PATIENT INTERFACE DEVICES Russian patent published in 2018 - IPC A61M16/06 

FIELD: medicine.

SUBSTANCE: cushion is designed for the patient interface device to supply the respiratory gas to the patient's airway, which contains a mask to feed gas into the nose and/or into the mouth limiting the volume of the mask. The cushion has a flexible pressure valve that extends inside the mask from the outer edge of the mask volume and is arranged to contact the patient's skin to provide at least a partial seal between the mask volume and the environment. The pressure valve comprises a cavity region to be positioned adjacent to the patient's skin and between the mask volume and the patient's skin. The pressure valve also comprises a gas-impermeable layer located above the said region. The said region of the cavity is subjected to a reduced pressure compared to the mask volume. The interface device and the patient interface unit for respiratory gas supply to the patient's airway are disclosed.

EFFECT: improve contact of the mask with the patient's skin.

9 cl, 7 dwg