Device targets chronic pain
Scientists in the US are developing a new device to deliver therapeutic spinal chord stimulation in a more targeted way.

Each year, more than 35,000 patients in the US are implanted with spinal cord stimulators to treat chronic pain, with up to half of recipients receiving very limited relief.
The new device, developed by scientists at the University of Virginia and University of Iowa Hospitals and Clinics, aims to reach nerve fibres deep within the spinal cord.
Standard devices, first introduced in 1967, work by delivering a low electrical current to the spinal cord that interferes with the body’s pain signals.
Such devices, however, are only able to deliver therapeutic current to a thin layer of nerve fibres along the outside of the spinal cord because the electrodes delivering the current are placed within the cerebrospinal fluid, which is itself conductive and dissipates some of the current.
The new device, called the Human Spinal Cord Modulation System (HSCMS), is designed to be in direct contact with the spinal cord, held in place by a small loop of wire.
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