激光等离子体爆轰波血栓推进机理的数值模拟研究  

Numerical Simulation of Thrombus Propulsion Mechanism Induced by Laser Plasma Detonation Wave

作　　者：葛杨[1] 李寒阳 王鸿涛 陈营 杨旭龙 周高仟 Ge Yang;Li Hanyang;Wang Hongtao;Chen Ying;Yang Xulong;Zhou Gaoqian(College of Mechanical and Electrical Engineering,Harbin Engineering University,Harbin 150001,Heilongjiang,China;College of Physics and Optoelectronic Engineering,Harbin Engineering University,Harbin 150001,Heilongjiang,China;Avic Harbin Aircraft Industry Group Co.,Ltd.,Harbin 150066,Heilongjiang,China)

机构地区：[1]哈尔滨工程大学机电工程学院,黑龙江哈尔滨150001 [2]哈尔滨工程大学物理与光电工程学院,黑龙江哈尔滨150001 [3]航空工业哈尔滨飞机工业集团有限责任公司,黑龙江哈尔滨150066

出　　处：《中国激光》2024年第3期148-159,共12页Chinese Journal of Lasers

基　　金：国家自然科学基金(52271344);黑龙江省自然科学基金(LH2021E032)。

摘　　要：水下激光等离子体爆轰波能够作用于微球表面产生推力进而推动微球运动。本课题组依据水下激光等离子体爆轰波的作用机理,提出了激光等离子体爆轰波定点清除血栓的方法。以血液为介质建立血管血栓模型,采用光纤激光器作为动力,进行激光等离子体爆轰波血栓推进的机理研究及数值模拟。结果显示:激光等离子体爆轰波对血栓表面有一定大小的强推力作用,能量为20μJ的激光对直径为2 mm的下肢静脉血栓表面的峰值推力可以达到1.0 N,而且峰值推力的大小取决于激光能量以及血栓的尺寸和形状。水下光纤激光等离子体推进微球和团簇实验进一步证明了激光等离子体爆轰波定点清除血栓和打散团簇的可行性,为聚集型血栓团簇的定点清除提供了一种可行方法。Objective Optical fiber is an efficient propagation carrier of laser energy.A short-pulse laser can be focused on the end of a fiber to realize the directional propagation of energy along the carrier path.Therefore,the efficient and high-energy transmission of laser energy can be realized by inducing a plasma detonation wave with an underwater fiber laser.The integration of underwater fiber laser propulsion technology with various scientific and technological advancements holds significant promise in fields such as green ship manufacturing,submarine stealth propulsion,detonation engine performance,and supercavitation weapon systems.In the medical field,vascular embolism and thrombotic disease caused by endovascular thrombus flaking are still intractable diseases.Traditional thrombectomy and interventional hemolysis can cause harmful complications.For example,a thrombectomy can easily cause largescale bleeding and the embolization of blood vessels.In view of the prominent problems with traditional thrombus removal,the technique of underwater fiber laser propulsion has been applied to the targeted removal of blood vessel thrombi.Based on fiber conduction,a short-pulse laser-induced plasma detonation wave propulsion scheme is proposed as part of the technical research on the noninvasive comprehensive treatment of thrombi.To explore the propagation characteristics of laser-induced plasma detonation waves,the feasibility of the fixed-point and directional noninvasive removal of thrombi using fiber laser-induced plasma detonation waves is verified by combining experiments and simulations.Methods This study analyzed the mechanism of underwater fiber laser-induced plasma shock wave propulsion.It modeled a thrombus in a human blood vessel,creating two environments for underwater fiber-optic laser propulsion.The study employed numerical simulations to observe the propagation process of plasma shockwaves generated by laser energy.First,the model,propagation mechanism,and absorption mechanism of laser plasma detonation waves

关 键 词：激光器 光纤 等离子体爆轰波 激光推进 血管血栓 定点清除 

分 类 号：TN249[电子电信—物理电子学]