Prosthetic devices and related medical system capable of deep prosthetic disinfection and pain control

摘要

A prosthetic or implantable device comprises a susceptor material c, such as ferromagnetic or superparamagnetic nanoparticles, which can be heated upon targeted application of a variable electromagnetic field. The heated susceptor material c may function to prevent or reduce infections either on or in the proximity of the device caused by a bio-film of sessile bacteria. The susceptor material c is preferably sandwiched in a three layer structure which coats the device, having a dielectric layer b proximal to the device surface and an external protective coating d formed by anodic oxidation. The layer of susceptor material may have a variable thickness or discontinuities in the form of a specific pattern to optimise heat delivery and distribution. Also disclosed is a biocompatible cement g with ferromagnetic or superparamagnetic nanoparticles dispersed in the cement g, and a variable frequency power generator (fig 1b,c) connected to a coil (fig 1e) or antenna (fig 1f) for targeting radiation at the device or cement.