Feasibility of Self-Powering and Energy Harvesting Using Cardiac Valvular Perturbations

Sri Harsha Kondapalli, Yarub Alazzawi, Marcin Malinowski, Tomasz Timek, Shantanu Chakrabartty

Research output: Contribution to journalArticlepeer-review

8 Scopus citations


In this paper, we investigate the feasibility of harvesting energy from cardiac valvular perturbations to self-power a wireless sonomicrometry sensor. Compared to the previous studies involving piezoelectric patches or encasings attached to the cardiac or aortic surface, the proposed study explores the use of piezoelectric sutures that can be implanted in proximity to the valvular regions, where non-linear valvular perturbations could be exploited for self-powering. Using an ovine animal model, the magnitude of valvular perturbations are first measured using an array of sonomicrometry crystals implanted around the tricuspid valve. These measurements were then used to estimate the levels of electrical energy that could be harvested using a simplified piezoelectric suture model. These results were revalidated across seven different animals, before and after valvular regurgitation was induced. Our study shows that power harvested from different annular planes of the tricuspid valve (before and after regurgitation) could range from nano-watts to milli-watts, with the maximum power harvested from the leaflet plane. We believe that these results could be useful for determining optimal surgical placement of wireless and self-powered sonomicrometry sensor, which in turn could be used for investigating the pathophysiology of ischemic regurgitation.

Original languageEnglish
Article number8435999
Pages (from-to)1392-1400
Number of pages9
JournalIEEE Transactions on Biomedical Circuits and Systems
Issue number6
StatePublished - Dec 2018


  • cardiac valvular dynamics
  • energy harvesting
  • M-scan telemetry
  • sonomicrometry
  • Ultrasound


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