纺织学报 ›› 2020, Vol. 41 ›› Issue (01): 56-62.doi: 10.13475/j.fzxb.20190101908

• 纺织工程 • 上一篇    下一篇

碳纤维/涤纶刺绣心电电极制备及其性能

董科1, 李思明1, 吴官正1, 黄虹蓉2, 林钟石2, 肖学良1()   

  1. 1.生态纺织教育部重点实验室(江南大学), 江苏 无锡 214122
    2.深圳市药品检验研究院(深圳市医疗器械检测中心), 广东 深圳 518057
  • 收稿日期:2019-01-10 修回日期:2019-10-24 出版日期:2020-01-15 发布日期:2020-01-14
  • 通讯作者: 肖学良
  • 作者简介:董科(1996—),男,硕士生。主要研究方向为智能纺织及其复合材料。
  • 基金资助:
    国家重点研发计划项目(2018YFC0810300);江苏省科技成果转化项目(BA2016117);福建省新型功能性纺织纤维及材料重点实验室(闽江学院)开放基金项目(FKLTFM1915);2016江苏省“博士集聚计划”项目(1066010241170090)

Preparation and properties of carbon fiber/polyester electrocardiogram monitoring embroidery electrode

DONG Ke1, LI Siming1, WU Guanzheng1, HUANG Hongrong2, LIN Zhongshi2, XIAO Xueliang1()   

  1. 1. Key Laboratory of Eco-Textiles (Jiangnan University), Ministry of Education, Wuxi, Jiangsu 214122, China
    2. Shenzhen Institute for Drug Control(Shenzhen Testing Center of Medical Devices), Shenzhen, Guangdong 518057, China
  • Received:2019-01-10 Revised:2019-10-24 Online:2020-01-15 Published:2020-01-14
  • Contact: XIAO Xueliang

摘要:

为制备一种生物相容性高的医疗级可穿戴电子服装用人体心电(ECG)监测电极,以碳纤维/涤纶复合长丝为电极导电材料,采用刺绣法开发了一种新型刺绣电极,对电极的电学性能和细胞毒性进行分析,并与镀银锦纶/涤纶刺绣电极进行对比;借助自行研发的可穿戴带式心电监测系统评价织物电极采集ECG信号质量。结果表明:镀银电极电学性能较优,但在长期心电信号监测中,碳基电极的阻抗变化与镀银电极相近;对比医用凝胶电极,2种刺绣电极采集到的ECG信号质量良好,均能满足医疗诊断需求;镀银电极具有很强的细胞毒性,其细胞存活率为3%,而碳基电极的细胞存活率为107%,细胞毒性为0级,具有良好生物相容性,符合医疗体外材料测试标准。

关键词: 织物电极, 碳纤维/涤纶复合长丝, 可穿戴监测系统, 心电信号, 生物相容性, 医疗健康

Abstract:

Aiming at the preparation of a biocompatible human electrocardiogram (ECG) monitoring electrode for wearable electronic clothing for medical care, a new carbon fiber/polyester embroidery fabric electrode was developed by embroidering carbon fiber/polyester composite filaments to form a conductive material. The electrical properties and cytotoxicity of the electrodes were tested and analyzed. A self-developed wearable belt ECG monitoring system was used to evaluate the quality of the human body ECG signal collected by the carbon fiber/polyester fabric electrodes in comparison with silver-plated polyamide/polyester embroidery electrodes. The results demosntrate that the silver plated electrodes had better electrical properties, but for long-term ECG signal monitoring the impedance of the carbon fiber/polyester electrodes appeared to have similar performance to that of the silver plated electrodes. Compared with the medical gel electrode, the ECG signals collected from the two types of embroidery electrodes demonstrate good quality, meeting the needs for medical diagnosis. Cytotoxicity test revealed that silver-plated electrodes were highly cytotoxic with a cell survival rate of only 3%, whilst for the carbon based electrodes the cell survival rate was 107% with nil cytotoxicity. The research show that the embroidery carbon based electrodes have good biocompatibility and meets the test standard of medical materials in vitro.

Key words: fabric electrode, carbon fiber/polyester composite filament, wearable monitoring system, electrocardiogram signal, biocompatibility, medical health

中图分类号: 

  • TS101.4

图1

纱线切片的显微镜照片"

图2

刺绣织物电极"

表2

刺绣工艺参数"

织物电极 针迹
类型
针迹
长度/
mm
针迹
间距/
mm
针速/
(r·min-1)
碳纤维/
涤纶刺绣电极
直线针 5 1.5 500
镀银锦纶/
涤纶刺绣电极
直线针 5 1.5 500

图3

阻抗测试原理图"

图4

皮肤-电极阻抗测试"

图5

可穿戴心电采集系统"

图6

显微镜下浸提液中细胞形态"

图7

人体皮肤-电极阻抗测试结果"

图8

织物电极采集的心电信号"

表3

各电极的心电信号质量评价"

电极名称 QRS-波群 P-波 T-波 R-波振幅 稳定时间 R-波振幅变化 分数
合计
实际 分数 实际 分数 实际 分数 实际/mV 分数 实际/s 分数 实际/mV 分数
凝胶粘贴电极 存在 2 存在 2 存在 2 2.40 2 ≤10 1 0.06 1 10
碳纤维/
涤纶刺绣电极
存在 2 存在 2 存在 2 2.08 1 12.3 0 0.12 0 7
镀银锦纶/
涤纶刺绣电极
存在 2 存在 2 存在 2 2.11 1 ≤10 1 0.18 0 8
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