A system for preventing cross-contamination in single-limb ventilators is described. In one embodiment, the system includes an airflow generator connected in-line to a humidifier, a first check valve and a patient interface by a gas flow circuit. A controller is electrically coupled to the airflow generator, and a cartridge is connected to the gas flow circuit between a first point downstream of the humidifier and a second point upstream of the patient interface. The cartridge includes a bacteria filter and the first check valve. A method for preventing cross-contamination in single-limb ventilators and a method for providing gaseous flow through a single-limb ventilator are also described.

A stand-alone continuous positive airways pressure, CPAP, apparatus having a face-mask and a connected electro-mechanical device to supply air to the face-mask is disclosed. The electro-mechanical device includes a pneumatic channel for flowing air to be delivered to the face mask and a control unit for managing the air pressure of the air inside the pneumatic channel. The CPAP apparatus includes a turbine fan, located in the electro-mechanical device housing, connected to the control unit for pressurizing atmospheric air. The pneumatic channel includes an inlet portion located upstream of the turbine fan to receive atmospheric air, and an outlet portion located downstream of the turbine fan to deliver the pressurized air to the face-mask through an outlet opening. The pneumatic channel also longitudinally extends from the inlet portion to the outlet portion.

A gas-driven, pressure-regulated ventilator (10, 210) provides support for spontaneous breathing and non-breathing patients. The ventilator provides short pressure cycled and constant flow ventilatory support that allows the patient to receive consistent and reliable ventilatory breaths. The ventilator is designed to allow a clinician to adjust Peak Inspiratory Pressure (PIP) and Positive End Expiratory Pressure (PEEP) values and the duration of inhalation and exhalation flows in a breath cycle to accommodate patient-specific ventilation needs.

An absorption arrangement (100) includes a CO2 absorber (4) and a water trap (2). Such an absorption arrangement (100) is used with a process for filtering carbon dioxide from a gas mixture by absorption. The gas mixture flows from a source through the absorption arrangement (100) to a sink in the following way: through a supply fluid guide unit (3), through a lower deflecting fluid guide unit (9), through the CO2 absorber (4), through an upper deflecting fluid guide unit (6), through a connecting fluid guide unit (33), through the water trap (2) and through a discharge fluid guide unit (34). The gas mixture flows vertically or obliquely upward through the CO2 absorber (4) and vertically or obliquely downward through the connecting fluid guide unit (33) to the water trap (2).

A respiratory treatment device including an OPEP (oscillating positive expiratory pressure) mechanism, a Huff Cough mechanism, a user interface, and a conduit leading from the user interface to the OPEP mechanism and the Huff Cough mechanism, wherein air flow through the conduit is selectively directed to the OPEP mechanism and the Huff Cough mechanism.

A ventilator including a housing; a gas inlet port disposed in the housing and adapted to be coupled to a gas source to receive a flow of gas; a valve assembly coupled with the gas inlet port for controlling flow of gas from the gas inlet port to a gas outlet port disposed in the housing and adapted for being coupled to a patient interface to fluidly couple the gas outlet port to the airway of a patient; a controller module disposed in the housing, the controller module comprising a controller operatively coupled with the valve assembly to control operation of the valve assembly; an airway pressure sensor positioned between the valve assembly and the patient interface to measure air flow output into flowing into the airway of the patient; wherein the pressure sensor is operatively connected to the controller module to control the operation of the valve assembly in response to changes in air flow output measured by the airway pressure sensor during use.

A ventilator includes electronic control circuitry configured to control a supply of breathing gas for a plurality of respiratory cycles, measure a volume received by the patient in each of the plurality of respiratory cycles, and determine, for each cycle of the plurality of respiratory cycles, a cycle score corresponding to a deviation between the volume of the cycle and a predetermined target volume. The determined cycle score can be selected from a predetermined number of cycle scores that span positive and negative numbers based on the deviation. A pressure step value can be determined based on a plurality of cycle scores corresponding to the plurality of respiratory cycles, and a current pressure of the breathing gas is adjusted by an amount corresponding to the determined pressure step value. The pressure step value may be generated by dividing a sum of the plurality of cycle scores by a sample size.

A connection device and process connect a patient-side coupling unit to a source/sink of a gas including oxygen. The connection device includes a valve device with a first valve (40.1) and with a second valve (40.2). A source-side fluid guide unit establishes a fluid connection between the source or the sink and the valve device. A patient-side fluid guide unit establishes a fluid connection between the patient-side coupling unit and the valve device. The valves are connected in parallel and are arranged between the two fluid guide units. A gas flows from the source through the first and/or second valve to the patient-side coupling unit or through the first and/or second valves to the sink. A control pressure is set at each valve. As a result, the time course of the volume flow downstream of the valve device follows a predefined time course.

A respiration device (1) supports cardio-pulmonary resuscitation (CPR) and a method for operating a respiration device (1) supports cardio-pulmonary resuscitation (CPR). The respiration device (1) has a control and regulation unit (7) in order to actuate an expiratory metering unit (3), and an inspiratory metering unit (2) such that, in a first phase, a current value of pressure is increased relative to a first pre-defined value (16) and such that, in a second phase, the current value of the pressure is reduced relative to the first pre-defined value (16).

Systems and methods for hypoxia delivery are provided. An apparatus for providing intermittent normoxia and hypoxia intervals includes a breathing component, a normoxia fluid source, a hypoxia fluid source, a valve, and a control system. The valve is configured to disrupt flow from at least one of the normoxia fluid source and the hypoxia fluid source and the control system is configured to cause the at least one valve to switch between delivery of fluid from the normoxia fluid source and the hypoxia fluid source while maintaining positive pressure at the breathing component.