An implantable neuroprosthesis for standing and walking in paraplegia: five-year patient follow-up

Autor: Guiraud, David, Stieglitz, Thomas, Peter Koch, Klaus, Louis Divoux, Jean, Rabischong, Pierre
Přispěvatelé: Artificial movement and gait restoration (DEMAR), Laboratoire d'Informatique de Robotique et de Microélectronique de Montpellier (LIRMM), Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Inria Sophia Antipolis - Méditerranée (CRISAM), Institut National de Recherche en Informatique et en Automatique (Inria)-Institut National de Recherche en Informatique et en Automatique (Inria), Contrat européen SUAW 6ième PCRD, Inria Sophia Antipolis - Méditerranée (CRISAM), Institut National de Recherche en Informatique et en Automatique (Inria)-Institut National de Recherche en Informatique et en Automatique (Inria)-Laboratoire d'Informatique de Robotique et de Microélectronique de Montpellier (LIRMM), Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM), Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Inria Sophia Antipolis - Méditerranée (CRISAM)
Jazyk: angličtina
Rok vydání: 2006
Předmět:
Zdroj: Journal of Neural Engineering
Journal of Neural Engineering, IOP Publishing, 2006, pp.268-275
Journal of Neural Engineering, 2006, 3, pp.268-275. ⟨10.1088/1741-2560/3/4/003⟩
ISSN: 1741-2560
1741-2552
DOI: 10.1088/1741-2560/3/4/003⟩
Popis: We present the results of a five-year patient follow-up after implantation of an original neuroprosthesis. The system is able to stimulate both epimysial and neural electrodes in such a way that the complete flexor-extensor chain of the lower limb can be activated without using of the withdrawal reflex. We demonstrate that standing and assisted walking are possible, and the results have remained stable for five years. Nevertheless, some problems were noted, particularly regarding the muscle response on the epimysial channels. Analysis of the electrical behaviour and thresholds indicated that the surgical phase is crucial because of the sensitivity of the functional responses to electrode placement. Neural stimulation proved to be more efficient and more stable over time. This mode requires less energy and provides more selective stimulation. This FES system can be improved to enable balanced standing and less fatiguing gait, but this will require feedback on event detection to trigger transitions between stimulation sequences, as well as feedback to the patient about the state of his lower limbs.
Databáze: OpenAIRE
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