Effects of VAD Placement on 3D Fluid Flow in a Patient Specific Numerical Model of the Left Ventricle with Ischemic Heart Failure

Perschall, Markus; Spiegel, K.; Schenkel, Torsten; Oertel, Herbert

doi:10.1007/978-3-642-03882-2_162

Cited by 1 publication

(1 citation statement)

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“…Fluent is used for this part of the study as the VAD and the hemolysis prediction is to be implemented as part of a modular model of human heart flow (16,17) using Fluent for the flow simulation. This model is based on tetrahedral grids with grid motion (18).…”

Section: Methodsmentioning

confidence: 99%

The Progressive Wave Pump: Numerical Multiphysics Investigation of a Novel Pump Concept With Potential to Ventricular Assist Device Application

Perschall

Drevet

Schenkel³

et al. 2012

Artificial Organs

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This article describes the numerical fluid–structure interaction (FSI) validation of a new pumping concept and the possibility for application of a further developed type, as an implantable ventricular assist device (VAD). The novel principle of the so‐called progressive wave pump is based on the interaction of an elastic membrane actuated by forced excitation with a surrounding fluid and the pump housing. By applying forced vibrations to one end of the membrane, a transversal wave builds up and progresses to the far end generating both a positive pressure gradient and flow rate. Among others, two axisymmetric geometrical configurations are possible, namely the discoidal and the tubular design. The first one has been built as a physical prototype and is experimentally investigated. In addition, a corresponding numerical FSI model is set up and validated against the experimental findings. Based on this validated numerical method, further numerical investigations are conducted focusing on the development of a tubular progressive wave pump concept with regard to its potential for application as a VAD in the future. To address VAD‐relevant issues such as size, hydraulic performance, and blood trauma, corresponding numerical simulations involving macroscopic blood trauma models have been performed. Although being still in an early phase of development, the results are promising and indicate that the wave pump concept in its present state is feasible and can be further developed and investigated as a new type of blood pump.

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Section: Methodsmentioning

confidence: 99%