Seckler Tobias, Jagielski Kai, Stunder Dominik
The Research Center for Bioelectromagnetic Interaction (FEMU), Institute and Out-patient Clinic of Occupational Medicine, RWTH Aachen University, Pauwelsstr 30, 52074 Aachen, Germany.
Int J Environ Res Public Health. 2015 May 27;12(6):5886-904. doi: 10.3390/ijerph120605886.
Electromagnetic interference is a concern for people wearing cardiovascular implantable electronic devices (CIEDs). The aim of this study was to assess the electromagnetic compatibility between CIEDs and the magnetic field of a common wireless charging technology. To do so the voltage induced in CIEDs by Qi A13 design magnetic fields were measured and compared with the performance limits set by ISO 14117. In order to carry this out a measuring circuit was developed which can be connected with unipolar or bipolar pacemaker leads. The measuring system was positioned at the four most common implantation sites in a torso phantom filled with physiological saline solution. The phantom was exposed by using Helmholtz coils from 5 µT to 27 µT with 111 kHz sine‑bursts or by using a Qi A13 design wireless charging board (Qi‑A13‑Board) in two operating modes "power transfer" and "pinging". With the Helmholtz coils the lowest magnetic flux density at which the performance limit was exceeded is 11 µT. With the Qi‑A13‑Board in power transfer mode 10.8% and in pinging mode 45.7% (2.2% at 10 cm distance) of the performance limit were reached at maximum. In neither of the scrutinized cases, did the voltage induced by the Qi‑A13‑Board exceed the performance limits.
电磁干扰是佩戴心血管植入式电子设备（CIED）的人所关注的问题。本研究的目的是评估CIED与一种常见无线充电技术的磁场之间的电磁兼容性。为此，测量了Qi A13设计磁场在CIED中感应的电压，并与ISO 14117规定的性能极限进行比较。为了进行此项研究，开发了一种可与单极或双极起搏器导线连接的测量电路。测量系统放置在充满生理盐水溶液的躯干模型中四个最常见的植入部位。通过使用亥姆霍兹线圈以111 kHz正弦脉冲将模型暴露于5 µT至27 µT的磁场中，或者通过使用Qi A13设计的无线充电板（Qi‑A13‑板）在“功率传输”和“pinging”两种操作模式下进行暴露。使用亥姆霍兹线圈时，超过性能极限的最低磁通密度为11 µT。使用Qi‑A13‑板在功率传输模式下，最高达到性能极限的10.8%，在pinging模式下为45.7%（在10 cm距离处为2.2%）。在任何一种仔细研究的情况下，Qi‑A13‑板感应的电压均未超过性能极限。
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