SAFETY VALVE Russian patent published in 2018 - IPC A61M1/00 A61M1/06 F16K15/14 F16K24/06 G05D16/06 

FIELD: human vital needs satisfaction.

SUBSTANCE: valve for controlling the flow of medium from the first system to the second system comprises a deformable dome-shaped structure forming a reservoir. The valve cover includes the first connecting hole for connecting the valve to the first system and a contact element for interacting with the flow path hole to open and close it. The valve base is hermetically connected to the valve cover and to the dome-shaped structure and includes the second connecting hole for connecting the valve to the second system. The deformable dome-shaped structure is configured in such a way that it is deformed in the open position of the valve, and the flow path hole is not connected to the contact element so as to allow the medium to flow from the first system to the second system through the first and second connecting holes and the flow path hole. In the closed position of the valve, the deformable dome-shaped structure has its original dome shape, and the flow path hole is connected to the contact element and is thus closed. A pumping device for transporting the medium and a breast pump device for extracting milk from the breast of a nursing woman are disclosed.

EFFECT: ensuring reliable vacuum control.

14 cl, 6 dwg