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Updated: May 14, 2026
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Autonomous and Rechargeable Microneurostimulator Endoscopically Implantable into the Submucosa
Published on: September 27, 2018
An implantable neural stimulator for intraspinal microstimulation.
Philip R Troyk1, Vivian K Mushahwar, Richard B Stein
1Illinois institute of Technology, Chicago, IL 60616, USA. troyk@iit.edu
Summary
This study presents a wireless implantable stimulator for animal research, advancing intraspinal stimulation (ISMS) to restore walking in spinal cord injury patients. The system enables monitoring of stimulation during chronic experiments, paving the way for human trials.
Area of Science:
- Neuroscience
- Biomedical Engineering
- Rehabilitation Engineering
Background:
- Spinal cord injury (SCI) disrupts motor control, necessitating novel therapeutic strategies.
- Intraspinal stimulation (ISMS) targets residual neural networks below the lesion for motor function restoration.
- Existing functional electrical stimulation (FES) methods have limitations in restoring extensive walking capabilities.
Purpose of the Study:
- To develop and describe a wireless implantable stimulator for chronic animal experiments.
- To establish a foundation for a human-suitable ISMS system for SCI rehabilitation.
- To demonstrate the feasibility of wireless ISMS for inducing coordinated locomotion.
Main Methods:
- Design and implementation of a wireless implantable stimulation system.
- Utilizing ISMS to activate spinal cord neural networks in animal models.
- Incorporating reverse telemetry for real-time monitoring of stimulation parameters.
- Conducting chronic animal experiments to assess system performance.
Main Results:
- Successful demonstration of a wireless implantable stimulator for chronic animal studies.
- Validation of ISMS in producing coordinated walking patterns in animal models.
- Capability of reverse telemetry for monitoring stimulating electrode voltages.
Conclusions:
- The developed wireless ISMS system is feasible for chronic animal experimentation.
- This technology provides a basis for future human clinical applications in SCI.
- ISMS, coupled with advanced feedback, shows significant potential for restoring walking function after SCI.
