Development and Evaluation of Dry Microneedle Electrode for Surface Electromyography
摘要
This research investigates the feasibility of utilizing microneedle electrodes for surface electromyography (EMG), aiming to address challenges associated with current manufacturing methods, including conductivity, biosafety, and production costs, which hinder widespread adoption of this electrode type. Motivated by the limitations of traditional wet electrodes, such as skin preparation requirements, irritation from electrolysis gel, and impedance issues, this study explores the potential of microneedle electrodes as an alternative EMG signal acquisition method. The primary objective is to develop microneedle electrodes capable of penetrating the stratum corneum without breakage, enabling reliable signal recording without skin irritation or electrolysis gel. The methods employed of and include fabricating electrodes using PLA plastic, followed by Nickel electroless plating and subsequent evaluation of electrode performance in signal acquisition. Along with other evaluation assessments of electrode effectiveness such as fracture test tests, impedance measurement, and evaluation of the biological potential of the material when in contact with the skin. Results demonstrate the successful penetration of microneedle electrodes through the stratum corneum and achieving comparable signal recording efficiency to conventional wet electrodes without skin preparation. Impedance measurements reveal favorable characteristics of microneedle electrodes, indicating their suitability for long-term signal monitoring. Further analysis, including morphological assessment and biocompatibility testing, corroborates the potential of microneedle electrodes as an alternative to wet electrodes. These findings highlight the promising potential of microneedle electrodes as a reliable and convenient alternative for surface EMG recording, addressing the limitations of traditional electrodes and enhancing accessibility and usability in clinical and research settings. This advancement is expected to contribute to future advancements in microneedle electrode research and development.