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Updated: Jun 28, 2026
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Fabrication of High Contact-Density, Flat-Interface Nerve Electrodes for Recording and Stimulation Applications
Published on: October 4, 2016
A nerve cuff electrode for controlled reshaping of nerve geometry.
Anthony V Caparso1, Dominique M Durand, Joseph M Mansour
1Neural Engineering Center, Department of Biomedical Engineering, Case Western Reserve University, Cleveland, Ohio 44106, USA.
Journal of Biomaterials Applications
|November 7, 2008
Summary
This study introduces the Slowly Closing - Flat Interface Nerve Electrode (SC-FINE) for controlled nerve reshaping. The SC-FINE utilizes biodegradable polymers to achieve slow, predictable nerve geometry modification for improved stimulation.
Area of Science:
- Biomedical Engineering
- Materials Science
- Neuroscience
Background:
- The Flat Interface Nerve Electrode (FINE) reshapes nerves but lacks controlled closure rates.
- Controlling nerve geometry is crucial for selective stimulation and improved neural interfacing.
Purpose of the Study:
- To develop a novel nerve electrode, the Slowly Closing - FINE (SC-FINE), for slow and controllable nerve geometry reorganization.
- To integrate controllable degradation properties into nerve electrode design.
Main Methods:
- Combining the FINE electrode with Poly (DL lactic-co-glycolic) acid (PLGA) films (50/50 and 65/35 ratios).
- Investigating the effect of PLGA integration on electrode opening height (OH) and closure time course.
- Conducting in vitro degradation studies and in vivo chronic implantation experiments in rats.
Main Results:
- SC-FINEs with 50/50 and 65/35 PLGA exhibited increased average OH (1.66 +/- 0.45 mm and 2.05 +/- 0.55 mm, respectively).
- PLGA addition controlled in vitro closure times (16 +/- 1 days for 50/50, 14-16 hours for 65/35).
- In vivo experiments showed similar reshaping periods to in vitro results.
Conclusions:
- The SC-FINE successfully achieves slow and controllable nerve reshaping.
- PLGA integration offers a viable method for tuning nerve electrode closure dynamics.
- SC-FINE technology holds promise for advanced neural interfacing applications.
