多缝隙电磁加热针的研究
发布时间：2018-08-18 12:47
【摘要】：对于肝脏肿瘤性疾病的治疗,一直都是全世界医学工作者所关心的问题。微波医疗这一概念的提出,使得通过微波进行肝脏肿瘤治疗的技术成为当今最活跃的研究热点之一。微波医疗提出了一种新型的治疗肿瘤的方式,启发人们将微波学和生物学广泛结合。临床实验结果表明,将微波加热技术用于肿瘤的治疗的疗效相比于其他放射、化疗等方式更为有效。而且,微波加热技术的设备简单、操作方便、费用相对低廉,更主要的是,微波加热治疗肿瘤并发症少,副作用小,显著地提高了病患的生存质量。微波加热针是微波加热在肿瘤治疗中最为关键的器件,也是目前微波加热在肿瘤治疗当中的研究重点之一。本文在调研国内外相关文献的基础上,针对多缝隙电磁加热针进行研究和设计,争取在微波加热针的加热长度和加热形状上有所创新,主要研究工作和创新内容如下:一、首先对传统的微波加热针进行理论分析研究,并通过HFSS和COMSOL等相关仿真软件进行建模仿真设计出一种工作于2.45 GHz的单极子微波加热针,并设计加工完成实验。二、为了保护实验人员在进行体外大功率活体猪肝实验时不受电磁辐射的伤害,本文利用仿真软件HFSS设计分析并加工一种透明可视化的吸波暗室,用于本论文中设计出的所有的微波加热针的体外活体猪肝实验。在有效保障实验人员不被大功率微波辐射的同时,还能让实验人员更好的观察和记录消融加热效果实时变化效果。三、在单极子电磁加热针的基础上,利用HFSS和ADS联合仿真,提取了缝隙的等效电路模型,运用MATLAB软件拟合出了缝隙等效电路结构的各个参数与缝隙宽度的数学关系式,并利用这种方法初步设计了多种缝隙加热针,并在HFSS中进行了验证,简化并方便了后续的仿真设计。提出了添加金属套筒结构这一方式,改变了加热形状,实现了“一针多用”的效果。四、最后在多缝隙电磁加热针的基础上,设计加工并实验多根电磁加热针同时工作的情形,扩大了电磁加热针的加热范围,并联系华西医院的科研人员,进行了动物活体实验,并记录了实验数据。
[Abstract]:The treatment of liver neoplastic diseases has always been concerned by medical workers all over the world. With the development of the concept of microwave therapy, microwave therapy for liver tumors has become one of the most active research topics. Microwave therapy has proposed a new way to treat cancer and inspired the wide combination of microwave and biology. The clinical results show that microwave heating is more effective than other methods such as radiotherapy and chemotherapy. Moreover, microwave heating technology has the advantages of simple equipment, convenient operation and relatively low cost. More importantly, microwave heating therapy has fewer complications and less side effects, which significantly improves the quality of life of patients. Microwave heating needle is the most important device of microwave heating in tumor treatment, and it is also one of the key points of microwave heating in tumor therapy. Based on the domestic and foreign literature, this paper studies and designs the multi-slot electromagnetic heating needle, and tries to innovate the heating length and shape of the microwave heating needle. The main research and innovation contents are as follows: 1. Firstly, the traditional microwave heating needle is studied theoretically, and a monopole microwave heating needle working in 2.45 GHz is designed by HFSS and COMSOL simulation software, and the experiment is completed. Secondly, in order to protect the experimenter from electromagnetic radiation in the experiment of high power pig liver in vitro, a transparent visual absorbing chamber was designed and processed by using the simulation software HFSS. In this paper, designed for all microwave heating needle in vitro porcine liver experiment. It can not only protect the experimenter from high power microwave radiation, but also enable the experimenter to observe and record the real time effect of ablation heating. Thirdly, on the basis of monopole electromagnetic heating needle, the equivalent circuit model of slot is extracted by using HFSS and ADS simulation, and the mathematical relationship between the parameters of gap equivalent circuit structure and slot width is fitted by MATLAB software. By using this method, a variety of slot heating needles are preliminarily designed and verified in HFSS, which simplifies and facilitates the subsequent simulation design. The method of adding metal sleeve structure is put forward, and the heating shape is changed, and the effect of "one pin multi-purpose" is realized. Finally, on the basis of the multi-slot electromagnetic heating needle, we designed and processed and experimented with multiple electromagnetic heating needles working at the same time, expanded the heating range of the electromagnetic heating needles, and contacted the researchers in Huaxi Hospital to conduct animal experiments in vivo. The experimental data were recorded.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：R735.7;TN015
本文编号：2189516
[Abstract]:The treatment of liver neoplastic diseases has always been concerned by medical workers all over the world. With the development of the concept of microwave therapy, microwave therapy for liver tumors has become one of the most active research topics. Microwave therapy has proposed a new way to treat cancer and inspired the wide combination of microwave and biology. The clinical results show that microwave heating is more effective than other methods such as radiotherapy and chemotherapy. Moreover, microwave heating technology has the advantages of simple equipment, convenient operation and relatively low cost. More importantly, microwave heating therapy has fewer complications and less side effects, which significantly improves the quality of life of patients. Microwave heating needle is the most important device of microwave heating in tumor treatment, and it is also one of the key points of microwave heating in tumor therapy. Based on the domestic and foreign literature, this paper studies and designs the multi-slot electromagnetic heating needle, and tries to innovate the heating length and shape of the microwave heating needle. The main research and innovation contents are as follows: 1. Firstly, the traditional microwave heating needle is studied theoretically, and a monopole microwave heating needle working in 2.45 GHz is designed by HFSS and COMSOL simulation software, and the experiment is completed. Secondly, in order to protect the experimenter from electromagnetic radiation in the experiment of high power pig liver in vitro, a transparent visual absorbing chamber was designed and processed by using the simulation software HFSS. In this paper, designed for all microwave heating needle in vitro porcine liver experiment. It can not only protect the experimenter from high power microwave radiation, but also enable the experimenter to observe and record the real time effect of ablation heating. Thirdly, on the basis of monopole electromagnetic heating needle, the equivalent circuit model of slot is extracted by using HFSS and ADS simulation, and the mathematical relationship between the parameters of gap equivalent circuit structure and slot width is fitted by MATLAB software. By using this method, a variety of slot heating needles are preliminarily designed and verified in HFSS, which simplifies and facilitates the subsequent simulation design. The method of adding metal sleeve structure is put forward, and the heating shape is changed, and the effect of "one pin multi-purpose" is realized. Finally, on the basis of the multi-slot electromagnetic heating needle, we designed and processed and experimented with multiple electromagnetic heating needles working at the same time, expanded the heating range of the electromagnetic heating needles, and contacted the researchers in Huaxi Hospital to conduct animal experiments in vivo. The experimental data were recorded.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：R735.7;TN015
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，本文编号：2189516
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