DEVICE FOR SUPPLYING OF MICRO-QUANTITIES OF A FLUID Russian patent published in 2018 - IPC A61M5/175 A61M5/168 F04B43/02 

FIELD: medicine.

SUBSTANCE: device relates to a medical equipment, namely to a device for supplying micro-quantities of a fluid. Device includes an electric drive, on the rod of which a coupling is mounted, made with possibility of connection to a magnet located in the metering pump separating diaphragm, inside the suction chamber. Suction chamber is located in the body of the metering pump. Metering pump is installed in the electric drive transitional casing and is fixed with a fixing latch. Pump comprises a discharge line connected to the outlet valve and a suction line connected to the suction chamber. Pump includes a displacement chamber with a working diaphragm and a central opening in the working diaphragm connected to the suction chamber. Pump also includes a suction chamber with a separating diaphragm and an output valve with an outlet valve diaphragm connected to the displacement chamber through the displacement chamber outlet channel and the outlet valve diaphragm. Suction chamber separating diaphragm surface is made corrugated. On the surface of the diaphragm outlet valve facing the displacement chamber body, by the center of the diaphragm a circular protrusion is formed with a cavity inside, which is interfaced with the central channel of the displacement chamber. Outlet valve diaphragm contains at least 4 openings. Displacement chamber volume exceeds the displacement chamber outlet channel volume by at least 5 times.

EFFECT: technical result is an increase in the outlet pressure created by the pump without additional increase in power consumption, ensuring reliable sealing of the outlet chamber and the displacement chamber and reliable dosing of the liquid medium.

1 cl, 5 dwg