Abstract: A modular monitoring and ventilation system includes a standalone monitor unit for monitoring patient-related parameters that are indicative of the physiological status of a patient, which receives at least one signal indicative of such a patient-related parameter from at least one sensor and that displays information related to that signal on a display, and a standalone, portable pneumatic unit for ventilatory treatment of a patient by supplying breathing gas to the patient. The monitor unit and the pneumatic unit are able to placed in a paired state in which they are communicatively connected to each other for information exchange, and in which those units cooperate to provide ventilatory treatment to the patient, with operation of the portable pneumatic unit being controlled based on the signal that is indicative of the monitored patient-related parameter, received by the monitor unit from the at least one sensor.

Abstract: A gas regulating device for use in calibration of a gas analyzer has an inlet and an outlet, a valve arrangement comprising at least one valve, and valve regulator for regulating the at least one valve. The gas regulating device is intended to be connected between a calibration gas supply and a gas analyzer that is to be calibrated and the valve regulator is configured to regulate the at least one valve such that gas is allowed to flow through a gas flow path between the inlet and outlet only when a gas pressure in the gas flow path, between the at least one valve and the outlet, falls below a predetermined threshold value. The gas regulating device is used when calibrating side-stream gas analyzers in which case it reduces calibration gas consumption, prevents discharge of calibration gas into the ambient environment and prevents leakages jeopardizing correct calibration.

Abstract: A breathing apparatus for ventilating the lungs of a patient with breathing gas, has: a breathing circuit configuration; a mechanical ventilation system; a manual ventilation system provided with a manual ventilation bag; a manual ventilation valve for enabling manual ventilation of breathing gas from the breathing circuit; a pressure sensor devised to detect the pressure level in the breathing circuit; an electronically controlled expiration valve (40) that in a mechanical ventilation mode is controlled to control the pressure level in the breathing circuit according to a first set of predetermined control rules adapted to mechanical ventilation mode requirements; said electronically controlled expiration valve in a manual ventilation mode being coupled to enable ventilation of breathing gas from the breathing circuit by means of the manual ventilation system according to a second set of predetermined control rules adapted to manual ventilation mode requirements.

Abstract: The present invention relates to a gas regulating device (2A-E) for use in calibration of a gas analyzer (4). The gas regulating device comprises an inlet (8A) and an outlet (8B), a valve arrangement comprising at least one valve (11; 11A, 11B), and valve regulating means for regulating the at least one valve. The gas regulating device is intended to be connected between a calibration gas supply (3) and a gas analyzer (4) that is to be calibrated and the valve regulating means is configured to regulate the at least one valve such that gas is allowed to flow through a gas flow path (5B) between the inlet and outlet only when a gas pressure (P1) in the gas flow path, between the at least one valve and the outlet, falls below a predetermined threshold value.

Abstract: A breathing apparatus for ventilating the lungs of a patient with breathing gas, has: a breathing circuit configuration; a mechanical ventilation system; a manual ventilation system provided with a manual ventilation bag; a manual ventilation valve for enabling manual ventilation of breathing gas from the breathing circuit; a pressure sensor devised to detect the pressure level in the breathing circuit; an electronically controlled expiration valve (40) that in a mechanical ventilation mode is controlled to control the pressure level in the breathing circuit according to a first set of predetermined control rules adapted to mechanical ventilation mode requirements; said electronically controlled expiration valve in a manual ventilation mode being coupled to enable ventilation of breathing gas from the breathing circuit by means of the manual ventilation system according to a second set of predetermined control rules adapted to manual ventilation mode requirements.

Abstract: An injection vaporizer has a reservoir for liquid to be vaporized and a delivery conduit connected to the reservoir with an outlet for injecting liquid to be vaporized into a gas space, formed by a flow-through chamber. A pumping system is operable to transfer liquid from the reservoir to the outlet. A heater supplies thermal energy into the delivery conduit. A pressure generator generates an elevated delivery pressure within the delivery conduit and is operable with the heater to establish a heated pressurized liquid at the outlet.

Abstract: An anaesthetic machine has a gas flow system with a variable-volume gas container for breathing gas, a fresh gas system for supplying the fresh gas system with a flow of fresh gas and a control unit. The control unit controls the variable-volume gas container during a first phase of inspiration so that a flow of breathing gas is released and mixes with a flow of fresh gas from the fresh gas system. The control unit starts a second phase of inspiration if the flow of breathing gas from the variable-volume gas container ceases before inspiration has been completed. The control unit controls the anaesthetic machine during said second phase so that inspiration is maintained with a flow of fresh gas from the fresh gas system in order to achieve a system in which all breathing modes can be accommodated and gas consumption is minimized.

Abstract: An anesthetic apparatus has a control unit and a breathing circuit with a connector for fresh gas, a bellows system and an outlet valve. The anesthetic apparatus operates at least as an open system, the connector then constituting an inspiratory part of the breathing circuit and the bellows system and outlet valve constituting an expiratory part of the breathing circuit. In order to reduce the adverse impact of compressible volume in the expiratory section on the functioning of the anesthetic apparatus, the control unit regulates the bellows system during inspiration so that a counter pressure, largely corresponding to the pressure of fresh gas at the connector, is maintained in the expiratory section of the breathing circuit.

Abstract: An anaesthetic machine for connection to a patient's airways has a fan with an inlet and an outlet, a first system of flow paths connected between the fan's outlet and inlet, and a second system of flow paths connected between the fan's outlet and inlet. A fast system with wide variability with respect to operating modes is achieved by arranging a shunt valve at the fan's outlet in order to regulate the amount of gas flowing into the first system of flow paths and the second system of flow paths respectively, and a control unit is provided to control the shunt valve.

Abstract: A flow regulator, preferably in a respirator/ventilator, has a conduit through which a medium conduit flow is to be regulated flows and a choker valve arranged outside the conduit, the choker valve having pressure applicators arranged exactly opposite one another between which the conduit can be brought and act on the flow cross-section of the conduit such that they leave the flow cross-section of the conduit uninfluenced in a first limit position and press the conduit completely closed in a second limit position. In order to obtain a flow regulator of this type with a choker valve that is gentle on the conduit and which can also completely compress a conduit having a comparatively large flow cross-section, the pressure applicators are fashioned such that, when the conduit is compressed, both pressure actuators actively press it together from both, opposite sides.

Abstract: A breathing gas system, primarily intended for use during anaesthetization of patients, has a respiratory circuit, a drive gas apparatus and a pressure-transmitting bellows device, connected by a first space to the respiratory circuit and by a second space to the drive gas apparatus. When an outlet valve is regulated at the end of an expiratory phase to minimize the pressure difference between the first space and the second space, the respiratory circuit responds immediately at the next inspiratory phase when drive gas is sent to the second space. Minimizing the pressure difference also makes possible use of the pressure-regulated operating mode with the breathing gas system, and a rapid response to attempts at spontaneous breathing by the patient is achieved.

Abstract: An anesthesia system has a fresh gas source for supplying a defined flow of fresh respiratory gas to a respiratory circuit wherein the flow is regulated by a flow valve which is controlled on the basis of a flow measured by a flow meter. The anesthesia system is permits the flow meter to be calibrated while the system is in operation to permit the supply of a continuous, or substantially continuous, flow of fresh respiratory gas to the respiratory circuit.