Abstract: A process for ventilating a patient as well as a device—patient module (20)—operating according to the process, wherein, for example, a body weight value concerning an estimated body weight of the patient is transmitted to a patient module (20) intended for ventilating the patient, wherein the patient module (20) automatically selects ventilation parameters (52) fitting the body weight value on the basis of the body weight value and wherein the ventilation of the patient is carried out with the selected ventilation parameters (52).

Abstract: A mask device (10) for a ventilator (100) for ventilating a patient (11), has a breathing mask (12) for being positioned over the mouth (13) and over the nose (14) of the patient (11). A nasal cannula device (15) sends a ventilation gas into the nose (14) of the patient (11). A holding device (16) holds the nasal cannula device (15) at the breathing mask (12). The holding device (16) for the mask device (10), a ventilator (100) with the mask device (10) as well as a process for setting the mask device (10) are presented.

Abstract: A process for determining a carbon dioxide concentration in measured gas, includes branching off the gas from a main line (15) of a medical device (12) through a branch line (14) to a sensor unit (11) during an inhalation phase and an exhalation phase of a person (13). The gas is delivered by a fluid delivery unit that is adaptively set taking an airway pressure in the main line into consideration for generating a uniform volume flow and/or gas pressure of the measured gas in the branch line to the sensor unit during the inhalation phase and the exhalation phase. The concentration of carbon dioxide in the measured gas is determined by the sensor unit. A determination device (10), the medical device, a setting unit (26), a computer program product (29) and a storage device (30) with the program may each be provided to carry out the process.

Abstract: A sensor arrangement (10) for a medical device (12), includes a sensor unit (11) for determining a carbon dioxide concentration in the measured gas, a branch line (14) for branching off the measured gas from a main line (15) of the medical device (12) and for sending the branched-off measured gas to the sensor unit (11). At least one heat and moisture exchanger filter (16, 17) filters the branched-off measured gas. A medical device (12) with the sensor arrangement (10), an exhalation valve (25) for the medical device (12) as well as a process for determining a carbon dioxide concentration are also provided.

Abstract: A device (1), for a ventilation system (100), includes an inhalation valve (10) with an inhalation opening (11) for flow (301) of breathing gas (300) into a pressure chamber (110) to provide breathing gas in the pressure chamber for ventilating a patient (200). A closing element (12) is arranged movably, to close the inhalation opening to flow in a closed position (320) and to at least partially release flow in an open position (310). A transmission device (13) is connected via a connection element (14) to the closing element, to hold the closing element in the closed position in a starting position of the transmission device, such that the inhalation valve is normally closed. A control pressure source (130) provides a control pressure (PS) in a control pressure chamber (15) for the transmission device to move the transmission device out of the starting position by the control pressure.

Abstract: A micropump system (100) for a compressible fluid (102) includes a plurality of micropumps (110), rigid flow duct elements (120), a control unit (130), and one or two printed circuit boards (140). The micropumps have an intake opening (112) and an outlet opening (114). The rigid flow duct elements are connected to a respective micropump via a respective, elastically sealed port (122) and with the micropumps form a flow path (104) for the fluid. The one or two printed circuit boards are arranged and configured to electrically connect the control unit to the plurality of micropumps. Each micropump is rigidly fastened to the one or two printed circuit boards via a respective fastening device. A pressure build-up of the fluid flowing through the plurality of micropumps during the use, which is cascaded due to the plurality of micropumps, is provided at a system outlet (106) of the micropump system.

Abstract: A pump system (120) has a central pump unit (110), with which at least one hook-up unit (130). The at least one hook-up unit (130) is from a group of a plurality of hook-up units (130) that can be combined in modular form for setting an operating point of a pump (10) that forms the pump unit (110). A method uses such a hook-up unit (130) in a pump system (120) for setting an operating point of the pump unit (110) thereof. A medical device is provided with such a pump unit (110) or with such a pump unit (110) and at least one hook-up unit (130) combined with the pump unit (110).

