The present invention relates to a gas control device (10) for a ventilator, comprising a first gas channel (11) having a non-return valve (19), a second gas channel (12) and a switching apparatus (13), wherein the first gas channel (11) has an opening (14) for the outflow of gas with a seal (15) and a closure cap (16), wherein the switching apparatus (13) is configured to guide the gas stream of the first gas channel (11) past the non-return valve (19) in the event of a blockage/malfunction of the non-return valve (19). The present invention also relates to a ventilator comprising a gas control device (10) according to one of the above-mentioned features.

A ventilator for use with alternative hose systems. The ventilator comprises at least one respiratory gas source, at least one respiratory gas path, at least one appliance outlet, an appliance inlet and a gas control device for presetting the ventilator for use of the alternative hose systems by switching at least one switching mechanism The gas control device is configured for use of a hose system which is a leakage system, for opening the respiratory gas path (bypass) for a respiratory gas flow.

The system includes an air flow generator configured to deliver an air flow at a positive therapeutic pressure during the treatment, and an expiratory valve with an open pressure connected to the air flow generator. The open pressure is dependent on the therapeutic pressure from the air flow generator. The expiratory valve further exerts a back pressure upon each exhalation from the patient sufficient to create a pneumatic splint in the patient's respiratory tract. The exhalation from the patient has a first half followed by a second half, and the back pressure is varied such that during the start of the first half, the back pressure is between 0 and 50% of a peak back pressure, and increases to a peak back pressure in the second half.

A pressure regulating device for use with a breathing assistance and/or resuscitation apparatus, which conveys gases along a gases pathway to a patient, includes a mounting for connecting the pressure regulating device to a first outlet in fluid communication with the gases pathway. The mounting holds a valve member that selectively blocks, at least in part, the first outlet. A control member can be manipulated to adjust a property of the valve member. The valve member at least partially blocks the first outlet when the pressure of gases in the pathway is below a selected level, and allows at least a portion of the gases to flow out of the first outlet when the pressure of said gases is above the selected level. The property includes a selected level of pressure whereby manipulation of the control member adjusts the level of pressure between a maximum level and a minimum level.

A pressure regulating or pressure relief device comprises an inlet and an outlet chamber with an outlet. The inlet is in fluid communication with the outlet chamber. A valve seat is located between the inlet and the outlet. A valve member is biased to seal against the valve seat, and displaces from the valve seat by an inlet pressure at the inlet increasing above a pressure threshold to allow a flow of gases from the inlet to the outlet via the outlet chamber. The flow of gases through the outlet causes an outlet pressure in the outlet chamber to act on the valve member together with the inlet pressure to displace the valve member from the valve seat.

A respiratory device (10) includes at least one expiration valve (12) and/or at least one inspiration valve (14) with a valve drive (18) that is configured to influence a position of a closure element (20) of each valve (12, 14). A method for operating such a respiratory device (10) is also provided. The valve drive (18) acts on a valve chamber (24) and a volume in the valve chamber (24) determines the position of the closure element (20). The valve drive (18) includes a plurality of piezo pumps (40, 42), with at least one regular piezo pump (40) with a direction of action towards the valve chamber (24) and at least one inverse piezo pump (42) with a reverse direction of action.

Manual resuscitators, ventilation control assemblies, and methods suitable for delivering a volume-controlled tidal volume of air to a patient's lungs. Such a resuscitator has a piston that pushes a selected volume of air out of a ventilation chamber of a cylinder in response to pressurized gases being introduced into an actuation chamber of the cylinder. A volume adjuster adjusts the maximum tidal volume of patient air that the piston pushes out of the ventilation chamber by adjusting the maximum length of the piston stroke in the cylinder. The volume adjuster may have a bypass mode that allows the manual resuscitator to operate without volume control. The manual adjuster may also be pressure regulated by one or more pressure regulation valves.

The invention concerns an artificial resuscitation bag (5) comprising a deformable bag (54) comprising a gas inlet (54A) and a gas outlet (54B), a gas reservoir (59) comprising an outlet orifice (59A), a first conduit element (56) fluidly connected to the outlet orifice (59A) of the gas reservoir (59) and to the gas inlet (54A) of the deformable bag (54), a first one-way admission valve (57) arranged in the first conduit element (56) and fluidly communicating with the ambient atmosphere for allowing ambient air to enter into the first conduit element (56), and a second one-way valve (55) arranged in the first conduit element (56) between the first one-way admission valve (57) and the gas inlet (54A) of the deformable bag (54) for allowing gas to travel only from the first conduit element (56) to the deformable bag (54).

The invention is related to a portable rebreathing system for closed rebreathing. In order to minimize consumption of oxygen during rebreathing mode while safeguarding correct oxygen concentration, oxygen is added into the breathing passage using staged addition of oxygen via at least three individual oxygen supply valves 51, 52, 53. The two first oxygen supply valves are calibrated nozzles where one nozzle 51 is constantly delivering a predetermined amount of oxygen during normal breathing and the second nozzle 52 adds more oxygen at a second predetermined amount when the person to be treated is breathing heavily. The third valve is only opened manually and delivers a short burst of oxygen that fills the rebreathing system and its counter lung within seconds.

The present invention relates to an expiratory valve (10) of a ventilation device (100), comprising a valve body (12) having a fluid inlet (14) and a fluid outlet (16) for breathing air of a patient formed therein, said valve body (12) comprising a support (42) having a top side (46) on which a valve membrane (20) can be placed with an abutment area formed at the outer edge thereof, with the top side (46) of the support (42) having an uneven design.