Fulltext

Energy Harvesting from the Beating Heart by a Mass Imbalance Oscillation Generator

Zurbuchen, A. ; Pfenniger, A. ; Stahel, A. ; Stoeck, C. ; Vandenberghe, S. ; Koch, V. ; Vogel, Rolf

In: Annals of Biomedical Engineering, 2013, vol. 41, no. 1, p. 131-141

Aggiungi alla tua lista
    Titre
    • Energy Harvesting from the Beating Heart by a Mass Imbalance Oscillation Generator
    Auteur
    • Zurbuchen, A.. ARTORG Center for Biomedical Engineering Research, University of Bern, 3010, Bern, Switzerland
    • Pfenniger, A.. ARTORG Center for Biomedical Engineering Research, University of Bern, 3010, Bern, Switzerland
    • Stahel, A.. Engineering and Information Technology, Bern University of Applied Sciences, 2501, Biel, Switzerland
    • Stoeck, C.. Institute for Biomedical Engineering, University and ETH Zurich, 8092, Zurich, Switzerland
    • Vandenberghe, S.. ARTORG Center for Biomedical Engineering Research, University of Bern, 3010, Bern, Switzerland
    • Koch, V.. Engineering and Information Technology, Bern University of Applied Sciences, 2501, Biel, Switzerland
    • Vogel, Rolf. ARTORG Center for Biomedical Engineering Research, University of Bern, 3010, Bern, Switzerland
    Type de document
    • Postprint
    Langue
    • Inglese
    Publié dans
    • Annals of Biomedical Engineering, 2013, vol. 41, no. 1, p. 131-141. Springer US; http://www.springer-ny.com
    Autre version électronique
    Identifiant OAI-PMH
    • oai:doc.rero.ch:315432
    Summary
    Energy-harvesting devices attract wide interest as power supplies of today's medical implants. Their long lifetime will spare patients from repeated surgical interventions. They also offer the opportunity to further miniaturize existing implants such as pacemakers, defibrillators or recorders of bio signals. A mass imbalance oscillation generator, which consists of a clockwork from a commercially available automatic wrist watch, was used as energy harvesting device to convert the kinetic energy from the cardiac wall motion to electrical energy. An MRI-based motion analysis of the left ventricle revealed basal regions to be energetically most favorable for the rotating unbalance of our harvester. A mathematical model was developed as a tool for optimizing the device's configuration. The model was validated by an in vitro experiment where an arm robot accelerated the harvesting device by reproducing the cardiac motion. Furthermore, in an in vivo experiment, the device was affixed onto a sheep heart for 1h. The generated power in both experiments—in vitro (30μW) and in vivo (16.7μW)—is sufficient to power modern pacemakers