A pain relief system that involves delivering electrical impulses through the skin to an implanted receiver is being launched on the US market. Developed by Minnesota-based medical technology company Medtronic Inc, the trademarked `Mattrix' neurostimulation system offers patients with chronic pain in the trunk or limbs a reversible means of relieving that pain. (See also following story `Medtronic seeks clearance on improved pacemakers'). The system works by delivering electrical impulses via radio-frequency transmission from an external, belt-mounted transmitter through the skin to an implanted receiver which retransmits the signal to the spinal cord via insulated leads. The …
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