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Artificial grasping system for the paralyzed hand
M C Ferrari de Castro1, A Cliquet
1Department of Orthopaedics and Traumatology, Faculty of Medical Sciences, State University of Campinas, Campinas, and Department of Electrical Engineering, Engineering School, University of São Paulo, São Carlos, São Paulo, Brazil.
Abstract:
Neuromuscular electrical stimulation has been used in upper limb rehabilitation towards restoring motor hand function. In this work, an 8 channel microcomputer controlled stimulator with monophasic square voltage output was used. Muscle activation sequences were defined to perform palmar and lateral prehension and power grip (index finger extension type). The sequences used allowed subjects to demonstrate their ability to hold and release objects that are encountered in daily living, permitting activities such as drinking, eating, writing, and typing.