Vascular turbine powering a cardiac pacemaker: an in-vivo case study

Jonsson, Magnus; Zurbuchen, Adrian; Haeberlin, Andreas; Pfenniger, Aloïs; Vogel, Rolf (2014). Vascular turbine powering a cardiac pacemaker: an in-vivo case study. Experimental & Clinical Cardiology, 20(1), pp. 2000-2003. Canada: Pulsus

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Background: Today’s medical devices are powered by batteries with a limited energy storage capacity. Depleted batteries have to be replaced, exposing the patients to the risk of adverse events. Thus, a method for harvesting energy inside the body is desirable since it would allow building devices without batteries. Methods: A miniaturized intravascular Tesla turbine was implanted as an arteriovenous shunt between the common carotid artery and external jugular vein of a pig. The harvested energy was used to power a custom-built temporary cardiac pacemaker. Results: At a flow rate of ~150 ml/min, an output power of 0.4 mW was measured. Successful ventricular pacing was performed. Conclusion: Harvesting energy from the circulation using an intravascular turbine is technically feasible and provides enough energy to power a cardiac pacemaker.

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