Spinal cord stimulation with interferential current

An electrical stimulator for the treatment of intractable pain syndromes, comprising:

• a pulse generator that generates digital signal pulses;
• a digital signal processor connected to said pulse generator that generates a sine-wave-like output waveform that is further processed into first and second circuits;
• and
• two pairs of implantable electrodes connected to said digital signal processor and positioned on a subject's spinal cord at predetermined locations to produce an interferential current output waveform from said first and second circuits.

An electrical stimulator for the treatment of intractable pain syndromes, comprising:

• a pulse generator that generates digital signal pulses;
• a field-programmable gate array connected to said pulse generator that generates a sine-wave-like output waveform that is further processed into first and second circuits;
• and
• two pairs of implantable electrodes connected to said field-programmable gate array and positioned on a subject's spinal cord at predetermined locations to produce an interferential current output waveform from said first and second circuits.

An electrical stimulator for the treatment of intractable pain syndromes, comprising:

• a pulse generator that generates digital signal pulses;
• a digital signal processor connected to said pulse generator that generates a sine-wave-like output waveform that is further processed into first and second circuits;
• and
• two pairs of implantable electrodes connected to said digital signal processor and positioned on a subject's dorsal column at predetermined locations to produce an interferential current output waveform from said first and second circuits.

An electrical stimulator for the treatment of intractable pain syndromes, comprising:

• a pulse generator that generates digital signal pulses;
• a field-programmable gate array connected to said pulse generator that generates a sine-wave-like output waveform that is further processed into first and second circuits;
• and
• two pairs of implantable electrodes connected to said field-programmable gate array and positioned on a subject's dorsal column at predetermined locations to produce an interferential current output waveform from said first and second circuits.

A method for the treatment of persistent chronic pain syndromes using electrical stimulation of the spinal cord, said method comprising:

• connecting a pulse generator to a digital signal processor and supplying digital signal pulses to said digital signal processor which produces a sine-wave-like current waveform which is further processed and output to first and second pairs of implantable electrodes, wherein first and second circuits are created, respectively;
• positioning said first pair of implantable electrodes on a subject's spinal cord at one set of diagonal corners of a targeted area;
• positioning said second pair of implantable electrodes on the subject's spinal cord at the other set of diagonal corners of the targeted area;
• and
• creating an interferential current with a base medium frequency of at least 500 Hz but no more than 20 KHz.

A method for electrical stimulation of the spinal cord, said method comprising:

• connecting a pulse generator to a digital signal processor and supplying digital signal pulses to said field-programmable gate array which produces a sine-wave-like current waveform which is further processed and output to first and second pairs ofimplantable electrodes, wherein first and second circuits are created, respectively;
• positioning said first pair of implantable electrodes on a subject's dorsal column at one set of diagonal corners of a targeted area;
• positioning said second pair of surface electrodes on the subject's dorsal column at the other set of diagonal corners of the targeted area;
• and
• creating an interferential current with a base medium frequency of at least 500 Hz but no more than 20 KHz.