Patient-driven loop control for ambulation function restoration in a non-invasive functional electrical stimulation system

Disability and Rehabilitation
W L ChenT S Kuo

Abstract

In this study, a patient-driven loop control in a non-invasive functional electrical stimulation (FES) system was designed to restore ambulation function of patients with stroke with their residual capabilities. With this patient-driven loop control, patients use the electromyographic (EMG) signals from their voluntary controlled muscles in affected extremity to adjust stimulus parameters of the system. A special designed FES system generated electrical stimuli to excite the paralysed muscles through surface electrodes on the basis of the control command from the residual myoelectric signals. The EMG signals were also served as the trigger and the adjustment of stimulus parameters and thereby adding versatility of the FES system. One patient with hemiplegia was recruited to conduct clinical evaluation and treated by using the new closed-loop FES system. The experimental results showed that hemiplegic could successfully control the system to restore their lost ambulation functions with the strategy of patient-driven loop control. It is revealed that the mean velocity, cadence, stride length, active ankle motion range and functional ambulation category have improved significantly from 0.22 + or - 0.17 m/s, 37.3 + or - 15.5 steps/...Continue Reading

References

Dec 1, 1996·IEEE Transactions on Rehabilitation Engineering : a Publication of the IEEE Engineering in Medicine and Biology Society·T R ScottK L Kilgore
Mar 1, 1997·IEEE Transactions on Rehabilitation Engineering : a Publication of the IEEE Engineering in Medicine and Biology Society·G C ChangT S Kuo
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Apr 10, 2002·Artificial Organs·Mirjana B PopovicLaszlo Schwirtlich
Jun 5, 2004·Archives of Physical Medicine and Rehabilitation·Valeriya Gritsenko, Arthur Prochazka
Jul 24, 2004·Medical Engineering & Physics·Ying-Han ChiouTe-Son Kuo

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Citations

Mar 21, 2012·Journal of Medical Engineering & Technology·S TanabeY Kanada

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