Pilot Study to Examine the Feasibility of the Dynamic Interferential Spinal Cord Stimulation System™ (DISCSS™)

Inclusion Criteria

• •1. Age greater than 21 years and less than 80 years
• •2. Has a diagnosis of chronic neuropathic pain of trunk and limbs
• •3. Is eligible for and participating in a spinal cord stimulation trial of a commercially available SCS trial system. Subjects will be evaluated at the end of the background Commercial SCS Device phase for complications and appropriateness to continue to the investigational phase with the DISCSS™ system. Complications from the background phase with the commercial SCS device may include, but are not limited to unusual pain or discomfort during the trial stimulation, local skin reactions or infection at the implant site.
• •4. Has a Back Pain Score of minimum intensity 5.0 on a Numeric Rating Scale (NRS)
• •5. Has an NRS Back Pain Score that is greater than both Leg Pain Scores
• •6. Is not a candidate for revision surgery
• •7. Has completed a minimum of 6 weeks of conservative therapy (physical therapy, anti-inflammatory medications, or similar therapies) with limited or no reduction in back pain
• •8. Is willing to adhere to the warnings associated with the DISCSS™ system
• •9. Is willing to halt and/or modify the use of all prescription and over-the-counter analgesics per the Investigator's direction during study participation
• •10. Is capable of providing written informed consent
• •11. Is able to comply with the requirements of study visits, follow-up phone visits and self-assessment questionnaires