Wearable multilead ECG sensing systems using on-skin stretchable and breathable dry adhesives

作者：Xie, Yingxi; Lu, Longsheng; Wang, Wentao^*; Ma, Huan

来源：Bio-Design and Manufacturing, 2024.

DOI：10.1007/s42242-023-00268-w

• Multilead electrocardiogram
• Dry electrodes
• Wearable electronics
• Wireless transmission

Electrocardiogram (ECG) monitoring is used to diagnose cardiovascular diseases, for which wearable electronics have attracted much attention due to their lightweight, comfort, and long-term use. This study developed a wearable multilead ECG sensing system with on-skin stretchable and conductive silver (Ag)-coated fiber/silicone (AgCF-S) dry adhesives. Tangential and normal adhesion to pigskin (0.43 and 0.20 N/cm(2), respectively) was optimized by the active control of fiber density and mixing ratio, resulting in close contact in the electrode-skin interface. The breathable AgCF-S dry electrode was nonallergenic after continuous fit for 24 h and can be reused/cleaned (>100 times) without loss of adhesion. The AgCF encapsulated inside silicone elastomers was overlapped to construct a dynamic network under repeated stretching (10% strain) and bending (90 degrees ;) deformations, enabling small intrinsic impedance (0.3 Omega, 0.1 Hz) and contact impedance variation (0.7 k Omega) in high-frequency vibration (70 Hz). All hard/soft modules of the multilead ECG system were integrated into lightweight clothing and equipped with wireless transmission for signal visualization. By synchronous acquisition of I-III, aVR, aVL, aVF, and V4 lead data, the multilead ECG sensing system was suitable for various scenarios, such as exercise, rest, and sleep, with extremely high signal-to-noise ratios.

• 单位
  长沙理工大学; 广东省心血管病研究所; 广东省人民医院