The invention relates to a gas delivery apparatus comprising an internal gas passage, a deformable reservoir, a valve device arranged upstream of the deformable reservoir and a control unit with microprocessor controlling the valve device in order to set or adjust the gas flow. A pressure sensor performs gas pressure measurements in a respiratory mask and supplies them to the control unit. The control unit compares the pressure measurements to a pressure threshold value and controls the valve device in order to adjust the gas flow as a function of this comparison, particularly in order to increase the flow when the pressure measured is below the threshold value.

An inhaler device for pulmonary delivery of at least one substance from a drug dose cartridge to an inhaling user, including: a first conduit for conducting a carrier airflow to a proximal opening of a mouthpiece for use by the user; a holder configured to position the dose cartridge within the carrier airflow; and a second conduit for conducting a shunting airflow to the mouthpiece without passing through the dose cartridge position. In some embodiments, a controller connected to a valve controls a rate of carrier airflow, for example by controlling the shunting airflow, based on a sensor indication of airflow rate and a target airflow profile.

The embodied invention is a new inspiration/expiration ventilator flow design, with a constant inspiration flow and intermittent-concurrent expiratory flow based on lung pressure setpoints. This mode is possible by using a new dual lumen tube inserted into a patient Trachea. Additionally, the control provides support for patient initiated breathing which is initiated by a lung pressure drop. This control provides continuous and gentle recruitment of lung alveoli.

Therapy gas delivery systems that provide run-time-to-empty information to a user of the system and methods for administering therapeutic gas to a patient. The therapeutic gas delivery system may include a gas pressure sensor attachable to a therapeutic gas source that communicates therapeutic gas pressure data to a therapeutic gas delivery system controller, a gas temperature sensor positioned to measure gas temperature in the therapeutic gas source that communicates therapeutic gas temperature data to the therapeutic gas delivery system controller, at least one flow controller that communicates therapeutic gas flow rate data to the therapeutic gas delivery system controller, at least one flow sensor that communicates flow rate data to the therapeutic gas delivery system controller, and at least one display that communicates run-time-to-empty to a user of the therapeutic gas delivery system. The therapeutic gas delivery system controller of the system includes a processor that executes an algorithm to calculate the run-time-to-empty from the data received from the gas pressure sensor, temperature sensor, flow controller and flow sensor, and directs the result to the display.

A gas mixing system that includes first and second flow assemblies and an exhaust gas outlet. Each of the first and second flow assemblies include a plurality of on/off valves with different flow rate values and a proportional valve. The first flow assembly is configured to have a first gas flowed therethrough and the second flow assembly is configured to have a second gas flowed therethrough. The output of the first flow assembly is combined with the output of the second flow assembly and the mixed gases exit through the exhaust gas outlet. The gas mixing system can be used in a ventilator assembly.

A fluid delivery system provides fluid, such as supplement oxygen, to a patient in response to inhalation. The fluid delivery system includes a valve assembly that is triggered by sensing onset of inspiration by measuring a change in temperature of air flow in a nasal or oral cannula, mask or helmet.

A mouthpiece, the mouthpiece is made of a conformable material and has a breathing cavity extending there through. The mouthpiece has a pair of teeth slots for holding the mouthpiece between teeth and an ergonomic shape that seals with lips. The mouthpiece is a connector that allows for easy attachment of a breathing tube. The mouthpiece can be combined with various tubes, valves and filters to create a variety of breathing systems.

A breathing apparatus (1) is disclosed that is adapted to determine a transpulmonary pressure in a patient (125) when connected to said breathing apparatus. A control unit (105) is operable to set a first mode of operation for ventilating said patient with a first Positive End Expiratory Pressure (PEEP) level; set a second mode of operation for ventilating said patient with a second PEEP level starting from said first PEEP level; and determine said transpulmonary pressure (Ptp) based on a change in end-expiratory lung volume (ΔEELV) and a difference between said first PEEP level and said second PEEP level (ΔPEEP). Furthermore, a method and computer program are disclosed.

A ventilation therapy apparatus and a method for controlling the ventilation therapy apparatus. The ventilation therapy apparatus includes: a main body, a respiratory pipe, a patient interface, an oxygen supply module, an oxygen proportional valve and a control module; a first end of the respiratory pipe communicates with an output end of the main body; a second end of the respiratory pipe is connected to the patient interface, the oxygen supply module is connected to the main body through the oxygen proportional valve, the control module is configured for detecting output parameters of the main body, and when it is determined that the main body is in a preset state, the control module controls the oxygen proportional valve to open at a corresponding preset opening degree according to the output parameters, and controls the fan of the main body to run at a corresponding preset rotating speed.

The invention relates to a respiratory device (10) for the artificial respiration of a patient (12), comprising:—a respiration gas source assembly (15, 62),—a flow-changing device (16),—a humidifier device (38) which is designed to increase the value of the absolute humidity of the inspiratory respiration gas flow (AF), said humidifier device (38) having a liquid store (40) and an evaporation device (76) with a variable output for this purpose,—a respiration gas line assembly (30) in order to convey the inspiratory respiration gas flow (AF) from the dehumidifying device (38) to the patient (12),—a flow sensor (44) which detects the value of the respiration gas flow (AF), and—a controller (18) which is designed to control the operational output of the evaporation device (76) depending on a specified target humidity of the respiration gas and depending on signals of the flow sensor (44), the proximal end (30a) of said respiration gas line assembly (30) having a coupling formation (44a) for coupling the respiration gas line assembly (30) to a patient interface (31) that transfers respiration gas to the patient (12). According to the invention, the controller (18) is designed to detect a sequence state of the respiration situation downstream of the coupling formation (44a) in the inspiratory direction depending on operational parameters of the respiratory device (10) and change the operational output of the evaporation device (76) depending on the result of the detection