Abstract: A connection device and process connect a patient-side coupling unit to a source/sink of a gas including oxygen. The connection device includes a valve device with a first valve (40.1) and with a second valve (40.2). A source-side fluid guide unit establishes a fluid connection between the source or the sink and the valve device. A patient-side fluid guide unit establishes a fluid connection between the patient-side coupling unit and the valve device. The valves are connected in parallel and are arranged between the two fluid guide units. A gas flows from the source through the first and/or second valve to the patient-side coupling unit or through the first and/or second valves to the sink. A control pressure is set at each valve. As a result, the time course of the volume flow downstream of the valve device follows a predefined time course.

Abstract: A process for operating a ventilator (12) and a ventilator (12) operating according to the process are provided. A pressure target value (pz) is determined during a phase of exhalation (48) as a function of a compliance (C) determined in relation to the lungs (14) of a patient being ventilated by means of the ventilator (12).

Abstract: A pump system (120) has a central pump unit (110), with which at least one hook-up unit (130). The least one hook-up unit (130) is from a group of a plurality of hook-up units (130) that can be combined in modular form for setting an operating point of a pump (10) that forms the pump unit (110). A method uses such a hook-up unit (130) in a pump system (120) for setting an operating point of the pump unit (110) thereof. A medical device is provided with such a pump unit (110) or with such a pump unit (110) and at least one hook-up unit (130) combined with the pump unit (110).

Abstract: An arrangement and process supply a patient-side coupling unit with a gas mixture including a first gas component and a second gas component. A first duct (K.1) directs the first gas component from a first source (E) to a mixing point (8). The second gas component flows from a second source (25) to a buffer reservoir (5) and from the buffer reservoir (5) through a second duct (K.2) to the mixing point (8). The gas mixture flows from the mixing point (8) through an inspiration duct (K.30) to the patient-side coupling unit. A pneumatic control line (28) provides a control fluid connection between the first duct (K.1) and the buffer reservoir (5). A pressure balancing is effected between the pressure inside (In.O2, In.k1) the buffer reservoir (5), the pressure in the first duct (K.1), and the pressure in the second duct (K.2).

Abstract: A device and to a process supply a patient-side coupling unit (9) with a gas mixture. The patient-side coupling unit is connectable to a patient (Pt). A first duct (K.1) guides a first gas component (air) from a first source (2) to a mixing point (8). A second source (20) provides a second gas component, which is guided to a front pressure inlet (V.3) of a pressure reducer (1). The pressure reducer provides the second gas component (O2) at a back pressure outlet (V.2). A time course of pressure at the back pressure outlet follows a time course of pressure at a reference point (11, 28.1) in the first duct. A second duct (K.2) guides the second gas component from the back pressure outlet to the mixing point. An inhalation duct (K.30) guides the gas mixture from the mixing point to the patient-side coupling unit.

Abstract: A measurement system (100) determines gas concentrations in a gas mixture of a gas sample by utilizing thermal conductivities and paramagnetic effects of thermal conductivities in the gas mixture involving data sets (203). A circuit arrangement provides measured values with an AC signal component and with a DC signal component to a calculation and control unit (200). An oxygen concentration in the gas mixture of the gas sample is determined based on the standardized AC signal components and a concentration of another gas in the gas mixture of the gas sample is determined based on the standardized DC voltage signal components. Output signals are generated by the calculation and control unit, which indicate the determined oxygen concentration and the determined concentration of another gas in the gas mixture of the gas sample.

Abstract: A patient module (10) is intended for use when ventilating a patient with a pressure source (24) that can be fluidically coupled via the patient module (10) to a patient interface (26), which can be connected to the airways of a patient. The patient module (10) includes a housing (12) and a valve section (14) in the housing (12) as well as an HME filter (30) spaced apart from the valve section (14). The HME filter (30) is located upstream of the valve section (14) in relation to an expiratory volume flow, so that the HME filter (30) divides an interior of the housing (12) into a dry area and an area coming into contact with the moisture carried along by the exhaled breathing gas. The valve section (14) is located in the dry area. A process for operating the patient module (10) includes calibration steps.

