A novel spinal neuromodulation device known as the Nevro system can relieve back pain in patients who have not found relief through conventional spinal cord stimulation, according to a study.
Researchers at Guy’s & St Thomas’ Hospital in London, UK, enrolled 30 patients who had an average back pain Visual Analogue Score (VAS) of eight out of ten and an average leg pain VAS score of six out of ten.
Dual octapolar, percutaneous leads were placed sequentially near the anatomic midline, between the thoracic area of the spinal column.
The Nevro system device was then connected to a rechargeable implantable pulse generator capable of delivering waveforms with frequencies up to 10kHz.
The study results showed that at three months, the average VAS score for back pain fell to 2.9 and the average VAS score for leg pain fell to 2.2.
At six months, the average back and leg pain VAS scores both fell to 1.6.
In addition, the device improved patient function without movement-induced shocking, and subjects reported improved sleep when they used the device overnight.
Spinal neuromodulation aims to achieve paresthesia, which alters the pain sensation into tingling sensation through stimulation of certain pain pathways.