There is a ventilator for mechanical ventilation during a breathing cycle including an inhalation cycle and an exhalation cycle. The ventilator is configurable to be in fluid communication with a supply of a first fluid. The ventilator includes an inhalation pathway and an exhalation pathway. A first fluid injector is in fluid communication with the supply of the first fluid for injecting the first fluid. The inhalation pathway receives the first fluid injected by the first fluid injector. A controller is operatively connected with the first fluid injector and programmed to selectively actuate the first fluid injector to inject the first fluid, which is received within the inhalation pathway such that an inhalation pressure in the inhalation pathway is within a predetermined range during the inhalation cycle.

A respirator system includes a respirator with an air filter, a flow generator with a sensorless DC motor, a mask, a processor, a sensor, an electric power source, and a wireless transceiver. The respirator filters air, increase the pressure of the air, delivers the air to the mask at a pressure above ambient, gathers data with the sensor about operation of the respirator, and transmits the data. An intermediate electronic device is separate and remote from the respirator, and is configured to receive the transmitted data process the data, and re-transmit the data. A computer receives the data, processes the data and generates at least one report regarding the respirator or a user of the respirator.

A portable oxygen concentrator retrofit system and method in which an existing portable oxygen concentrator may be retrofitted to output an enriched oxygen gas at a flow rate suitable for use in a patient ventilation system without the need for an external source of compressed gas.

Systems and methods for generating and delivering nitric oxide are provided. In one aspect, a nitric oxide generator includes an inlet arranged to receive a gas including nitrogen and oxygen, an outlet, a pair of electrodes arranged downstream of the inlet and configured to generate nitric oxide from the gas, a pressure regulator configured to selectively adjust a pressure of the gas surrounding the electrodes, an accumulator in communication with the pressure regulator, a nitric oxide sensor arranged to measure a concentration of nitric oxide at the outlet, and a controller in communication with the pair of electrodes, the pressure regulator, and the nitric oxide sensor. The controller is configured to selectively instruct the pressure regulator to adjust the pressure of the gas surrounding the electrodes in response to the concentration of nitric oxide measured at the outlet by the nitric oxide sensor.

Methods and apparatus may implement controlled generation of oxygen enriched air in an oxygen concentrator while implementing control that reduces pneumatic imbalance between the concentrator's canisters, such as dynamic pressure imbalance or other pneumatic characteristic. One or more controllers may regulate operation of a compressor that feeds a pressurised air stream to the concentrator's canisters. This may regulate speed of the compressor to a speed set point for generating the pressurised stream. The regulating may involve generating a compressor control signal having a characteristic parameter such as a power parameter. The controller(s) may operate valve(s) in a cyclic pattern so as to produce oxygen enriched air in an accumulator. A cycle of the cyclic pattern may include a plurality of phases, where each of the plurality of phases has a duration. The controller(s) may then generate a dynamic adjustment to the duration(s) based on an evaluation of the characteristic parameter.

Systems and methods are provided for aerosolizing and delivering therapeutic substances in an electronic aerosol delivery device with airflow regulation. Calibrated airflow resistance settings enable adjustment and control of flow velocity and or flow volume of air, aerosolized air, and or entrained aerosol particles, through the device, for optimal aerosol delivery among diverse conditions and applications.

A respiratory apparatus includes components to permit different operations of the apparatus with different power supplies. For example, a respiratory therapy apparatus for controlling a respiratory therapy may include a power input circuit to receive a first power or a second power. The first power may be provided by a connectable low-power power supply and the second power by a connectable high-power power supply. A controller of the respiratory apparatus coupled to the power input circuit may be configured to detect one of the power supplies, and based on the detection, selectively activate one of a first mode of operation and a second mode of operation. The first mode of operation may be a non-therapy mode with the first power such as for a data setup or data transfer with the respiratory therapy apparatus and the second mode of operation may be a therapy mode with the second power.

A mask apparatus for a respiratory treatment can permit delivery of breathable gas to a user. In one example, the mask may employ a frame and cushion to form a seal for both mouth and nose. The frame may be adapted for coupling with a respiratory treatment apparatus so as to permit communication of a pressurized gas from the respiratory treatment apparatus. The cushion, which may be foam, and a frame component may be made in an overmoulding process that moulds the frame onto a pre- formed foam cushion. Such a moulding process may form a mechanical and/or chemical bonding of the foam and mask frame component. The mask frame component may be a shell of plenum chamber, such as for both nose and mouth. Various features of the cushion may further promote sealing and comfort for the under the nose design.

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).

Systems and methods for collecting breathing gas properties via a medical ventilatory filter and wirelessly transmitting the data to another device. For example, the filter includes a first housing enclosing filtration media for filtering breathing gases flowing through the filter, the first housing defining a first port and a second port exposed to the breathing gases; and a sensor assembly. The sensor assembly includes a first sensor coupled to the first port, the first sensor configured to capture measurement data for a first gas property of breathing gases flowing through the filter; a second sensor coupled to the second port, the second sensor configured to capture measurement data for a first gas property of the breathing gases flowing through the filter; and a second housing. The second housing includes a processor and communication circuitry operative to wirelessly communicate the sensor data to a computing device located remotely from the filter.