Provided is a filtering facepiece respirator. The respirator includes a mask body having an anterior side portion, a posterior side portion, a middle portion, a first side portion, a second side portion, a top side portion, a bottom side portion and outer edge portions. The respirator further includes a primary port positioned at the anterior middle portion of the mask body and a detachable primary port adapter which is positioned over and engages the primary port. The respirator may further include an oxygen port and oxygen port adapter and a luer port and luer port adapter.

A gas separation system for controlling a concentration of a first gas species and a second gas species in an outlet gas comprises a splitter unit. The splitter unit comprises a gas membrane system having a gas inlet port. The gas inlet port is in fluid connection with an air intake. A membrane is a selective barrier and allows some things to pass through but stops others.

The present disclosure provides a CPAP mask with side ports for providing continuous positively pressurized air to a patient. The CPAP mask includes a mask body, a plurality of strap holders, and a cushion seal. The mask body includes a left side wall, a left port, a front face, a right side wall, and a right port. In addition, the left side wall has a first through-hole. Further, the left port is on the left side wall. Furthermore, the front face of the CPAP mask is a transparent member. Moreover, the right side wall has a second through-hole. Also, the right port is on the right side wall. Also, the plurality of strap holders is on the left side wall and the right side wall.

A protective headgear includes a main body (e.g., face mask) that is worn over the face. The main body has an inhalation port that is for fluid coupling to an inhalation gas source and at least one exhalation port. The headgear includes an HME unit that has an inhalation leg that is in fluid communication with the inhalation port and a top leg that is in fluid communication with the inhalation leg and the at least one exhalation port. The top leg has an open window formed therein. The HME unit further includes an HME membrane that is disposed within the top leg adjacent the open window such that the HME membrane completely covers the open window.

A ventilator device for at least supporting artificial ventilation of patients, having: —a device housing, a functional arrangement which is accommodated in the device housing in an operational position and which has at least one control device as functional unit, an input/output device provided on the device housing in an arrangement position; wherein: the input/output device is connected to the control device through an opening in the device housing for signal transmission; the input/output device includes a locking formation, and a locking counter-formation is provided in the interior of the device housing; the locking formation is in a locking form-fitting engagement with the locking counter-formation, which prevents removal of the input/output device from the arranged position thereof in a lifting direction away from the device housing; at least one formation from the locking formation and locking counter-formation is movable out of a release position along a movement path transversely with respect to the lifting direction into a locking position; in the release position there is no locking form-fitting engagement between the locking formation and the locking counter-formation, and in the locking position the locking form-fitting engagement is produced.

Systems and methods for filtration of expiratory gases are disclosed. In an example, the technology relates to a method for replacing expiratory filters of a ventilation system without breaking a breathing circuit. The method may include opening a first channel and closing a second channel such that expiratory gases flow through a first filter coupled to the first channel; closing the first channel and opening the second channel such that the expiratory gases flow through a second filter coupled to the second channel; and while the expiratory gases are flowing through the second channel, replacing filter media of the first filter while maintaining pressure in the breathing circuit.

A sensor arrangement (10) for a medical device (12), includes a sensor unit (11) for determining a carbon dioxide concentration in the measured gas, a branch line (14) for branching off the measured gas from a main line (15) of the medical device (12) and for sending the branched-off measured gas to the sensor unit (11). At least one heat and moisture exchanger filter (16, 17) filters the branched-off measured gas. A medical device (12) with the sensor arrangement (10), an exhalation valve (25) for the medical device (12) as well as a process for determining a carbon dioxide concentration are also provided.

A safety breathing apparatus has a sensor for measuring the difference in pressure between two point 1a, 1b in the gas delivered to a head unit 9. The sensor is used to measure the difference in the pressure of the gas supplied through the apparatus between the two points in the gas flow, and the pressure difference is then used to calculate the gas flow rate.

A respirator mask liner is provided for positioning between a respirator mask and the face of a wearer. The mask liner includes a flexible sheet material having an outer perimeter edge portion and a hole that is spaced inwardly from the outer perimeter edge portion. At least one tab projects outwardly from portions of the perimeter edge portion, and may be unitarily formed with the sheet material. The mask liner is configured so that when it is to be placed between the face of the wearer and the respirator mask, the tab or tabs project outwardly beyond the gasket portion of the respirator mask, so that the tabs may be used for adjusting the liner or securing the liner to the mask. Optionally, the mask liner has a surface texture with a ribbed and undulating pattern of raised portions, and/or incorporates an anti-microbial substance.

A ventilator apparatus includes a linear electro-mechanical actuator that interfaces with a self-inflating bag including an inlet configured to receive air and an outlet configured to expend the air. A three-way valve is coupled to the outlet via a first flowmeter, an ambient environment via a second flowmeter, and a patient via an endotracheal tube. The first and/or second flowmeters are coupled to pressure transducer(s). A control unit is coupled to the linear electro-mechanical actuator and the first and second flowmeters and includes a control panel, memory including programmed instructions stored thereon, and processor(s) configured to execute the stored programmed instructions to set an inhalation time and an exhalation time. A current inspiratory pressure and a current tidal volume are obtained from the pressure transducer(s) and/or the first flowmeter. A stroke of the linear electro-mechanical actuator is then controlled to facilitate inspiratory and expiratory phases of a respiratory cycle.