Development of an Implantable Telestimulator
In 1962 we studied conduction block in the sciatic nerve of the cat by producing a polarizing focus. This led to the development of a full-wave rectifier receiver tuned to 14.5 KHZ. This device was implanted in a series of patients with trigeminal neuralgia, hemifacial spasm, phantom limb pain and lower extremity dystonia. Bipolar platinum electrodes were attached to the trigeminal, facial, brachial plexus and sciatic nerves respectively. The receiver was energized by transmission from a tuned oscillator operating at 14.5 KHZ. Amplitude was controlled by varying the coupling between the primary and secondary coils.