AIR-VALVE MEMBRANE PUMP Russian patent published in 2010 - IPC A61M1/06 

FIELD: medicine.

SUBSTANCE: there is disclosed mode of operation of a suction pump, particularly of an exhaustion membrane pump. The suction pump is provided with an air valve with an air element which opens an air vent in cyclic intervals and then tightly closes the specified air vent. At first, the air element is lifted with keeping a partial initial opening of an air vent, to open either a major part of the air vent, or said air vent as a whole. There are disclosed versions of the exhaustion suction pump that is characterised by design of the air element and safety valve.

EFFECT: simplified assembly and sterilisation and higher reliability.

31 cl, 13 dwg