The Left Ventricular Assist Device has many varying designs on the marketplace. Replicating the functionality both numerical and experimental of these varying designs in the market place will be beneficial to the medical community, due to the continued presence of heart failure as the leading cause of mortality in the world. The task of mimicking LVAD designs is carried out through the development of a computational model using a Simscape/Simulink platform based on published performance curves of the Jarvik 2000 and HeartMate II, the two common LVADs in the market. The data on the published performance curves are extracted at the discrete points on the graph rather than at the interpolated points with the aid of Datathief program. Datathief is a free program that can be used to extract data from graphs and pictures as long as they are in jpg, jpeg, or png format. A model of the two LVADs were designed using blocks from the Simscape/Simulink library to mimic the working condition of the human heart. A centrifugal pump block from the library is used with the extracted data and a model is simulated at different pump speeds. A matching output for both DP and Q is obtained and compared with original published performance curves. The output obtained confirms similarities between the simulated model and the published performance curves. This ability to replicate performance of these pumps enables investigations into their safety under various operating conditions.
|Advisor:||Taylor, Charles E.|
|Commitee:||Guillory, John, Williams, Wesley|
|School:||University of Louisiana at Lafayette|
|School Location:||United States -- Louisiana|
|Source:||MAI 57/05M(E), Masters Abstracts International|
|Subjects:||Biomedical engineering, Mechanical engineering|
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