PERFUSION PUMP OF PERISTALTIC ACTION Russian patent published in 1998 - IPC

FIELD: medical engineering. SUBSTANCE: blood transporting flexible tubes 12 having flat cross-section with input and output canals 13 and 14 are hermetically mounted in the cavity of pump chamber 6 with rarefied gas medium in the direction of traveling magnetic field. Pump operating organ interacting with the traveling magnetic field and separating pump chamber 6 from driving chamber 7 with pressurized gas medium is manufactured as flexible diaphragm 8 being passive with respect to magnetic field and elastic flexible ferromagnetic member 9 placed between the diaphragm and blood transporting flexible tubes. Detachable hollow casing of flat or cylindrical shape is manufactured to enable simultaneous change of single use blood transporting flexible tubes 12 by means of folding-back levers or differential threaded unions 19. Exhaust openings 21 on the hollow pump casing connect the pump chamber cavity with the ambient medium. Cavities of pump chamber 6 and driving chamber 7 allow communication to buffer volumes being balloons with gas medium. EFFECT: enhanced effectiveness of artificial blood circulation. 7 cl, 7 dwg