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A Novel Interface for Hybrid Mock Circulations to Evaluate Ventricular Assist Devices

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9 Author(s)
Ochsner, G. ; Inst. for Dynamic Syst. & Control, ETH Zurich, Zurich, Switzerland ; Amacher, R. ; Amstutz, A. ; Plass, A.
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This paper presents a novel mock circulation for the evaluation of ventricular assist devices (VADs), which is based on a hardware-in-the-loop concept. A numerical model of the human blood circulation runs in real time and computes instantaneous pressure, volume, and flow rate values. The VAD to be tested is connected to a numerical-hydraulic interface, which allows the interaction between the VAD and the numerical model of the circulation. The numerical-hydraulic interface consists of two pressure-controlled reservoirs, which apply the computed pressure values from the model to the VAD, and a flow probe to feed the resulting VAD flow rate back to the model. Experimental results are provided to show the proper interaction between a numerical model of the circulation and a mixed-flow blood pump.

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Biomedical Engineering, IEEE Transactions on  (Volume:60 ,  Issue: 2 )