FIELD: medicine. SUBSTANCE: flexible diaphragm divides the housing into working and body cavities filled with non-conducting fluid medium. The inductor of the travelling magnetic field is made three-phase. The body cavity is filled with magnetic liquid and is separated from the working chamber by a flat diaphragm. Each phase of the inductor is powered through gates from the power supply with the frequency of less than 3 Hz and more than 1.5 Hz. EFFECT: enhanced efficiency of pumping over the non-conducting liquids. 1 dwg
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