title: Inductive Powering of Subcutaneous Stimulators: Key Parameters and Their Impact on the Design Methodology.
abstract: Inductive powering of implantable medical devices involves numerous factors acting on the system efficiency and safety in adversarial ways. This paper lightens up their role and identifies a procedure enabling the system design. The latter enables the problem to be decoupled into four principal steps: the frequency choice, the magnetic link optimization, the secondary circuit and then finally the primary circuit designs. The methodology has been tested for the powering system of a device requirering a power of 300mW and implanted at a distance of 15 to 30mm from the outside power source. It allowed the identification of the most critical parameters. A satisfying efficiency of 34% was reached at 21mm and tend to validate the proposed design procedure.
authors.affiliation: Synergia Medical, Mont-Saint-Guibert, Belgium; Université Libre de Bruxelles, Belgium.
authors.forename: Carmen
authors.initials: C
authors.lastname: Godfraind
authors.affiliation: Université Libre de Bruxelles , Belgium.
authors.forename: Adrien
authors.initials: A
authors.lastname: Debelle
authors.affiliation: Université Libre de Bruxelles , Belgium.
authors.forename: Laurent
authors.initials: L
authors.lastname: Lonys
authors.affiliation: Université Libre de Bruxelles , Belgium.
authors.forename: Vicente
authors.initials: V
authors.lastname: Acuña
authors.affiliation: Synergia Medical, Mont-Saint-Guibert , Belgium.
authors.forename: Pascal
authors.initials: P
authors.lastname: Doguet
authors.affiliation: Université Libre de Bruxelles , Belgium.
authors.forename: Antoine
authors.initials: A
authors.lastname: Nonclercq
keywords: design methodology; efficiency optimisation; implanted neurostimulators; inductive powering