WIMAGINE: Wireless 64-Channel ECoG Recording Implant for Long Term Clinical Applications

Author

Mestais, Corinne S. ; Charvet, Guillaume ; Sauter-Starace, Fabien ; Foerster, Michael ; Ratel, David ; Benabid, Alim Louis

Author_Institution

LETI, CEA, Grenoble, France

Volume

23

Issue

1

fYear

2015

fDate

Jan. 2015

Firstpage

10

Lastpage

21

Abstract

A wireless 64-channel ElectroCorticoGram (ECoG) recording implant named WIMAGINE has been designed for various clinical applications. The device is aimed at interfacing a cortical electrode array to an external computer for neural recording and control applications. This active implantable medical device is able to record neural activity on 64 electrodes with selectable gain and sampling frequency, with less than 1 μV RMS input referred noise in the [0.5 Hz - 300 Hz] band. It is powered remotely through an inductive link at 13.56 MHz which provides up to 100 mW. The digitized data is transmitted wirelessly to a custom designed base station connected to a PC. The hermetic housing and the antennae have been designed and optimized to ease the surgery. The design of this implant takes into account all the requirements of a clinical trial, in particular safety, reliability, and compliance with the regulations applicable to class III AIMD. The main features of this WIMAGINE implantable device and its architecture are presented, as well as its functional performances and long-term biocompatibility results.

Keywords

biomedical electrodes; biomedical electronics; brain-computer interfaces; medical control systems; neural nets; phantoms; prosthetics; surgery; wireless channels; ECoG recording implant; WIMAGINE architecture; WIMAGINE features; WIMAGINE functional performances; WIMAGINE long-term biocompatibility; Wireless Implantable Multichannel Acquisition System for Generic Interface with Neurons; class III AIMD; control applications; cortical electrode array; digitized data; external computer; hermetic housing; implant design; inductive link; long term clinical application; medical device; neural activity; neural recording; surgery; wireless 64-channel ElectroCorticoGram; Arrays; Base stations; Electrodes; Implants; Throughput; Titanium; Wireless communication; Active implantable medical device (AIMD); ElectroCorticoGrams (ECoG); brain–computer interface (BCI); neural interface; neural prosthesis;

fLanguage

English

Journal_Title

Neural Systems and Rehabilitation Engineering, IEEE Transactions on

Publisher

ieee

ISSN

1534-4320

Type

jour

DOI

10.1109/TNSRE.2014.2333541

Filename

6846362