Can a simple muscle zap boost pain relief for back pain sufferers?

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Patients with PSPS type 2 * Patients with predominant back pain * Patients with SCS(BurstDR) stimulation in situ with \>50% pain relief. Patients have to be satisfied with their existing SCS therapy and predominantly use a BurstDR stimulation program. ) (Only responders to that therapy should be included, not patients who have not responded to their therapy so far.) * Patient must be willing and able to provide written informed consent before any clinical investigation-related procedure * Age ≥18 y * Low back pain baseline score of ≥6 on NRS before spinal cord stimulation therapy and a MCID (Minimal clinically important difference) of \>30% with SCS(BurstDR) stimulation. * Willing and able to comply with the instructions for use, operate the study device, and comply with this clinical investigation plan Exclusion Criteria: * Pathology seen on imaging tests that is clearly identified and is likely the cause of the CLBP, that can be addressed with surgery, or related to these origins: * vascular causes (eg, aortic aneurysm) * spinal infection (eg, osteomyelitis) * inflammation or damage to the spinal cord (eg, arachnoiditis or syringomyelia) * tumor or spinal metastases * Severe scoliotic deformity (\>11◦ in thoracic or lumbar spine) * Primary symptom of leg pain, or leg pain is greater than back pain * Has widespread pain (eg, fibromyalgia) or pain in other area(s), not intended to be treated in this study (eg, neck pain, shoulder pain) * Patient has used a morphine equivalent daily dose of \>50 MME in the last 30 d * Patients with regular intake of systemic steroids (except inhaled steroids used to treat asthma) * Known allergic reaction to implanted materials * Patient has a history of or existing intrathecal drug pump * Patient has previous experience with neuromodulation devices, including a failed trial * BMI \>40 * Patient is enrolled, or intends to participate, in another clinical drug and/or device study or registry that may interfere with the results of this study. * Presence of other anatomic or comorbid conditions, or other medical, social, or psychologic conditions that, in the investigator's opinion, could limit the subject's ability to participate in the clinical investigation or to comply with follow-up requirements of the clinical investigation results * Failed psychologic evaluation * Suspicion or evidence of untreated mental illness, substance abuse, or drug-seeking behavior * Patient is in current litigation for back pain/injury, or is currently receiving worker's compensation * Pregnant or nursing subjects and those who plan pregnancy during the clinical investigation follow-up period.