Surface electromyography (sEMG) sensors play a critical role in diagnosing muscle conditions and enabling prosthetic device control, especially for lower extremity robotic legs. However, challenges arise when utilizing such sensors on residual limbs within a silicon liner worn by amputees, where dynamic pressure, narrow space, and perspiration can negatively affect sensor performance. Existing commercial sEMG sensors and newly developed sensors are unsuitable due to size and thickness, or susceptible to damage in this environment. In this paper, our sEMG sensors are tailored for amputees wearing sockets, prioritizing breathability, durability, and reliable recording performance. By employing porous PDMS and Silbione substrates, our design achieves exceptional permeability and adhesive properties. The serpentine electrode pattern and design are optimized to improve stretchability, durability, and effective contact area, resulting in a higher signal-to-noise ratio (SNR) than conventional electrodes. Notably, our proposed sensors wirelessly enable to control of a robotic leg for amputees, demonstrating its practical feasibility and expecting to drive forward neuro-prosthetic control in the clinical research field near future.

表面肌电 (sEMG) 传感器在诊断肌肉状况和实现假肢设备控制方面发挥着关键作用，特别是对于下肢机械腿。然而，当在截肢者佩戴的硅衬垫内的残肢上使用此类传感器时，会出现挑战，其中动态压力、狭窄的空间和排汗会对传感器性能产生负面影响。现有的商用 sEMG 传感器和新开发的传感器由于尺寸和厚度而不适用，或者容易在这种环境中损坏。在本文中，我们的 sEMG 传感器专为佩戴插座的截肢者量身定制，优先考虑透气性、耐用性和可靠的记录性能。通过采用多孔 PDMS 和 Silbione 基材，我们的设计实现了卓越的渗透性和粘合性能。蛇形电极图案和设计经过优化，可提高拉伸性、耐用性和有效接触面积，从而实现比传统电极更高的信噪比 (SNR)。值得注意的是，我们提出的传感器能​​够无线控制截肢者的机械腿，证明了其实际可行性，并有望在不久的将来推动临床研究领域的神经假肢控制。