The invention relates to a reusable device for CO2 removal, suitable for use in a breathing system, as part of an anaesthesia arrangement, and based on an electro-charging and discharging method. The invention is related to holders, containers and so-called canisters including any subparts of such devices and methods of operating used in an anaesthesia arrangement, wherein the CO2 removal takes place.

An arrangement and a process filter out at least one gas from a gas mixture. A filter unit (4) of the filter arrangement comprises an inlet and an outlet and is adapted to filter the gas out of the gas mixture while the gas mixture flows through the filter unit (4). The filter unit (4) takes up the gas and heats up in the process. A filter temperature sensor (46, 46.2) of the filter arrangement is adapted to measure at least once an indicator of the temperature in a first measuring area (MP, MP.2) inside the filter unit (4). Depending on the measured temperature, a message is generated and output in a form perceptible by a human being. This message includes information about the current state of the filter unit (4).

Disclosed is a respirator which comprises an electronic control device and a pneumatic main line in which the following are connected pneumatically: a respiratory gas source, a valve, a mixing chamber, a gas-dosing unit, and a supply line. The gas-dosing unit is configured to convey external air and/or oxygen and/or anesthetic gas into the mixing chamber, the respiratory gas source is configured to deliver respiratory gas to the supply line, the mixing chamber is configured to make available respiratory gas, the supply line is configured to supply the patient with respiratory gas, and the valve is configured to at least temporarily reduce a stream of respiratory gas to a patient.

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.

A cooling element for use within a cooling device of a closed-circuit respirator, includes an element housing, which has a liquid-tight cap and is filled with a coolant, which has a melting point below 50° C., especially below 45° C., preferably below 40° C. A sensor element is arranged in contact with the coolant within the element housing such that the sensor element can be moved in a direction of the gravity acting on the sensor element in the liquid state of the coolant during the use of the closed-circuit respirator by a user of the closed-circuit respirator.

A conduit for a breathing circuit includes a heater associated, at least in part, with a hydrophilic layer. The purpose of the heater is to evaporate any condensed liquid collecting in the conduit, which is first sucked up by the hydrophilic layer. The heated wick reduces the risk of collected water being passed to the patient and causing choking fits or discomfit. It is preferred that the heated wick lies freely in the conduit to settle at low points in the conduit where condensation may collect.

A control system, for controlling a closed-circuit respirator breathing gas circuit, includes a temperature sensor, a temperature-reading unit and with a control unit. The temperature sensor is configured to send a temperature signal in the presence of a corresponding temperature polling. The temperature signal indicates the temperature currently present in an area surrounding the temperature sensor. The temperature-reading unit is arranged in the closed-circuit respirator at a spaced location from the breathing gas circuit and the temperature sensor, and is configured to trigger the temperature polling at the temperature sensor by sending a polling signal, and to receive the temperature signal sent by the temperature sensor. The control unit is signal connected to the temperature-reading unit and is configured to determine the temperature indicated by the temperature signal in the area surrounding the temperature sensor and to output a control signal as a function of this temperature.

The present invention generally relates to systems and method for delivery of therapeutic gas to patients in need thereof using enhanced breathing circuit gas (BCG) flow measurement. At least some of these enhanced BCG flow measurements can be used to address some surprising phenomena that may, at times, occur when wild stream blending therapeutic gas into breathing gas that a patient receives from a breathing circuit affiliated with a ventilator. Utilizing at least some of these enhanced BCG flow measurements the dose of therapeutic gas wild stream blended into breathing gas that the patient receives from a ventilator can at least be more accurate and/or over delivery of therapeutic gas into the breathing gas can be avoided and/or reduced.

An apparatus and method for providing heat exchange in the lungs of the mammal during partial liquid ventilation are provided. The apparatus and method can control delivery and removal of partial liquid ventilation to the lungs of a mammal by responding to pressure change in the lungs to minimize danger of causing barotrauma to the patient.

The application describes a nasal sub-system (21) having: a hollow body (22) with an inner chamber (22a) and an inlet (22b) for receiving a respiratory gas, and a pair of nasal prongs (23, 24), in fluid communication with the inner chamber 22a of the hollow body 22, each nasal prong (23, 24) comprising a pair of inner channels (23b, 23c; 24b, 24c), each inner channels (23b, 23c; 24b, 24c) comprising a first channel (23b; 24b) and a second channel (23c; 24c) arranged in parallel, each first passage (23b; 24b) fluidly connecting the internal chamber (22a) of the hollow body (22) with a nostril (13, 14) of the patient (1), and each second passage (23c, 24c) fluidly connecting a nostril (13, 14) with a vent conduit (25) arranged in the hollow body (22) and in fluid communication with the atmosphere via at least one venting port (25a).