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Updated: May 23, 2026
Implantation and Control of Wireless, Battery-free Systems for Peripheral Nerve Interfacing
Published on: October 20, 2021
Light-Controlled Battery-Integrated Nerve Conduit for Peripheral Nerve Pain Management
Er He1, Haidong Wang1, Fangyan Li1
1National Laboratory of Solid State Microstructures, Jiangsu Key Laboratory of Artificial Functional Materials, Chemistry and Biomedicine Innovation Center, Collaborative Innovation Center of Advanced Microstructures, College of Engineering and Applied Sciences, Nanjing University, Nanjing 210023, China.
This study introduces a tiny, light-controlled nerve conduit for pain management. The implantable device offers precise, long-term electrical stimulation without external circuitry, effectively inhibiting peripheral nerve pain for up to 30 days.
Area of Science:
- Biomedical Engineering
- Neuroscience
- Materials Science
Background:
- Pharmaceuticals are standard for pain management but have risks like dependence and limited efficacy.
- Implantable electroceuticals offer a promising alternative, but current devices lack long-term, reliable in situ stimulation.
- There is a need for advanced neuromodulation devices for effective and safe pain management.
Purpose of the Study:
- To develop a novel, compact, and efficient implantable electroceutical device for precise neuromodulation.
- To create a light-controlled nerve conduit with tunable electrical output for long-term pain inhibition.
- To demonstrate the in vivo efficacy of the device in managing peripheral nerve pain.
Main Methods:
- A light-controlled, battery-integrated nerve conduit was designed using light-induced water molecule relocation for tunable electrolyte properties.
- Device output was precisely modulated via light intensity and pulsing protocols, eliminating external circuitry.
- In vivo studies were conducted to assess the device's efficacy in inhibiting peripheral nerve pain.
Main Results:
- The developed nerve conduit has a minimal volume of 26 mm³, enabling direct nerve interfacing.
- Precise and programmable neuromodulation in situ was achieved through light control.
- The device demonstrated sustained efficacy in inhibiting peripheral nerve pain for up to 30 days in vivo.
Conclusions:
- The light-controlled nerve conduit represents a significant advancement in implantable electroceuticals for pain management.
- The device offers a compact, energy-efficient, and tunable solution for long-term, in situ neuromodulation.
- This technology holds potential for developing next-generation, minimally invasive pain therapies.
