Properties of screen printed electrocardiography smartware electrodes investigated in an electro-chemical cell

BioMedical Engineering OnLine

Linda Rattfält¹  Fredrik Björefors³  David Nilsson²  Xin Wang²  Petronella Norberg²  Per Ask¹ 

[1] Department of Biomedical Engineering, Linköping University, SE-581 83, Linköping, Sweden

[2] Acreo AB, Sandgatan 31, SE-602 21, Norrköping, Sweden

[3] Department of Materials Chemistry, Box 538SE-751 21, Uppsala, Sweden

关键词: Smartware electrodes;    Electrode potential;    Electrode impedance;    ECG;    Screen printed electrodes;   

Others  :  797748
DOI  :  10.1186/1475-925X-12-64

 received in 2013-04-16, accepted in 2013-06-30,  发布年份 2013

【 摘 要 】

Background

ECG (Electrocardiogram) measurements in home health care demands new sensor solutions. In this study, six different configurations of screen printed conductive ink electrodeshave been evaluated with respect to electrode potential variations and electrode impedance.

Methods

The electrode surfaces consisted of a Ag/AgCl-based ink with a conduction line of carbon or Ag-based ink underneath. On top, a lacquer layer was used to define the electrode area and to cover the conduction lines. Measurements were performed under well-defined electro-chemical conditions in a physiologic saline solution.

Results

The results showed that all printed electrodes were stable and have a very small potential drift (less than 3 mV/30 min). The contribution to the total impedance was 2% of the set maximal allowed impedance (maximally 1 kΩ at 50 Hz), assuming common values of input impedance and common mode rejection ratio of a regular amplifier.

Conclusion

Our conclusions are that the tested electrodes show satisfying properties to be used as elements in a skin electrode design that could be suitable for further investigations by applying the electrodes on the skin.

【 授权许可】

   
2013 Rattfält et al.; licensee BioMed Central Ltd.

【 图 表 】

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