National Institute of Advanced Industrial Science and Technology (AIST), Research Center for Ubiquitous MEMS and Micro Engineering, Tsukuba, 305-8564, Japan.
National Institute of Advanced Industrial Science and Technology (AIST), Flexible Electronics Research Center, Tsukuba, 305-8564, Japan.
Sci Rep. 2019 Apr 11;9(1):5897. doi: 10.1038/s41598-019-42027-x.
To develop a wearable multi-lead electrocardiogram (ECG) measuring system, we fabricated the electrodes and wires by using electrostatic flocking technology on a textile. By using this technology, it was possible to fabricate many electrodes and wires, simultaneously. Also the flocked electrodes and wires had stretchability and washing resistance properties. To use dry electrodes, it is important to reduce the influence of motion artifacts (MAs). The results of the experiment with the skin phantom revealed that the contact pressure between the skin and the electrode is an important factor in MA reduction. Then, we conducted experiments with a human body to determine the relationship between the contact pressure and the MAs. Under the pressures of 200 Pa and 500 Pa, MAs were observed. Meanwhile, under the pressures of 1000 Pa, 2000Pa and 4000 Pa, the ECG signals under rest and deep breathing conditions were able to be measured without MAs. Considering the comfortability, the contact pressure from 1000 Pa to 2000 is preferable. Finally, we fabricated the wearable ECG measuring system and succeeded in measuring 18-lead ECG signals. The measured ECG waveform is in good agreement with the ECG waveform measured by a commercial system.
为了开发一种可穿戴的多导联心电图（ECG）测量系统，我们使用静电植绒技术在纺织品上制造了电极和导线。通过使用这项技术，就可以同时制造出许多电极和导线。此外，植绒电极和导线具有可拉伸性和耐洗性。为了使用干式电极，减少运动伪影（MA）的影响很重要。使用皮肤仿体进行的实验结果表明，皮肤和电极之间的接触压力是减少 MA 的一个重要因素。然后，我们进行了人体实验，以确定接触压力与 MA 之间的关系。在 200Pa 和 500Pa 的压力下观察到 MA。同时，在 1000Pa、2000Pa 和 4000Pa 的压力下，在休息和深呼吸状态下的 ECG 信号可以无 MA 地测量。考虑到舒适度，接触压力在 1000Pa 到 2000Pa 之间是比较理想的。最后，我们制造了可穿戴的 ECG 测量系统，并成功地测量了 18 导联 ECG 信号。测量得到的 ECG 波形与商用系统测量得到的 ECG 波形吻合较好。
