A Contactless Sensor for Pacemaker Pulse Detection:Design Hints and Performance Assessment


Continuous monitoring of pacemaker activity can provide valuable information to improve patients' follow-up. Concise information is stored in some types of pacemakers, whereas ECG can provide more detailed information, but requires electrodes and cannot be used for continuous monitoring. This study highlights the possibility of a continuous monitoring of pacemaker pulses by sensing magnetic field variations due to the current pulses. This can be achieved by means of a sensor coil positioned near the patient's thorax without any need for physical contact. A simplified model of coil response to pacemaker pulses is presented in this paper, along with circuits suitable for pulse detection. In vitro tests were carried out using real pacemakers immersed in saline solution; experimental data were used to assess the accuracy of the model and to evaluate the sensor performance. It was found that the coil signal amplitude decreases with increasing distance from the pacemaker lead wire. The sensor was able to easily perform pacemaker spike detection up to a distance of 12 cm from the pacemaker leads. The stimulation rate can be measured in real time with high accuracy. Since any electromagnetic pulse triggers the same coil response, EMI may corrupt sensor measurements and thus should be discriminated.

Publication DOI: https://doi.org/10.3390/s18082715
Divisions: College of Health & Life Sciences > School of Optometry > Optometry & Vision Science Research Group (OVSRG)
College of Health & Life Sciences
Additional Information: © 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/)
Uncontrolled Keywords: pacemaker pulse,coil sensor,pacing monitor,personal healthcare device,pervasive patient monitoring
Publication ISSN: 1424-8220
Full Text Link:
Related URLs: http://www.mdpi ... -8220/18/8/2715 (Publisher URL)
PURE Output Type: Article
Published Date: 2018-08-18
Accepted Date: 2018-08-15
Authors: Andreozzi, Emilio
Gargiulo, Gaetano D
Fratini, Antonio (ORCID Profile 0000-0001-8894-461X)
Esposito, Daniele
Bifulco, Paolo



Version: Published Version

License: Creative Commons Attribution

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