Aspiration thrombectomy is a treatment option for ischemic stroke due to occlusions in large vessels. During the therapy a device is inserted into the vessel and suction is applied. A new one-dimensional model is introduced that is capable of simulating this procedure while accounting for the fluid-structure interactions in blood flow. To solve the coupling problem at the tip of the device a problem-suited Riemann solver is constructed based on relaxation of the hyperbolic model. Numerical experiments investigating the role of the catheter size and the suction forces are presented.

翻译：抽吸取栓术是治疗大血管闭塞所致缺血性卒中的一种选择。在治疗过程中，将器械插入血管并施加抽吸力。本文提出了一种新的一维模型，该模型能够模拟这一过程，同时考虑血流中的流固耦合作用。为解决器械尖端处的耦合问题，基于双曲模型的松弛方法构建了适用于该问题的黎曼求解器。文中还给出了探讨导管尺寸与抽吸力作用的数值实验。