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Numerical Simulation of Thrombus Aspiration Catheter: Preliminary Results

机译:血栓抽吸导管的数值模拟:初步结果

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Thrombus aspiration is one of the available therapies for the treatment of thrombosis diseases. It is an effective option especially in the case of early stage dot forma tion. Nowadays there is a major research effort to improve catheter design in term of ease of use, less drawback and higher efficiency. The main aim of this study is to consider the performance of a standard catheter and predict the behavior of clot during the aspiration phase using computational fluid dynamics (CFD) techniques. Three cases are modeled and compared one another to assess catheter performance and efficiency according to different rheological models for the dot In the first case the dot is considered to be Newtonian with early stage coagulation and no surface tension, in the second case the dot exhibits higher viscosity due to the longer time passed after coagulation, but it has not surface tension, in the third case the dot is assumed to be Newtonian which is formed in early stages of coagulation but has surface tension. In all cases dot is assumed to behave like a viscous fluid.
机译:血栓抽吸术是治疗血栓形成疾病的可用疗法之一。这是一种有效的选择,尤其是在早期点形成的情况下。如今,在易于使用,减少缺陷和提高效率方面,已有大量研究工作来改善导管设计。这项研究的主要目的是考虑标准导管的性能,并使用计算流体力学(CFD)技术预测抽吸阶段的血凝块行为。对三种情况进行建模,并根据不同的流变模型对彼此进行比较,以评估该点的导管性能和效率。在第一种情况下,该点被认为是牛顿性的,具有早期凝结且没有表面张力,在第二种情况下,该点表现出较高的由于在凝固后经过了较长的时间,所以粘度变大,但是没有表面张力,在第三种情况下,该点被认为是牛顿体系,它是在凝固的早期阶段形成的,但是具有表面张力。在所有情况下,都假定点的行为像粘性流体。

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