title: Noninvasive induction implant heating: an approach for contactless altering of mechanical properties of shape memory implants.
abstract: This article shows an approach to change the properties of an orthopaedic shape memory implant within biological tissue, using contactless induction heating. Due to inducing the one way-memory effect, triggered by the rise of temperature within the implant, the geometry and hence the mechanical properties of the implant itself, are altered. The power uptake of the implant, depending on the induction parameters as well as on its position within the induction coil, is shown. Thermographic measurements are carried out in order to determine the surface temperature distribution of the implant. In order to simulate biological tissue, the implant was embedded in agarose gel. Suitable heating parameters, in terms of a short heating process in combination with a reduced heat impact on the surrounding environment, were determined.
authors.affiliation: Laser Zentrum Hannover e.V., Hollerithallee 8, 30419 Hannover, Germany. r.pfeifer@lzh.de
authors.forename: Ronny
authors.initials: R
authors.lastname: Pfeifer
authors.forename: Michael
authors.initials: M
authors.lastname: Hustedt
authors.forename: Volker
authors.initials: V
authors.lastname: Wesling
authors.forename: Christoph
authors.initials: C
authors.lastname: Hurschler
authors.forename: Gavin
authors.initials: G
authors.lastname: Olender
authors.forename: Martin
authors.initials: M
authors.lastname: Mach
authors.forename: Thomas
authors.initials: T
authors.lastname: Gösling
authors.forename: Christian W
authors.initials: CW
authors.lastname: Müller
mesh_terms: D000497:Alloys; D040761:Biomimetic Materials / Q000737:chemistry; D019245:Compressive Strength; D006358:Hot Temperature; D055595:Mechanical Phenomena; D019736:Prostheses and Implants; D012685:Sepharose / Q000737:chemistry; D013499:Surface Properties
chemical_list: D000497:Alloys; D012685:Sepharose