Dr. Hyunmins's paper on "Soft-Actuated Cuff Electrodes with Minimal Contact for Bidirectional Peripheral Interfaces" has been published in Advanced Materials.

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Soft-Actuated Cuff Electrodes with Minimal Contact for Bidirectional Peripheral Interfaces

Neural interfaces with embedded electrical functions, such as cuff electrodes,are essential for monitoring and stimulating peripheral nerves. Still,several challenges remain with cuff electrodes because sutured devices candamage the nerve by high pressure and the secured contact of electrodes withthe nerve is hard to accomplish, which however is essential in maintainingelectrical performance. Here, a sutureless soft-actuated cuff electrodes (SACE)that can envelop the nerve conveniently by creating a bent shape controlledupon fluid injection, is introduced. Moreover, fluid injection protrudespart of the device where electrodes are formed, thereby achieving minimized,soft but secure contact between the electrodes and the nerve. In vivoresults demonstrate the successful recording and stimulation of peripheralnerves over time up to 6 weeks. While securing contact with the nerve,the implanted electrodes can preserve the nerve intact with no reductionin blood flow, thereby indicating only minimal compressive force appliedto the nerve. The SACE is expected to be a promising tool for recordingand stimulation of peripheral nerves toward bidirectional neuroprostheses.

Link: https://doi.org/10.1016/j.brs.2024.10.001