Disclosed is a respirator which comprises an electronic control device and a pneumatic main line in which the following are connected pneumatically: a respiratory gas source, a valve, a mixing chamber, a gas-dosing unit, and a supply line. The gas-dosing unit is configured to convey external air and/or oxygen and/or anesthetic gas into the mixing chamber, the respiratory gas source is configured to deliver respiratory gas to the supply line, the mixing chamber is configured to make available respiratory gas, the supply line is configured to supply the patient with respiratory gas, and the valve is configured to at least temporarily reduce a stream of respiratory gas to a patient.

Systems and methods are provided for detecting and sequestering waste anesthetic gases released by an anesthetic vaporizer. In one embodiment, a method for an anesthetic vaporizer installed in an anesthesia machine includes detecting an emission of waste anesthetic gases (WAGs) from the anesthetic vaporizer, and responsive to detecting the emission of WAGs, performing at least one of scavenging the WAGs and outputting an alert.

Disclosed is an apparatus for providing controlled flow of inhalation-air from at least an air-reservoir to a mask. The apparatus includes a control unit and a switch unit. The control unit controls the level of the inhalation-air flowing from the air-reservoir to the mask. The control unit includes a housing to receive the inhalation-air from the air-reservoir, plurality of ducts protruding from the housing to connect with the air-reservoir and with the mask and a valve configured to control the flow of inhalation-air from the plurality of ducts. The switch unit positions a valve to selectively open and close the plurality of ducts for regulating the flow of inhalation-air from the air-reservoir to the housing.

A device and to a process supply a patient-side coupling unit (9) with a gas mixture. The patient-side coupling unit is connectable to a patient (Pt). A first duct (K.1) guides a first gas component (air) from a first source (2) to a mixing point (8). A second source (20) provides a second gas component, which is guided to a front pressure inlet (V.3) of a pressure reducer (1). The pressure reducer provides the second gas component (O2) at a back pressure outlet (V.2). A time course of pressure at the back pressure outlet follows a time course of pressure at a reference point (11, 28.1) in the first duct. A second duct (K.2) guides the second gas component from the back pressure outlet to the mixing point. An inhalation duct (K.30) guides the gas mixture from the mixing point to the patient-side coupling unit.

An arrangement and process supply a patient-side coupling unit with a gas mixture including a first gas component and a second gas component. A first duct (K.1) directs the first gas component from a first source (E) to a mixing point (8). The second gas component flows from a second source (25) to a buffer reservoir (5) and from the buffer reservoir (5) through a second duct (K.2) to the mixing point (8). The gas mixture flows from the mixing point (8) through an inspiration duct (K.30) to the patient-side coupling unit. A pneumatic control line (28) provides a control fluid connection between the first duct (K.1) and the buffer reservoir (5). A pressure balancing is effected between the pressure inside (In.O2, In.k1) the buffer reservoir (5), the pressure in the first duct (K.1), and the pressure in the second duct (K.2).

A portable oxygen delivery system including an oxygen concentrator having a housing, a compressor mounted inside the housing, a sieve module located within the housing and in fluid connection with the compressor, the sieve module containing a zeolite for removing Nitrogen from air through a pressure swing adsorption process for creating concentrated oxygen, a power source attached to the housing and an oxygen controller device for electronically controlling the pressure swing adsorption process. The portable oxygen delivery system also preferably includes a blowing apparatus fluidly connected to the oxygen concentrator having a blower housing, a blower motor mounted inside the blower housing, a blower fan connected to the blower motor, a second power source attached to the blower housing and a blower controller device for electronically controlling the blower.

In alternative embodiments, provided are mechanical ventilators and methods for making and using them.

An airway pressure support system (2) includes a housing (4) having an air inlet opening (54), and a filter assembly (50) coupled to a plurality of receiving portions of the housing. The filter assembly is in fluid communication with the air inlet opening. The filter assembly includes a housing portion (62), a first filter media portion (64) attached to the housing portion, and first and second spring members (84, 86) attached to the housing portion, wherein the first and second spring members each have a floating portion and engage the plurality of receiving portions and cause a sealing force to be exerted against the filter assembly.

A ventilator (100) ventilates a patient (102) by a high-flow oxygen therapy via a tube system (104). The ventilator has at least one sensor element (110), at least one actuatable inhalation valve or exhalation valve (120) and a control unit (130). The sensor element is arranged and configured to determine and to output a measured variable (112) within the tube system. The measured variable indicates a gas flow within the tube system. The actuatable inhalation valve or exhalation valve is arranged and configured to make possible a flow of a breathing gas from a ventilation circuit (107) of the ventilator. The control unit regulates a ventilation pressure provided by the ventilator via the at least one sensor element and the at least one inhalation valve or exhalation valve such that a predefined maximum pressure is not exceeded in a predefined area (140) of the tube system.

A filter sterilization system includes an expiratory filter having filter material that collects pathogens present in the exhaled gas stream from a ventilated patient. A filter sterilizer includes an ultraviolet (UV) light source that is activated by the system to emit light towards the expiratory filter. Additionally, the system includes a ventilator coupled to a patient breathing circuit that provides a gas mixture from a gas source to the ventilated patient and transfers exhaled gases of the ventilated patient to the expiratory filter.