According to Lin, neither strategy is ideal: The former compromises the implant's ability to precisely target important nerves, and the latter not only causes damage to the tissue during implantation surgery but also raises biocompatibility issues. The team's results appear in Nano Letters.Ĭonventional spinal stimulators are implanted either on the spinal cord's dorsal surface (facing the person's back) or directly into the spinal tissue. Our innovative approach addresses a key challenge faced by many existing spinal stimulator technologies: achieving precise stimulation and minimal invasiveness," said member Dinchang Lin, an assistant professor in the Whiting School of Engineering's Department of Materials Science and Engineering and a core researcher at Johns Hopkins Institute for NanoBioTechnology.Īssistant professor, Whiting School of Engineering "The concept behind spinal stimulators is their ability to bypass injured regions, sending essential motor commands from the brain to the spinal region responsible for leg motions. The novel apparatus, a spinal stimulator, can be placed below the injury site through a simple injection, setting it apart from conventional stimulators, which are bulky and must be deployed farther from the nerves that control leg movements. A Johns Hopkins materials scientist and collaborators have developed a tiny device that may hold promise for restoring mobility to those with lower limb paralysis, a condition affecting approximately 1.4 million Americans.
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