Flexible bioimpedance spectroscopy system for wound care monitoring

Colm McCaffrey, Jacek Flak, Kaisa Kiri, Pekka Pursula

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

    9 Citations (Scopus)


    This paper presents a system for measuring the bioimpedance of a wound, to give an indication of its healing progress without the need to remove the wound dressing. A 16-channel electrode array is printed on a composite nanocellulose-polyurethane substrate that is stretchable, breathable and biocompatible. An electronic readout system consists of an analogue multiplexor, analogue front end interrogated with an integrated impedance measurement device, and an on-board calibration circuit. The readout electronics is implemented on a polyimide flexible substrate, including additional sensing functions, wireless powering and radio communications easily integrated in various wound dressing scenarios. The electrode array is detachable from the readout allowing numerous application specific electrode patch configurations, and reuse of electronics with disposable, single-use electrode patches. The system is characterized measuring a range of known impedances, for measurements on a gelatine phantom and on a healthy human arm.

    Original languageEnglish
    Title of host publication2019 IEEE Biomedical Circuits and Systems Conference (BioCAS)
    Subtitle of host publicationBioCAS 2019
    PublisherIEEE Institute of Electrical and Electronic Engineers
    Number of pages4
    ISBN (Electronic)978-1-5090-0617-5
    ISBN (Print)978-1-5090-0618-2
    Publication statusPublished - 5 Dec 2019
    MoE publication typeA4 Article in a conference publication
    Event2019 IEEE Biomedical Circuits and Systems Conference, BioCAS 2019 - Nara, Japan
    Duration: 17 Oct 201919 Oct 2019


    Conference2019 IEEE Biomedical Circuits and Systems Conference, BioCAS 2019
    Abbreviated titleBioCAS 2019


    • bioimpedance
    • electrical impedance
    • flexible electronics
    • printed electronics
    • wound care
    • OtaNano


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