Abstract: An apparatus for assisting with ventilating a patient breathing in successive cycles, each of the cycles includes a phase of inhalation and a phase of exhalation. The apparatus includes a pressurized gas source, an outlet orifice of the gas source supplies a stream of pressurized gas. The apparatus also includes a gas stream distribution unit that has a transmission circuit which connects the gas source to a main inhalation pipe. The apparatus further includes an inhalation valve for regulating the gas stream and which is interposed in the transmission circuit and is controlled by a control circuit of the apparatus particularly as a function of the values of the flow rate inhalation valve is produced in the form of a rotary directional-control valve.

Abstract: The invention proposes an apparatus (10) for assisting with ventilating a patient breathing in successive cycles, each of which comprises a phase of inhalation and a phase of exhalation, of the type comprising:

Abstract: The invention provides apparatus for assisting with the ventilation of a ient, which includes a source (10) of pressurized gas, a transmission circuit including a main inhalation conduit (14) connected to a mask (19) worn by the patient (20), and a secondary exhalation conduit (28), a flow regulating valve (16), and an exhalation valve (30), characterized in that the regulating valve (16) includes means (52) for maintaining a residual flowrate under a reduced pressure in the main inhalation conduit (14) during each exhalation phase.