Abstract: A valve assembly, a ventilator, a process for operating a valve assembly and a computer program are provided. The valve assembly (10; 10a; 10b), for the ventilator (100), includes an inlet (12; 12a; 12b) configured for the inflow of a ventilation gas, an outlet (14; 14a; 14b) configured for the outflow of the ventilation gas and a volume flow control device (16; 16a; 16b) for the ventilation gas between the inlet and the outlet. The volume flow control device is configured to set the volume flow of the ventilation gas in a range between shut-off and a maximum volume flow and to provide an attenuation of a volume flow change during the opening, when the volume flow of the ventilation is increased, that differs from an attenuation occurring during the closing, when the volume flow of the ventilation gas is reduced.

Abstract: A reaction carrier (14), a measuring device (12) and a measuring method for measuring a concentration of gaseous/aerosol components of a gas mixture uses reaction material (48) which reacts in an optically detectable manner with at least one component to be measured or with a reaction product of the component to be measured. The reaction carrier includes a flow channel (42) with sections (43) and extends between connecting elements (44). A gas treatment element (47), in each of the sections, changes chemical or physical properties of the gas mixture flowing therethrough or reacts, depending on the chemical or physical properties. The sections are separated from each other in a gas-tight manner by a separating element (49). A coupling element (45) opens the separating element and establishes a connection between the sections when the coupling element is activated. The measuring device includes an activation element (25) to activate the coupling element.

Abstract: A respiratory device (10) includes at least one expiration valve (12) and/or at least one inspiration valve (14) with a valve drive (18) that is configured to influence a position of a closure element (20) of each valve (12, 14). A method for operating such a respiratory device (10) is also provided. The valve drive (18) acts on a valve chamber (24) and a volume in the valve chamber (24) determines the position of the closure element (20). The valve drive (18) includes a plurality of piezo pumps (40, 42), with at least one regular piezo pump (40) with a direction of action towards the valve chamber (24) and at least one inverse piezo pump (42) with a reverse direction of action.

Abstract: A method controls an expiratory gas flow at a user interface (16) of a ventilator (1) wherein the user interface (16) has an exhalation valve (11), which provides a positive end-expiratory pressure (PEEP). The method includes the following steps during a phase of exhalation: changing the positive end-expiratory pressure from a basic PEEP value (31) with the exhalation valve (11); returning the positive end-expiratory pressure to the basic PEEP value (31) with the exhalation valve (11); and determining an exhalation parameter. The method permits an adaptive change in the expiratory flow during the exhalation. Air trapping can be avoided, and it is possible to respond to changed exhalation parameters within one and the same phase of exhalation.

Abstract: A system (1) for ventilating patients includes a gas passage unit (2), which has a first inlet opening (6) with a fluid-communicating connection to a pressurized gas source (12, 13) and an outlet opening (9) connected to the first inlet opening (6) in a manner. A patient interface (3), for ventilation, includes an interface inlet opening (10). A gas line element (4) has a fluid-communicating connection to the outlet opening (9) and to the interface inlet opening (10). A controllable pressure change element (5) is provided between the first inlet opening (6) and the interface inlet opening (10). A second inlet opening (8) has a fluid-communicating connection to the gas line element (4). A control unit (7) controls the controllable pressure change element (5). A device or a system (1), which provides fully adequate ventilation with high performance with minimal expenditure for hardware, is provided.

Abstract: A micropump system (100) for a compressible fluid (102) includes a plurality of micropumps (110), rigid flow duct elements (120), a control unit (130), and one or two printed circuit boards (140). The micropumps have an intake opening (112) and an outlet opening (114). The rigid flow duct elements are connected to a respective micropump via a respective, elastically sealed port (122) and with the micropumps form a flow path (104) for the fluid. The one or two printed circuit boards are arranged and configured to electrically connect the control unit to the plurality of micropumps. Each micropump is rigidly fastened to the one or two printed circuit boards via a respective fastening device. A pressure build-up of the fluid flowing through the plurality of micropumps during the use, which is cascaded due to the plurality of micropumps, is provided at a system outlet (106) of the micropump system.