator, a housing having a liquid reservoir and control electronics, the aerosol generator consisting at least of a membrane, a piezo element and a substrate plate, and the control electronics comprising at least an RF generator, a controller, memory and switching elements, and an inductor. The aerosol generator forms a resonant circuit together with the inductor and the control electronics are configured to at least partly excite the aerosol generator to vibrate. The aerosol generator is configured such that aerosol droplets are producible by vibrations and the RF generator is configured to vary the amount of aerosol produced.

Abstract: The invention relates to a method and a device for separating carbon dioxide from a respiratory gas mixture. The separation is carried out by means of a membrane which acts as a molecule filter.

Abstract: A device for measuring metabolic parameters and functional residual capacity is connected to a ventilator. To measure CO2 and O2 concentrations, the device takes a sample from a patient's breathing circuit and measures the gas flow rate in the circuit in parallel. The respiratory gas flow rate is measured without a time lag. The CO2 and O2 concentration data differ in time by the transport lag in sample delivery from the patient circuit to the CO2 and O2 sensors. The processor measures and compensates for transport lags. Time-synchronized CO2 and O2 concentration data are time-integrated with the flow rate, and the volumetric amounts of CO2, O2/N2 are calculated. On the basis of these data, metabolic parameters and/or volumetric capnometry function and/or functional residual capacity are calculated.

Abstract: A method for determining a regional compliance of a lung during spontaneous respiration. In the method, a lung compliance value C.M is determined by triggering an inspiration maneuver and either measuring a compliance of the entire lung or of a surrogate for the compliance of the entire lung. In the method, there further is a capture of an electrical impedance distribution along at least one two-dimensional section through a human thorax by a device for electrical impedance tomography, with a multiplicity of EIT pixels being captured. An end-inspiratory and an end-expiratory electrical impedance are determined for each EIT pixel and an impedance difference is determined for each EIT pixel. The regional compliance is determined for specific EIT pixels, which are assigned to an impedance value range based on a frequency distribution of all EIT pixels.

Abstract: A respiratory device comprises a respirator having a controllable respiratory gas source, a programmable control unit and at least one sensor unit for determining pressure and/or flow of respiratory gas. The control unit controls a respiratory gas source to specify a first respiration pattern. The respiratory device comprises at least two further sensor units, a first sensor unit comprising a plurality of individual sensors for generating and/or measuring electrical potentials and noninvasively determining the electrical impedance of the lungs of a patient, a second sensor unit for noninvasively determining the carbon dioxide supply and a third sensor unit for noninvasively determining the oxygen supply of the patient. The control unit evaluates the measured values of the first, second and third sensor units to determine the instantaneous ventilation of the lungs during the respiration using the first respiration pattern, the instantaneous carbon dioxide supply and the instantaneous oxygen supply.

Abstract: A ventilator comprises an identification device that is configured and designed to identify at least one magnetic field M.

Abstract: The invention relates to a method and a device for separating carbon dioxide from a respiratory gas mixture. The separation is carried out by means of a membrane which acts as a molecule filter.

Abstract: An apparatus for capturing the electrical behavior of the human body during respiration and/or ventilation, the apparatus comprising ventilation elements, elements for capturing the impedance of the patient and at least one control unit. The impedance is captured using at least two electrically conductive electrodes, which capture the electrical behavior of the human body. The elements for capturing the impedance are configured to capture the change in the impedance of the human body over time during respiration and/or ventilation.

Abstract: The present invention relates to a system for real-time determination of a local strain of a lung during artificial ventilation. The system comprises a device for electrical impedance tomography (EIT), which device is configured to capture an electrical impedance distribution along at least one two-dimensional section through a human thorax, and further comprises a device for assigning the captured electrical impedance distribution, which device is configured to divide the captured electrical impedance distribution at different times during the artificial ventilation into a multiplicity of EIT pixels and to assign a specific value of the electrical impedance at a specific time to a specific EIT pixel.

Abstract: Method and apparatus for determining the volemic status and vascular tone of the haemodynamic system. The method comprises: receiving a photoplethysmography (PPG) signal by a computer, which signal comprises an alternating AC component as PPG amplitude and the DC component as PPG baseline from a sensor in data communication with a living tissue; determining, in each case by a computer, a multiplicity of PPG signals from the living tissue; determining a multiplicity of AC components of the PPG signals, determining a multiplicity of DC components of the PPG signals, determining a multiplicity of AC waveforms from the AC components and identifying differences in the AC waveforms over time by comparing at least two AC waveforms; determining a DC signal trend over time by comparing at least two DC components; and determining the volemic status and/or vascular tone of the haemodynamic system of the living tissue as a reaction to at least one AC waveform difference and/or a DC signal trend over time.

Abstract: Method for ascertaining and setting a filling volume of a balloon of a catheter, which is placed in the esophagus of a living being, wherein the balloon is filled and/or emptied using a fluid. According to the invention, the balloon is filled and/or emptied step-by-step using at least two volume steps, a pressure difference between a pressure at the end of an expiration (Pmin) and a pressure at the end of an inspiration (Pmax) is determined for at least two volume steps, a relative pressure difference between Pmin and Pmax is determined, a border range is defined on the basis of the relative pressure difference, and an optimum filling volume is ascertained in consideration of the border range.

Abstract: 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.

Abstract: A nebulizer for producing an inhalable mist of droplets, comprising at least an aerosol generator, a housing having a liquid reservoir and control electronics, the aerosol generator consisting at least of a membrane, a piezo element and a substrate plate, and the control electronics comprising at least an RF generator, a controller, memory and switching elements, and an inductor. The aerosol generator forms a resonant circuit together with the inductor and the control electronics are configured to at least partly excite the aerosol generator to vibrate. The aerosol generator is configured such that aerosol droplets are producible by vibrations and the RF generator is configured to vary the amount of aerosol produced.