1. Electrodes for Measuring Bioimpedance
Biomedical Electronics IEM3240 – „Electrodes for Measuring Bioimpedance“
Electrodes for Measuring Bioimpedance
Examples from the scientific papers
Margus Metshein
PhD student of TUT
Tallinn, 8. Nov. 2013

2. Biomedical Electronics IEM3240 – „Electrodes for Measuring Bioimpedance“
Surface electrodes
Wirelessly powered and connected active electrode which is screen printed directly on to fabric material.
Source [1]
The electrodes, realized with a yarn, where a stainless steel wire is twisted around a cotton based textile yarn.
Source [2]
Active electrode, manufactured as circular FR4 PCB with the bottom layer forming a contact surface for measuring simultaneously bioimpedance and EEG.
Source [3]
Sources
[1] H.-J .Yoo, J. Yoo, L. Yan, “Wireless Fabric Patch Sensors for Wearable Healthcare,“ 32nd Annual Internat. Conf. of the IEEE EMBS, Argentina, 2010, pp
[2] G.D. Gargiulo, G. Cohen, A.L. McEwan, T.I. Oh, A. Mohamed, J. Tapson, D.T. Nguyen, A. van Schaik, A. Wabnitz, “Active Electrode Design Suitable for Simultaneous EIT and EEG,“ In Electronics Letters, 2013, Vol. 48, Iss. 25, pp
[3] G. Loriga, N. Taccini, D. De Rossi, R. Paradiso,“Textile Sensing Interfaces for Cardiopulmonary Signs Monitoring,“ Conf . Proc. IEEE Eng. Med. Biol. Soc., Shanghai, China, 2005;7, pp
Tallinn, 8. Nov. 2013

3. Biomedical Electronics IEM3240 – „Electrodes for Measuring Bioimpedance“
Invasive electrodes
Needle electrode for measuring the impedance spectroscopy on the tip of the cannula to navigate the electrode based tissue classification.
Source [4]
Needle, designed to measure the bioimpedance of kidney. Impedance is measured between exposed tip (2) and sheath (1).
Source [5]
Array of ten needles for impedance measurements to produce a 2D invasive impedance tomogram.
Source [6]
Sources
[4] D. Trebbels, M. Jugl, R. Zengerle , “Real-Time Cannula Navigation in Biological Tissue with high temporal and spatial resolution based on Impedance Spectroscopy,“ Conf. Proc. IEEE Eng. Med. Biol. Soc. Buenos Aires, Argentina, 2010, pp
[5] D.J. Hernandez, V.A. Sinkov, W.W. Roberts, M.E. Allaf, A. Patriciu, T.W. Jarrett, L.R. Kavoussi, D. Stoianovici, “Measurement of Bio-impedance with a Smart Needle to Confirm Percutaneous Kidney Access,“ Journal of Urol., 2001; Vol. 166(4), pp
[6] Ø.G. Martinsen, H. Kalvøy, S. Grimnes, B. Nordbotten, P.K. Hol, E. Fosse, H. Myklebust, L.B. Becker, “Invasive Electrical Impedance Tomography for Blood Vessel Detection,“ Open Biomed. Eng. J. 2010, pp
Tallinn, 8. Nov. 2013

4. Biomedical Electronics IEM3240 – „Electrodes for Measuring Bioimpedance“
Microelectrodes
Source [7]
A custom made CMOS electrode with active integrated circuitry in rigid case designed by Plessey Semiconductor for capacitive measurement.
Picture from:
Source [8]
Microelectrode, made in CMOS technology, for measuring the bioimpedance of single cells.
Multi-electrode array sensor chip layout in CMOS technology for neural signal recording.
Source [9]
Sources
[7] A. Samieipour,“Measurement of the Thoracic Bioimpedance,“ Master thesis, Tallinn Univ. of Technology, 2013.
[8] A. Yúfera, A. Rueda, “A CMOS Bio-Impedance Measurement System,“ 12th Internat. Symp. on Design and Diagnostics of Electronic Circuits & Systems, Spain, 2009, pp
[9] L. Wang, D.S. Freedman, R.W. Knepper, M.S. Ünlü, M. Sahin, “A 16 × 16 Multi-electrode Array with Integrated CMOS Amplifiers for Neural Signal Recording,“ In IEEE Conf. of Biomed. Circuits and Systems (BioCAS), San Diego, USA, 2011, pp
Tallinn, 8. Nov. 2013

5. Other interesting electrodes
Biomedical Electronics IEM3240 – „Electrodes for Measuring Bioimpedance“
Other interesting electrodes
A so called „Smart Jacket“ that enables ECG measurement of neonatale by using textile electrodes.
Localized EBI measurements – the usage of wet plate surface electrodes.
Source [10]
Picture from:
Source [11]
The analysis of bovine milk quality by using biological impedance measurements using electrical impedance spectroscopy.
Sources
[10] W. Chen, S. Bouwstra, S.B. Oetomo, L. Feijs,“Smart Jacket Design for Neonatal Monitoring with Wearable Sensors,“ In Proc. of the 2009 Sixth Int. Workshop on Wearable and Implantable Body Sensor Networks, Washington, USA, 2009, pp
[11] P. Bertemes-Filho, R. Valicheski, R.M. Pereira, A.S. Paterno, “Bioelectrical impedance analysis for bovine milk: preliminary results,“ Journal of Physics: Conf. Ser., Vol. 224 Iss. 1, 2010.
Tallinn, 8. Nov. 2013