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Updated: Aug 5, 2026
Implantation and Control of Wireless, Battery-free Systems for Peripheral Nerve Interfacing
Published on: October 20, 2021
A MXene/PDA/PLLA conduit with capacitive coupling response for wireless stimulation induced cell nerve
Fangwei Qi1, Mingming Xia2, Xiuwen Gao3
1Jiangxi Province Key Laboratory of Additive Manufacturing of Implantable Medical Device, Jiangxi University of Science and Technology, Nanchang 330013, China; Sichuan Provincial Engineering Research Center of Functional Development and Application of High-Performance Special Textile Materials, Chengdu Textile College, Chengdu 611731, China.
This study introduces a wireless electrical stimulation system for peripheral nerve regeneration. The novel MXene/PDA/PLLA conduit generates microcurrents, enhancing nerve stem cell differentiation and calcium ion influx.
Area of Science:
- Biomaterials Science
- Neuroscience
- Electrical Engineering
Background:
- Traditional electrical stimulation for nerve regeneration requires invasive external electrodes and wires.
- Developing wireless and minimally invasive methods is crucial for advancing peripheral nerve repair therapies.
Purpose of the Study:
- To design and evaluate a wireless electrical stimulation system utilizing capacitive coupling for enhanced peripheral nerve regeneration.
- To investigate the efficacy of a MXene/PDA/PLLA nerve conduit in generating therapeutic microcurrents for nerve stem cell differentiation.
Main Methods:
- Fabrication of a wireless system with a transmitting electrode (copper sheet) and a receiving electrode (MXene/PDA/PLLA nerve conduit).
- Utilized phase-field simulations to analyze the conductive network formation in the conduit.
- Employed finite-element analysis to model the electrical field distribution and current generation.
- Assessed the impact of induced currents on bone marrow-derived mesenchymal stem cells (BMSCs), including calcium ion influx and Nestin expression.
Main Results:
- The MXene/PDA/PLLA conduit demonstrated a 3D continuous conductive network facilitating charge transport.
- The system generated a localized electric field and microcurrents (276.5 μA, 478.7 mV at 1.5 V, 5 MHz).
- Induced currents significantly increased Ca2+ influx (2.5-fold) and upregulated Nestin expression (2.9-fold) in BMSCs, promoting nerve lineage commitment.
Conclusions:
- The developed wireless capacitive coupling system effectively promotes nerve stem cell differentiation.
- This technology offers a promising wireless strategy for peripheral nerve regeneration, overcoming limitations of conventional electrical stimulation.
- The study highlights the potential of MXene-based biomaterials in advanced neural tissue engineering applications.
