Abstract: A gas tank arrangement for a breathing apparatus, including: a gas tank; an inlet valve configured to control a flow of gas into said gas tank; an outlet valve configured to control a flow of gas out of said gas tank and towards a patient; and a controller configured to control said inlet and outlet valves to maintain the gas within said gas tank at an overpressure for subsequent delivery to the patient, to control the outlet valve based on a parameter that is indicative of pressure within the gas tank, and to control the inlet and outlet valves to always maintain the pressure in the gas tank between a minimum pressure threshold value and a maximum pressure threshold value, wherein the minimum or maximum pressure threshold value is determined based on preset parameters relating to the dynamics of said outlet valve, or a desired minimum or maximum flow of gas out of the gas tank.

Abstract: A ventilation system includes a breathing apparatus which provides mechanical ventilation to a patient. The breathing apparatus is configured to perform an automated full recruitment manoeuvre, FRM, comprising a recruitment phase and a PEEP titration phase. In the PEEP titration phase the breathing apparatus is configured to gradually decrease the level of PEEP and to deliver a number of breaths at each of a plurality of PEEP levels, monitor at least one parameter from which an optimal PEEP of the patient may be determined, predict whether the optimal PEEP will be possible to reliably determine later on during the PEEP titration phase, and automatically abort the FRM manoeuvre if it is predicted that it will not be possible to reliably determine the optimal PEEP.

Abstract: The present invention relates to a system (1; 1A) for use in connection with mechanical ventilation of a patient (3), provided by a ventilator (5). The system comprises a sensor arrangement (7; 7A; 7B) configured to register at least one signal (SLP; SLP(TA), SLP(CT); Se1-5; Se11-12), herein referred to as LP signal, related to muscular activity of at least one muscle (17, 19) in the laryngopharyngeal region (9) of said patient (3). Furthermore, the system comprises at least one control unit (11; 11A, 11B) configured to control the operation of said ventilator (5) based on said at least one LP signal, and/or to cause display of information related to said at least one LP signal on a display unit (13A, 13B) for monitoring said patient (3) and/or the operation of the ventilator (5).

Abstract: A nasal patient interface arrangement is for transporting breathing gas from a pressurized gas supply to a patient. The arrangement provides a first bidirectional gas passage in contact with ambient air and receives nasally expired air. The arrangement includes an inspiratory air conduit connecting to a pneumatic unit. The arrangement also includes a nose adapter for bidirectional gas transport. The nose adapter is connected to a nose of the patient. The arrangement further includes a valve arrangement controlling the passage of gas through the first bidirectional gas passage. The arrangement provides a second bidirectional gas passage which is connected to the inspiratory air conduct, the nose adapter, and the first gas passage. The valve arrangement is substantially enclosed in the first bidirectional gas passage.

Abstract: A breathing apparatus (1) is disclosed comprising an inspiratory channel (3), an expiratory channel (4), a patient interface (5), an oxygen valve (13) and a blower (7) comprising blower driving means (9). The blower (7) is arranged to produce a flow of air to the inspiratory channel (3). The oxygen valve (13) is configured to selectively deliver a flow of oxygen to the inspiratory channel (3). The breathing apparatus further comprises a control unit (19) configured to control the blower driving means (9) so that the blower (7) produces substantially no flow of air to the inspiratory channel (3) during a time period (tp). The present disclosure further relates to a method (100) of controlling operation of a breathing apparatus (1), a computer program and a computer program product (300) for performing a method (100) of controlling operation of a breathing apparatus (1).

Abstract: A system for carbon dioxide (CO2) removal from a circulatory system of a patient includes a medical device providing extracorporeal lung assist (ECLA) treatment to the patient through extracorporeal removal of CO2 from the patient's blood; at least one control unit controlling the operation of the medical device so as to control a degree of CO2 removal obtained by the ECLA treatment; and a bioelectric sensor detecting a bioelectric signal indicative of the patient's efforts to breathe. The at least one control unit is configured to control the operation of the medical device based on the detected bioelectric signal.

Abstract: A system is disclosed that includes a breathing apparatus, a display unit and a processing unit that is operatively connected to the display unit. The processing unit is configured to provide a graphical visualization on the display unit. The graphical visualization in turn includes a combination of a target indication for at least one ventilation related parameter of a ventilation strategy for a patient ventilated by the apparatus, and a reciprocating animation of the at least one ventilation related parameter relative the target indication. The target indication is for instance based on input of a user, such as an operator of the breathing apparatus. Alternatively, or in addition, it may be a default value stored on a memory unit being operatively connected to the processing unit. Alternatively, or in addition, the target indication is based on a measurement value of said patient's physiology or anatomy.

Abstract: A medical device measures a pressure of a pressurized breathing gas and includes a pressure sensor arranged at a point of measurement and measures the pressure of a sample gas at a sampling point. The sampling point and the point of measurement are connected by a pressure sampling tube in which a pressure wave of the sample gas can propagate from the sampling point to the point of measurement. The tube has a sampling tube volume and an acoustic impedance. The device further includes a damping arrangement fluidly communicating with the tube. The damping arrangement includes a flow restrictor and a receptor chamber arrangement. The receptor arrangement includes a receptor chamber which receives the pressure wave. The restrictor correlates to the acoustic impedance to prevent acoustic resonance in the tube. The receptor chamber correlates at least to the tube volume to prevent acoustic resonance in the tube.

