Clinical trials

This study will evaluate whether the investigational Hypersound system reduces pain in adults with chronic neuropathic or radicular pain. Hypersound uses externally positioned antennas to deliver radiofrequency energy intended to stimulate peripheral nerves without an implant. Approximately 71 participants will be randomly assigned in a two-to-one ratio to active Hypersound or sham treatment. Treatment consists of ten 15-minute sessions, twice weekly over five weeks. Participants will be unaware of their assigned treatment. The main comparison is the percentage of participants with at least a 50% decrease in average pain intensity at 90 days after the first treatment. Pain will be measured using a 100-mm visual analog scale referring to average pain over the preceding 24 hours. Safety and additional measures of pain and daily functioning will also be assessed. Participants initially assigned to sham will be offered active treatment after the 90-day assessment and followed for another 90 days after their first active treatment.

First, the subject will undergo screening and provide informed consent. Baseline measurements are then taken. The subject remains seated with back support throughout the session. The technician verifies and marks the knee for treatment and wraps an antenna applicator strap around the lower leg near the knee. The device is turned on in test mode to confirm the therapy location, with the subject identifying when they feel a sensation over their pain area. The power threshold for this sensation is recorded. The therapy, which lasts 15 minutes, is delivered at 90% of this threshold to ensure the subject does not feel it. After therapy, post-treatment measurements are taken.