Patent ID: 8170683

Claim:
A nerve stimulation device comprising: a first waveform generator configured to generate a first waveform having a first frequency capable of stimulating nerves within a dermatome; a second waveform generator configured to generate a first carrier waveform having a second frequency that is greater than said first frequency and that is capable of passing through tissue of a mammal; a third waveform generator configured to generate a second carrier waveform having a third frequency that is greater than said first frequency and that is different than said second frequency and being capable of passing through the tissue of the mammal; a modulator electrically coupled to said first, second and third waveform generators and configured to modulate said first waveform, said first carrier waveform, and said second carrier waveform to generate a modulated signal package capable of stimulating the nerves at different depths within the dermatome, wherein the modulated signal package comprises a first part combining said first waveform and said first carrier waveform for stimulating a first branch of the nerves at a first depth within the dermatome, and a second part combining said first waveform and said second carrier waveform for stimulating a second branch of the nerves at a second depth within the dermatome; and an electrode electrically coupled to said modulator for applying said modulated waveform to the dermatome.