摘要
研究生物医学体内植入器件能量供应优化方法,为了优化体导电系统效能,利用皮肤电特性高效地向体内植入器件提高能量。提出体导电能量传递系统体外采用圆形柱体阵列电极,将皮肤电极单元等效为多导体系统,建立了流经各电极的电流与电压的导纳矩阵关系,并用欧姆定律与电磁场原理相结合的方法计算出皮肤电极单元的集总参数。通过比较集总参数,得到圆形柱体阵列电极较圆形柱体电极具有更优的阻抗分配,能够提高体导电电流传递效率。利用有限元软件仿真了圆形柱体阵列电极皮肤单元的电流传递,证明效率能达50%以上。
In order to optimize Volume Conduction system, we used the electrical characteristics of skin to transfer energy to the implanted device efficiently, treated the skin-electrodes of volume conductive as multi-conductor system, and established the admittance matrix to show the relationship between voltage and current. Ohm＇s law and electromagnetic field theory were used to calculate the lumped parameter of skin-electrodes unit. Through comparing circular cylinder electrode with circular cylinder arranging-electrodes＇ lumped parameter, it can be concluded that cir- cular cylinder arranging-electrodes has better impedance distribution, higher energy transfer efficiency. Finally, fi- nite element software FEMlab3.3 was used to simulate the efficiency of circular cylinder array electrode-skin unit, and it can reach above 50%.
出处
《计算机仿真》
CSCD
北大核心
2012年第5期386-390,共5页
Computer Simulation
基金
重庆大学输配电装备及系统安全与新技术国家重点实验室2009年度研究项目(2007DA10512709303)
国家自然科学基金资助项目(50877082)
关键词
植入医学器件
电磁场
能量传递
集总参数
Implantable medical device
Electromagnetic field
Energy delivery
Lumped parameter
