IEIE Transactions on Smart Processing and Computing

대한전자공학회 (The Institute of Electronics and Information Engineers)
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Power-Efficient Wireless Neural Stimulating System Design for Implantable Medical Devices

  • Lee, Hyung-Min (School of Electrical and Computer Engineering, Georgia Institute of Technology) ;
  • Ghovanloo, Maysam (School of Electrical and Computer Engineering, Georgia Institute of Technology)
  • 투고 : 2015.05.13
  • 심사 : 2015.06.15
  • 발행 : 2015.06.30
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초록

Neural stimulating implantable medical devices (IMDs) have been widely used to treat neurological diseases or interface with sensory feedback for amputees or patients suffering from severe paralysis. More recent IMDs, such as retinal implants or brain-computer interfaces, demand higher performance to enable sophisticated therapies, while consuming power at higher orders of magnitude to handle more functions on a larger scale at higher rates, which limits the ability to supply the IMDs with primary batteries. Inductive power transmission across the skin is a viable solution to power up an IMD, while it demands high power efficiencies at every power delivery stage for safe and effective stimulation without increasing the surrounding tissue's temperature. This paper reviews various wireless neural stimulating systems and their power management techniques to maximize IMD power efficiency. We also explore both wireless electrical and optical stimulation mechanisms and their power requirements in implantable neural interface applications.

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