This study was designed to investigate the effects of hemodynamic environment and design factors on the hydraulic performance and hemocompatibility of interventional blood pumps using computational fluid dynamics methods combined with specialized mathematical models. These analyses assessed how different hemodynamic environments (such as support mode and artery size) and blood pump configurations (including entrance/exit blade angles, rotor diameter, blade number, and diffuser presence) affect hydraulic performance indicators (rotational speed, flow rate, pressure head, and efficiency) and hemocompatibility indicators (bleeding, hemolysis, and thrombosis). Our findings indicate that higher perfused flow rates necessitate greater rotational speeds, which, in turn, reduce both efficiency and hemocompatibility. As the artery size increases, the hydraulic performance of the pump improves but at the cost of worsening hemocompatibility. Among the design parameters, optimal configurations exist that balance both hydraulic performance and hemocompatibility. Notably, a configuration without a diffuser demonstrated better hydraulic performance and hemocompatibility compared to one with a diffuser. Further analysis revealed that flow losses primarily contribute to the degradation of hydraulic performance and deterioration of hemocompatibility. Shear stress was identified as the major cause of blood damage in interventional blood pumps, with residence time having a limited impact. This study comprehensively explored the effects of operating environment and design parameters on catheter pump performance using a multi-faceted blood damage model, providing insights into related complications from a biomechanical perspective. These findings offer valuable guidance for engineering design and clinical treatment.
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November 2024
Research Article|
November 04 2024
Evaluation and optimization of interventional blood pump based on hydraulic performances and hemocompatibility performances
Yuan Li (李远)
;
Yuan Li (李远)
(Conceptualization, Data curation, Formal analysis, Funding acquisition, Investigation, Methodology, Resources, Software, Validation, Visualization, Writing – original draft, Writing – review & editing)
Key Laboratory of Biomechanics and Mechanobiology (Beihang University), Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University
, Beijing 100083, China
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Mengqi Zhang (张梦琪);
Mengqi Zhang (张梦琪)
(Investigation, Writing – review & editing)
Key Laboratory of Biomechanics and Mechanobiology (Beihang University), Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University
, Beijing 100083, China
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Anqiang Sun (孙安强);
Anqiang Sun (孙安强)
(Funding acquisition, Project administration, Supervision, Writing – review & editing)
Key Laboratory of Biomechanics and Mechanobiology (Beihang University), Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University
, Beijing 100083, China
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Xiaofei Wang (王晓飞);
Xiaofei Wang (王晓飞)
(Funding acquisition, Validation, Writing – review & editing)
Key Laboratory of Biomechanics and Mechanobiology (Beihang University), Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University
, Beijing 100083, China
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Yubo Fan (樊瑜波)
;
Yubo Fan (樊瑜波)
(Funding acquisition, Project administration, Writing – review & editing)
Key Laboratory of Biomechanics and Mechanobiology (Beihang University), Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University
, Beijing 100083, China
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Zengsheng Chen (陈增胜)
Zengsheng Chen (陈增胜)
a)
(Formal analysis, Funding acquisition, Supervision, Validation, Writing – original draft, Writing – review & editing)
Key Laboratory of Biomechanics and Mechanobiology (Beihang University), Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University
, Beijing 100083, China
a)Author to whom correspondence should be addressed: [email protected]
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Mengqi Zhang (张梦琪)
Anqiang Sun (孙安强)
Xiaofei Wang (王晓飞)
Key Laboratory of Biomechanics and Mechanobiology (Beihang University), Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University
, Beijing 100083, China
a)Author to whom correspondence should be addressed: [email protected]
Physics of Fluids 36, 111903 (2024)
Article history
Received:
September 15 2024
Accepted:
October 13 2024
Citation
Yuan Li, Mengqi Zhang, Anqiang Sun, Xiaofei Wang, Yubo Fan, Zengsheng Chen; Evaluation and optimization of interventional blood pump based on hydraulic performances and hemocompatibility performances. Physics of Fluids 1 November 2024; 36 (11): 111903. https://doi.org/10.1063/5.0238874
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