Hemodynamic flow loops are widely used for research on causes and cures of cardiovascular diseases. They replicate physiological blood flow pulsatility in vitro. Many different pump types exist for such flow loops. The variety of the flow loop types shows the lack of one concept that satisfies all requirements, which are ease of handling and sterilization, flexible and accurate realization of various profiles, low shear rate exerted on fluid, low amount of circulating fluid. This paper experimentally proves the concept of a new type of pulse damping/pulse generating device that can be used for flow loops that are operated with a peristaltic pump. The pulse generating device fulfills the double function of damping the undesired pulsatility of the peristaltic pump and injecting a desired pulsatility that replicates the flow profile delivered by the heart. The injection of the desired pulsatility is achieved by modulation of air pressure in a damping device. The experimental results show that it is possible to achieve the dual function in one device. An electromagnetic flow sensor provides the feedback for the air pressure control and a high-response flow control valve controls the pressure in the pulse damper/generator. The response time and accuracy of the sensor proved to be critical for achieving the objective. With the limitations of the relatively cheap components used for this functional prototype, the mean error in the flow rate signal could be kept below 10% for a simulated adult pulse rate of 60bpm.
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ASME/BATH 2017 Symposium on Fluid Power and Motion Control
October 16–19, 2017
Sarasota, Forida, USA
Conference Sponsors:
- Fluid Power Systems and Technology Division
ISBN:
978-0-7918-5833-2
PROCEEDINGS PAPER
Experimental Study on Active Pneumatic Damping of Pulsatile Flow Delivered From Peristaltic Pump Available to Purchase
Elias Asmar,
Elias Asmar
American University of Beirut, Beirut, Lebanon
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Gilles Bejjani,
Gilles Bejjani
American University of Beirut, Beirut, Lebanon
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Rami Chamoun,
Rami Chamoun
American University of Beirut, Beirut, Lebanon
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Joe Hachem,
Joe Hachem
American University of Beirut, Beirut, Lebanon
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Ghanem Oweis,
Ghanem Oweis
American University of Beirut, Beirut, Lebanon
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Matthias Liermann
Matthias Liermann
American University of Beirut, Beirut, Lebanon
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Elias Asmar
American University of Beirut, Beirut, Lebanon
Gilles Bejjani
American University of Beirut, Beirut, Lebanon
Rami Chamoun
American University of Beirut, Beirut, Lebanon
Joe Hachem
American University of Beirut, Beirut, Lebanon
Ghanem Oweis
American University of Beirut, Beirut, Lebanon
Matthias Liermann
American University of Beirut, Beirut, Lebanon
Paper No:
FPMC2017-4330, V001T01A066; 8 pages
Published Online:
December 4, 2017
Citation
Asmar, E, Bejjani, G, Chamoun, R, Hachem, J, Oweis, G, & Liermann, M. "Experimental Study on Active Pneumatic Damping of Pulsatile Flow Delivered From Peristaltic Pump." Proceedings of the ASME/BATH 2017 Symposium on Fluid Power and Motion Control. ASME/BATH 2017 Symposium on Fluid Power and Motion Control. Sarasota, Forida, USA. October 16–19, 2017. V001T01A066. ASME. https://doi.org/10.1115/FPMC2017-4330
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