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February 8, 2022 02:02 am

Next-Generation Spinal Implants Help People With Severe Paralysis Walk, Cycle, and Swim

sciencehabit shares a report from Science.org: Three men paralyzed in motorcycle accidents have become the first success stories for a new spinal stimulation device that could enable faster and easier recoveries than its predecessors. The men, who had no sensation or control over their legs, were able to take supported steps within 1 day of turning on the electrical stimulation, and could stroll outside with a walker after a few months, researchers report today. The nerve-stimulating device doesn't cure spinal cord injury, and it likely won't eliminate wheelchair use, but it raises hopes that the assistive technology is practical enough for widespread use. For now, sending commands to the device is cumbersome. Users must select their desired movement on a tablet, which sends Bluetooth commands to a transmitter worn around the waist. That device must be positioned next to a 'pulse generator' implanted in the abdomen, which then activates electrodes along the spine. Setting up to use the stimulation takes 5 to 10 minutes. But the next generation of devices should allow users to activate the pulse generator by giving voice commands to a smartwatch. The company behind the technology plans to test this newer mobility system in a multisite clinical trial of 70 to 100 participants that the team hopes will lead to U.S. regulatory approval. The researchers reported their findings in the journal Nature Medicine.

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