NDLI: A Safe Transmission Strategy for Power and Data Recovery in Biomedical Implanted Devices

Content Provider	IEEE Xplore Digital Library
Author	Xiao Liu Demosthenous, A. Donaldson, N.
Copyright Year	2007
Description	Author affiliation: Dept. of Electron. & Electr. Eng., Univ. Coll. London (Xiao Liu)
Abstract	The prime concern in the design of biomedical implants is safety. This paper addresses several safety features and proposes a new scheme to transmit power and data from the central implant to the stimulator "pods" while maintaining failsafe operation. The proposed scheme demultiplexes the stimulation command close to the electrodes and uses three wires in total to provide power and data to all stimulator "pods" from the central implant. Thus, it greatly reduces the number of wires routed to the stimulation sites and is able to stimulate more stimulator "peas". The circuit used to recover the power is shown, utilizing the three wires as the only inputs. The power recovery circuit features a varactor as the storage capacitor which gives a faster pumping speed than a linear capacitor. The idea is verified with circuit simulations in a 0.6mum CMOS technology. The proposed scheme ensures that in the event of cable failure, the current will be charge-balanced, thereby avoiding the generation of harmful electrochemical products.
Starting Page	2367
Ending Page	2370
File Size	304446
Page Count	4
File Format	PDF
ISBN	1424409209
DOI	10.1109/ISCAS.2007.377935
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-05-27
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Wires Electrodes Safety Capacitors Anodes Circuits Auditory implants Batteries Condition monitoring Muscles
Content Type	Text
Resource Type	Article

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