Simulation of leakage current measurement on medical devices using helmholtz coil configuration with different current flow

International Conference on Physical Instrumentation and Advanced Materials

物理学;材料科学

Sutanto, E.^1 ; Chandra, F.^1 ; Dinata, R.^2

Department of Physics, Faculty of Science and Technology, Airlangga University, Surabaya

60115, Indonesia^1

Badan Pengkajian Fasilitas Kesehatan, Jalan Karang Menjangan No.22, Surabaya

60286, Indonesia^2

关键词: Current flows;    Earth leakage circuit breakers;    Helmholtz coil;    IEC standards;    Java simulations;    Medical Devices;    Residual current devices;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/853/1/012004/pdf
DOI  :  10.1088/1742-6596/853/1/012004

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Leakage current measurement which can follow IEC standard for medical device is one of many challenges to be answered. The IEC 60601-1 has defined that the limit for a leakage current for Medical Device can be as low as 10 μ A and as high as 500 μ A, depending on which type of contact (applied part) connected to the patient. Most people are using ELCB (Earth-leakage circuit breaker) for safety purpose as this is the most common and available safety device in market. One type of ELCB devices is RCD (Residual Current Device) and this RCD type can measure the leakage current directly. This work will show the possibility on how Helmholtz Coil Configuration can be made to be like the RCD. The possibility is explored by comparing the magnetic field formula from each device, then it proceeds with a simulation using software EJS (Easy Java Simulation). The simulation will make sure the concept of magnetic field current cancellation follows the RCD concept. Finally, the possibility of increasing the measurement's sensitivity is also analyzed. The sensitivity is needed to see the possibility on reaching the minimum leakage current limit defined by IEC, 0.01mA.