A method for reducing body exposure to electromagnetic field of pillow type wireless charger in fully implantable middle ear hearing device

IEICE Electronics Express

J. H. Lee²  E. S. Jung¹  M. W. Kim¹  J. H. Cho¹  K. W. Seong¹  J. W. Lee¹  H. G. Lim¹ 

[1] Graduate School of Electrical Engineering and Computer Science, Kyungpook National University;Department of Biomedical Engineering, Kyungpook National University Hospital

关键词: fully implantable middle ear hearing device;    wireless charger;    electromagnetic coupling;    electromagnetic field exposure;    hall effect sensor;   

DOI  :  10.1587/elex.6.1318

学科分类：电子、光学、磁材料

来源: Denshi Jouhou Tsuushin Gakkai

【 摘 要 】

References(10)Implantable middle ear hearing devices (IMEHDs) have been developed at several countries. Some devices can be selected rechargeable battery for long-term implant. In South Korea, a kind of IMEHD with rechargeable battery and a pillow type wireless charger have been developed. The charger includes several coils surrounding user's head in sleep. However, this device should excessively consume power due to driving all primary coils. Especially, needless exposure to magnetic field generated from uncoupled primary coils may induce bio-hazards. Therefore, a method reducing the body exposure to electromagnetic field was proposed as decreasing the emitted total magnetic flux during charge process.

【 授权许可】

Unknown