ArticleScientific reports2022
Experimental study of an asymmetric valveless pump to elucidate insights into strategies for pediatric extravascular flow augmentation.
Article in Scientific reports, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- A simple technique for characterizing flexible materials using pressurised tubes.Scientific reports · 2026Article
- A Novel Valveless Pulsatile Flow Pump for Extracorporeal Blood Circulation.Annals of biomedical engineering · 2025Article
- A cavalpulmonary assist device utilising impedance pumping enhanced by peristaltic effect.The International journal of artificial organs · 2024Article
- On the Longitudinal Wave Pumping in Fluid-filled Compliant Tubes.Physics of fluids (Woodbury, N.Y. : 1994) · 2023Article
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Authors and funding
9 authors.
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Abstract
Asymmetric pumping is a sub-category of valveless pumping in which a flexible tube is rhythmically compressed in the transverse symmetry plane. Due to the resulting asymmetry between the suction and discharge pipes, a net pumping head is achieved. Asymmetric pumping is regarded as one of the main mechanisms responsible for the Liebau effect in addition to impedance pumping. However, there remains a paucity of research surrounding the governing parameters of asymmetric pumping. Here, we conducted an experimental study of the performance of an asymmetric pump, with an aim to assess its potential for extravascular flow augmentation. A custom flexible latex tube and experimental platform were developed for this purpose. We tested various tube thicknesses and pinching frequencies. Our results demonstrate that the performance is within the range of physiological requirements for pediatric circulatory devices (~ 1 L/min and < 30 mmHg). We conclude that due to the absence of reverse flow and its mechanical simplicity, pure asymmetric pumping is promising for selected cardiovascular applications with less complexity than other valveless techniques.
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