ARTIFICIAL LUNG VENTILATION DEVICE Russian patent published in 2021 - IPC A61H31/00 F16K31/30 

FIELD: medical technology.

SUBSTANCE: invention relates to medical technology, namely to an artificial lung ventilation device designed for simultaneous ventilation of up to n patients. The device includes a stationary stator equipped with n evenly distributed along the circle windows of angular magnitude γ_s with n inhalation tubes connected to them for each of the n patients. The device has a rotor made with the possibility of sliding along its inner surface, containing a compressed oxygen-air mixture under excessive pressure, equipped with mn+1 or mn-1 windows evenly distributed along the circle for direct or reverse ventilation, respectively, of the angular value γ_r=nδ/(1+1/α)-γ_s, where m is the multiplication factor - any natural number: m=1, 2, 3, … , δ - a device characteristic that depends only on the numbers m and n: δ=2π/n/(mn+1) - for direct ventilation, δ=2π/n/(mn - 1) - for reverse ventilation, α - the ratio of the duration of inhalation and exhalation. In this case, the rotor speed is f=ν/(mn+1) for direct ventilation, when the directions of rotation of the rotor and the supply of oxygen-air mixture coincide, and f=ν/(mn-1) - for the reverse ventilation, when these directions are opposite, where ν is the required respiratory rate. The stator is made in the form of a compression chamber-receiver, connected to the lower open end of the rotor. The upper end of the rotor is closed by a bearing circular plate - a power element that transmits torque to the rotor from the drive shaft, which rotates at a low frequency f, compared to the breathing frequency ν. The oxygen-air mixture from the receiver can enter the inhalation tubes only when the mn+1 or mn-1 windows of the rotor and n windows of the stator overlap, these stator windows on its outer surface are equipped with flaps regulating the height of these windows. The n inhalation breathing tubes connected to the n windows of the stator, individually designed for n patients, are equipped at the other ends with non-reversible valves designed to allow patients to exhale into the atmosphere.

EFFECT: technical result is the expansion of functionality, simplification of the design and increasing the reliability of the device.

2 cl, 5 dwg