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An experimental implant for applying a DC electrical field to peripheral nerve
Journal of Neuroscience Methods
|March 1, 1987
Summary
This study developed an implantable device to deliver tiny electrical currents, enhancing nerve fiber growth toward the cathode. This technology shows promise for improving nerve regeneration in clinical settings.
Area of Science:
- Biomedical Engineering
- Neuroscience
- Regenerative Medicine
Background:
- Nerve fibers exhibit preferential growth towards the cathode in electrical fields.
- Existing methods for studying electrical stimulation's effect on nerve regeneration are limited.
Purpose of the Study:
- To investigate the effects of electrical stimulation on in vivo nerve regeneration.
- To develop an inexpensive, implantable current source for delivering controlled DC current to nerves.
Main Methods:
- Developed an implantable current source delivering 0.57 microA DC current via wick electrodes.
- Measured current density in vivo using a vibrating probe.
- Compared current density in unoperated nerves versus nerves near the implant.
Main Results:
- Current density near wick electrodes (23.39 microA/cm2) was significantly higher than in unoperated nerves (0.19 microA/cm2).
- The implant reliably delivered a minute DC current.
Conclusions:
- The developed implantable current source is a potentially useful tool for enhancing nerve regeneration.
- This technology offers a promising approach for clinical applications in nerve repair.