Left ventricular assist devices (LVADs) using rotary blood pump technology led to significant improvement of results in left ventricular failure. However, patients with concomitant right ventricular failure have not benefited from this new technology so far. We report on the first successful use of 2 HeartWare HVAD centrifugal pumps (HeartWare International, Inc, Framingham, Mass) in biventricu...

In order to discuss the surface pressure pulsation characteristics of magnetic-fluid sealing membrane centrifugal pump, this paper studies shaft end under different flow operating conditions pump based on combination numerical calculation and experimental verification. The results show that value film decreases with increase rate has periodic pulsation, period is time required for a single blad...

The effect of blood hematocrit (HCT) on a noninvasive flow estimation algorithm was examined in a centrifugal implantable rotary blood pump (iRBP) used for ventricular assistance. An average flow estimator, based on three parameters, input electrical power, pump speed, and HCT, was developed. Data were collected in a mock loop under steady flow conditions for a variety of pump operating points ...

In this paper, performance of centrifugal pump as turbine (PAT) is investigated numerically. Three different specific speeds are considered and three pumps are designed using diagrams from catalogues and CFturbo V.9 software. Next, models are analyzed by Ansys CFX 16 software and results are compared with those of CFturbo software. Also, a mesh study analysis for one case is performed in order ...

To investigate the effect of blade wrap angle on hydrodynamic radial force a single centrifugal pump, numerical simulation is conducted pumps with different angles. The external characteristics and pump was analyzed according to result. It found that, increase angle, head efficiency are improved, H-Q curve becomes steeper, also increased gradually, while high-efficiency area narrowed. has great...