A New Configuration of Multipolar Cuff Electrode and Dedicated IC for Afferent Signal RecordingReportar como inadecuado




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1 SysMIC - Conception et Test de Systèmes MICroélectroniques LIRMM - Laboratoire d-Informatique de Robotique et de Microélectronique de Montpellier 2 DEMAR - Artificial movement and gait restoration LIRMM - Laboratoire d-Informatique de Robotique et de Microélectronique de Montpellier, CRISAM - Inria Sophia Antipolis - Méditerranée 3 LIRMM - Laboratoire d-Informatique de Robotique et de Microélectronique de Montpellier

Abstract : Sensory information coming from natural sensors and being propagated on afferent nerve fibers could be used as feedback for a more efficient closed-loop control of a Functional Electrical Stimulation system. In order to extract and separate these signals according to their nerve fascicule origins, we propose a new architecture of a multipolar cuff electrode and an optimized integrated acquisition circuit. Concerning the electrode, we propose a specific configuration using a large number of poles in order to both reject parasitic signals, such as electromyogram and provide a maximum of recording channels in order to help the signal localization inside the nerve. Moreover, specific low-level analog signal processing was designed to extract the expected low-amplitude signal from its noisy environment. This signal processing is implemented in an ASIC that has to be implanted close to the electrode to achieve the best signal-to-noise ratio.





Autor: Serge Bernard - Yves Bertrand - Guy Cathébras - Lionel Gouyet - David Guiraud -

Fuente: https://hal.archives-ouvertes.fr/



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