Noninvasive induction implant heating: an approach for contactless altering of mechanical properties of shape memory implants

Med Eng Phys. 2013 Jan;35(1):54-62. doi: 10.1016/j.medengphy.2012.03.010. Epub 2012 Apr 14.

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.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Alloys
  • Biomimetic Materials / chemistry
  • Compressive Strength
  • Hot Temperature*
  • Mechanical Phenomena*
  • Prostheses and Implants*
  • Sepharose / chemistry
  • Surface Properties

Substances

  • Alloys
  • Sepharose