Energy harvesting through arterial wall deformation: design considerations for a magneto-hydrodynamic generator

Pfenniger, Aloïs; Obrist, Dominik; Stahel, Andreas; Koch, Volker M.; Vogel, Rolf (2013). Energy harvesting through arterial wall deformation: design considerations for a magneto-hydrodynamic generator. Medical & biological engineering & computing, 51(7), pp. 741-755. Springer-Verlag 10.1007/s11517-012-0989-2

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As the complexity of active medical implants increases, the task of embedding a life-long power supply at the time of implantation becomes more challenging. A periodic renewal of the energy source is often required. Human energy harvesting is, therefore, seen as a possible remedy. In this paper, we present a novel idea to harvest energy from the pressure-driven deformation of an artery by the principle of magneto-hydrodynamics. The generator relies on a highly electrically conductive fluid accelerated perpendicularly to a magnetic field by means of an efficient lever arm mechanism. An artery with 10 mm inner diameter is chosen as a potential implantation site and its ability to drive the generator is established. Three analytical models are proposed to investigate the relevant design parameters and to determine the existence of an optimal configuration. The predicted output power reaches 65 μW according to the first two models and 135 μW according to the third model. It is found that the generator, designed as a circular structure encompassing the artery, should not exceed a total volume of 3 cm3.

Item Type:

Journal Article (Original Article)

Division/Institute:

10 Strategic Research Centers > ARTORG Center for Biomedical Engineering Research > ARTORG Center - Cardiovascular Engineering (CVE)

UniBE Contributor:

Pfenniger, Aloïs; Obrist, Dominik and Vogel, Rolf

Subjects:

600 Technology > 610 Medicine & health

ISSN:

0140-0118

Publisher:

Springer-Verlag

Language:

English

Submitter:

Francesco Clavica

Date Deposited:

09 Apr 2014 22:00

Last Modified:

24 Oct 2019 22:42

Publisher DOI:

10.1007/s11517-012-0989-2

BORIS DOI:

10.7892/boris.47969

URI:

https://boris.unibe.ch/id/eprint/47969

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