Center for Micro-BioRobotics, Istituto Italiano di Tecnologia, Viale Rinaldo Piaggio 34, Pontedera, 56025 Pisa, Italy.
Future Manufacturing Processes Research Group, School of Mechanical Engineering, Faculty of Engineering, University of Leeds, Leeds LS2 9JT, UK.
Sensors (Basel). 2021 Feb 8;21(4):1197. doi: 10.3390/s21041197.
The development of dry, ultra-conformable and unperceivable temporary tattoo electrodes (TTEs), based on the ink-jet printing of poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) on top of commercially available temporary tattoo paper, has gained increasing attention as a new and promising technology for electrophysiological recordings on skin. In this work, we present a TTEs epidermal sensor for real time monitoring of respiration through transthoracic impedance measurements, exploiting a new design, based on the application of soft screen printed Ag ink and magnetic interlink, that guarantees a repositionable, long-term stable and robust interconnection of TTEs with external "docking" devices. The efficiency of the TTE and the proposed interconnection strategy under stretching (up to 10%) and over time (up to 96 h) has been verified on a dedicated experimental setup and on humans, fulfilling the proposed specific application of transthoracic impedance measurements. The proposed approach makes this technology suitable for large-scale production and suitable not only for the specific use case presented, but also for real time monitoring of different bio-electric signals, as demonstrated through specific proof of concept demonstrators.
基于喷墨打印技术将聚（3,4-亚乙基二氧噻吩）聚苯乙烯磺酸盐（PEDOT:PSS）打印在市售的临时纹身纸上，开发出了干燥、超贴合且难以察觉的临时纹身电极（TTE），这种技术作为一种在皮肤表面进行电生理记录的新技术受到了越来越多的关注。在这项工作中，我们提出了一种 TTE 表皮传感器，通过经胸廓阻抗测量来实时监测呼吸，该传感器采用了一种新的设计，基于软丝网印刷的 Ag 墨水和磁互联的应用，保证了 TTE 与外部“对接”设备之间可重新定位、长期稳定和可靠的互联。在专用实验装置和人体上验证了 TTE 的效率以及在拉伸（高达 10%）和随时间推移（高达 96 小时）情况下的建议连接策略，满足了经胸廓阻抗测量的特定应用需求。所提出的方法使这项技术适合大规模生产，不仅适用于所提出的特定用例，还适用于不同生物电信号的实时监测，通过特定的概念验证演示进行了证明。
