PMID: 6983299Dec 1, 1982Paper

Development of a universal control unit for functional electrical stimulation (FES)

American Journal of Physical Medicine
B R Brandell

Abstract

In collaboration with the College of Engineering the author has developed a laboratory, or clinic, based, battery operated "universal" control system, designed to improve disabled gait in upper motor neuron disabilities, especially stroke, hemiplegia, and cerebral palsy, by applying several channels of FES (Functional Electrical Stimulation) to the lower limb muscles while the patient is walking. The timing of the FES pulses, which can be applied to as many as six of the patient's muscles, is determined by potentiometer controlled one-shot timers, which are triggered by any of three switches in the sole of either shoe. Combinations of inverters, flip flops, AND gates and OR gates in the externally connected logic circuits determine the sequence of delays and pulses applied to the patient's muscles. This paper describes and diagrams some of the logic circuits and as an example of the possible application of the concept of a "universal" control unit reports the modifications of gait induced in a hemiplegic, four year post-stroke, patient. The characteristics of this patient's gait with FES in comparison to its characteristics without FES are demonstrated with motion picture frames, EMG recordings and graphic tracings of her right...Continue Reading

Citations

Dec 21, 2000·Medical Engineering & Physics·R Williamson, B J Andrews
Nov 25, 2003·Medical Engineering & Physics·Avril Mansfield, Gerard M Lyons
Aug 18, 2010·Journal of Neuroscience Methods·Hojun Yeom, Young-Hui Chang
Mar 4, 2003·IEEE Transactions on Neural Systems and Rehabilitation Engineering : a Publication of the IEEE Engineering in Medicine and Biology Society·Gerard M LyonsDavid J Wilcox
Dec 4, 2015·Journal of Neurophysiology·Kenji KatoYukio Nishimura

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