多电极射频美容仪的温度场仿真实验研究

Simulation and Experiment on Temperature Field of Multi-electrode RF Cosmetic Devices

射频美容仪是国内家用美容仪市场中很受欢迎的保健产品。然而,市面上的射频美容仪产品质量参差不齐,相关参数也缺乏统一的标准规范。该研究基于有限元仿真方法和COMSOL仿真软件,构建了具有隔膜的三维皮肤模型,仿真分析、研究了不同射频美容仪的射频电压有效值、射频频率、电极高度、电极直径、电极间距、电极数量及排布等参数条件对皮肤及皮下组织温度场分布的影响,并进行了对比分析。仿真结果表明:提高电压有效值或射频频率能提高模型温度场的最大值;提高电极高度相比紧贴皮肤会降低温度场最大值并使射频美容仪下的温度分布更加均匀;增加电极直径或缩小电极间距能提高电极间的温度;不同的正负极数量会使热量集中在数量较少的电极下方。最后,该研究还完成了温度场分布随时间的实验测量及与仿真结果的比较分析。该研究较为系统、全面地仿真探讨了射频美容仪产品的各项参数条件变化对皮肤温度分布的影响规律,为溶脂技术的安全与疗效提供参考,也为射频美容仪的临床应用及产业化提供参考。

RF cosmetic devices is a popular healthcare device in the domestic home cosmetic device.However,the quality of RF cosmetic devices varies,and there is a lack of unified standard specifications for design parameters.Based on finite element analyses and COMSOL,the research constructs a three-dimensional skin model with a diaphragm,simulates the temperature distribution with changing the voltage,RF frequency of the device,the height,diameter,spacing,number and arrangement of the electrodes respectively and makes a comparative analysis.The result shows that increasing the voltage RMS or frequency can increase the maximum of temperature field;placing electrons at a distance reduces the maximum of temperature field and makes it more uniform compared to close to skin;increasing the diameter or reducing the distance between the electrodes increases the temperature;different positive and negative electrodes concentrates the heat under the fewer electrodes.Finally,this study also completed experimental measurements of temperature field distribution over time and comparative analysis with simulation.This research systematically and comprehensively discusses the influence of various parameters of RF cosmetic devices on skin temperature distribution,which provides reference for the safety and efficacy of lipolysis technology,and for the clinical application and industrialization of RF cosmetic devices.