Functional electrical stimulation (FES) is a therapy used to rehabilitate patients with lost movement functions, and to apply stimulations. We adapted a method of implanted direct feeding method to apply stimulation as part of this therapy. Stimulus energy and signals for controlling devices are applied to devices by utilizing a mounted system using magnetic coupling. Power feeding is presently carried out with a serial resonance circuit in the method of direct feeding. Two feeding coils are used for the upper and lower arms individually in order not to disturb the movement in the joint of the elbow. Declination of resonance from variations in coupling interference from the movement of feeding coils is a problem. To solve it, we used a method that reduced variations in coupling interference by using a short coil between feeding coils. We report here the result of experiments conducted on this method.
