Computational Fluid Dynamics Analysis Of A Novel Axial Flow Blood Pump With Two Counter-Rotating Impellers

Martín Chimenti, Lucas Varela, Eduardo de Forteza, Roberto Favaloro


Computational Fluid Dynamics (CFD) has been used for developing and
evaluating a novel axial flow blood pump. The pump embodiment includes two counterrotating
impellers with independent motorization. This device could be used as an
implantable pump for boosting blood circulation in patients whose hearts are not pumping
at an adequate cardiac output. The blood pump was designed for a flow rate of 5 L/min
and 100 mmHg of head pressure and a combination of counter-rotational speeds of 8400
rpm and 3900 rpm for the inlet and outlet impellers respectively. From the CFD results it
is concluded that an embodiment including two counter-rotating impellers is hydraulically

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