Abstract: A breathing apparatus includes a control unit configured to control operation of the breathing apparatus based on at least a first input value and a second input value. The breathing apparatus also includes a graphical user interface connected to the control unit. The control unit is configured to display a visual output on the graphical user interface including an area defined by a first axis and a second axis. In addition, the breathing apparatus includes an input unit configured to provide selection of a portion of the area. The control unit is configured to set the first input value in response to the position of the selected portion relative the first axis and to set the second input value in response to the position of the selected portion relative the second axis.

Abstract: A method, a computer program and a breathing apparatus relates to determination of at least one physiological parameter including the neuromechanical efficiency [NME] of a patient being mechanically ventilated by the breathing apparatus. This is achieved by obtaining samples of an airway pressure (Paw), a patient flow (Ø), a change in lung volume (V) caused by the patient flow, and an electrical activity of a respiratory muscle of the patient, during ventilation of the patient at a first level of ventilatory assist and a second and different level of ventilatory assist, and determining the at least one physiological parameter, including NME, from the airway pressure samples, the patient flow samples, the samples of the change in lung volume, and the samples of the electrical activity of the respiratory muscle, obtained at the different levels of ventilatory assist.

Abstract: A breathing apparatus 1 is disclosed. The breathing apparatus 1 has one or more electronic processors 2 and a touch screen 3 communicatively coupled to at least one of the processors 2. The processor 2 is configured to provide a user interface 4 on said touch screen 3 for modification of at least one operational parameter of said breathing apparatus 1. In some embodiments, the user interface 4 includes at least two touch sensitive display areas on the display area of the touch screen for modification of the operational parameter by an operator of the breathing apparatus. Each of the two touch sensitive display areas is dedicated for different types of user interaction, i.e. different user interaction modes are provided for by each of the two different display areas.

Abstract: An anesthetic breathing apparatus and system, having a patient circle system for re-breathing exhaled gases by a patient a volume reflector, a fresh gas delivery line, and a gas sensor unit arranged to measure a gas stream upstream a fresh gas connection and downstream said reflector unit. The gas sensor unit provides a signal for detection of a reflector driving gas (RDG) crossing over the volume reflector during inspiration based on at least one property of the gas stream measured by the gas sensor unit. Appropriate action may be taken based on this measurement, for instance in disclosed methods.

Abstract: A system is for alarm management in connection with a lung recruitment manoeuvre performed by a breathing apparatus on a mechanically ventilated patient. The system is configured to obtain information on at least one optimized ventilation setting for the patient, determined during the lung recruitment manoeuvre, and to automatically initiate at least one alarm setting for a period of ventilation following the recruitment manoeuvre, based on the optimized ventilation setting.

Abstract: A ventilation system includes a breathing apparatus which provides a mechanical ventilation to a patient. The breathing apparatus is configured to perform an automated full recruitment manoeuvre, FRM, comprising a recruitment phase and a PEEP titration phase, wherein the PEEP titration phase is a phase of stepwise decrease in PEEP from a maximum PEEP level to a minimum PEEP level, via one or more intermediate PEEP levels. The breathing apparatus is configured to deliver a number of breaths at each PEEP level, and to monitor a parameter indicative of a potentially harmful level of ventilation during the PEEP titration. The breathing apparatus is further configured to automatically decrease PEEP to a lower PEEP level when the monitored parameter reaches a first threshold value.

Abstract: In a method and system of regulating multiple anesthetic agents in a breathing circuit of an anesthetic breathing apparatus is disclosed, a primary anesthetic agent added to the breathing circuit is regulated to a set desired value of the amount of the primary anesthetic agent, and a secondary anesthetic agent in the breathing circuit is regulated to an amount of said secondary anesthetic agent that it is equal to or less than a defined threshold level, e.g. of the concentration, of the secondary anesthetic agent.

Abstract: The present disclosure relates to a method for determination of cardiac output or EPBF of a mechanically ventilated subject. The method comprises the steps of introducing a change in the effective ventilation of the subject, measuring expiratory flow and CO2 during a sequence of analyzed breaths during which the effective ventilation of the subject varies, and determining the cardiac output or EPBF of the subject using the flow and CO2 measurements. The method further comprises the steps of measuring also a relative variation in cardiac output or EPBF during the sequence of analyzed breaths, and using the relative variation in the determination of cardiac output or EPBF.

Abstract: A breathing apparatus has a first delivery device for adding a volume of a substance to a gas flow, the delivery device having a gas inlet and a gas outlet. A unit monitors a presence of the substance in a gas downstream the delivery device using a first sensor unit at the gas outlet that provides a first measurement value based on an acoustic property of a gas in a first conduit. A second sensor unit at the gas inlet provides a second measurement value based on an acoustic property of a gas present in the second conduit. A control unit determines the presence of the substance based on the first measurement value or based on a comparison of the first measurement value and the second measurement value.