Tallinn, 8. Nov. 2013 1

Electrodes for Measuring

BioimpedanceExamples from the scientific papers

Margus MetsheinPhD student of TUT

Biomedical Electronics IEM3240 – „Electrodes for Measuring Bioimpedance“

Tallinn, 8. Nov. 2013 2

Wirelessly powered and connected active electrode which is screen printed directly on to fabric material.

Surface electrodes

The electrodes, realized with a yarn, where a stainless steel wire is twisted around a cotton based textile yarn. Active electrode, manufactured as

circular FR4 PCB with the bottom layer forming a contact surface for measuring simultaneously bioimpedance and EEG.

Biomedical Electronics IEM3240 – „Electrodes for Measuring Bioimpedance“

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. 5254-7.

[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. 1583-4.

[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. 7349-52.

Source [1]

Source [2]

Source [3]

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Array of ten needles for impedance measurements to produce a 2D invasive impedance tomogram.

Invasive electrodes Needle electrode for measuring the

impedance spectroscopy on the tip of the cannula to navigate the electrode based tissue classification.

Needle, designed to measure the bioimpedance of kidney. Impedance is measured between exposed tip (2) and sheath (1).

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. 1886-9.

[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. 1520-3.

[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. 135-7.

Source [4]

Source [5]

Source [6]

Biomedical Electronics IEM3240 – „Electrodes for Measuring Bioimpedance“

Tallinn, 8. Nov. 2013 4

Microelectrode, made in CMOS technology, for measuring the bioimpedance of single cells.

Microelectrodes A custom made CMOS electrode with active integrated

circuitry in rigid case designed by Plessey Semiconductor for capacitive measurement.

Multi-electrode array sensor chip layout in CMOS technology for neural signal recording.

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. 252-7.[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. 82-5.

Source [7]

Source [8]

Source [9]

Picture from: http://www.radiant.su/eng/news/?action=show&id=249

Biomedical Electronics IEM3240 – „Electrodes for Measuring Bioimpedance“

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The analysis of bovine milk quality by using biological impedance measurements using electrical impedance spectroscopy.

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.

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. 162-7.[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.

Source [10]

Source [11]

Picture from: https://www.bcm.edu/bodycomplab/Images/electrodehand.gif

Biomedical Electronics IEM3240 – „Electrodes for Measuring Bioimpedance“