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• W2190231773 endingPage "982" @default.
• W2190231773 startingPage "970" @default.
• W2190231773 abstract "We are developing a collapsible, percutaneously inserted, axial flow blood pump to support the cavopulmonary circulation in infants with a failing single ventricle physiology. An initial design of the impeller for this axial flow blood pump was performed using computational fluid dynamics analysis, including pressure-flow characteristics, scalar stress estimations, blood damage indices, and fluid force predictions. A plastic prototype was constructed for hydraulic performance testing, and these experimental results were compared with the numerical predictions. The numerical predictions and experimental findings of the pump performance demonstrated a pressure generation of 2–16 mm Hg for 50–750 ml/min over 5,500–7,500 RPM with deviation found at lower rotational speeds. The axial fluid forces remained below 0.1 N, and the radial fluid forces were determined to be virtually zero due to the centered impeller case. The scalar stress levels remained below 250 Pa for all operating conditions. Blood damage analysis yielded a mean residence time of the released particles, which was found to be less than 0.4 seconds for both flow rates that were examined, and a maximum residence time was determined to be less than 0.8 seconds. We are in the process of designing a cage with hydrodynamically shaped filament blades to act as a diffuser and optimizing the impeller blade shape to reduce the flow vorticity at the pump outlet. This blood pump will improve the clinical treatment of patients with failing Fontan physiology and provide a unique catheter-based therapeutic approach as a bridge to recovery or transplantation." @default.
• W2190231773 created "2016-06-24" @default.
• W2190231773 creator A5004314458 @default.
• W2190231773 creator A5035870870 @default.
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• W2190231773 date "2008-11-01" @default.
• W2190231773 modified "2023-09-26" @default.
• W2190231773 title "Mechanical axial flow blood pump to support cavopulmonary circulation" @default.
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• W2190231773 doi "https://doi.org/10.1177/039139880803101107" @default.
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