An ear ossicle prosthesis for sound transmission in a middle tube comprises a post composed of a gold and having two ends and a coupling body composed of pure titanium and coupled with at least one of the ends of the pure gold post....http://www.google.de/patents/US5514177?utm_source=gb-gplus-sharePatent US5514177 - Ear ossicle prosthesis for sound transmission in needle tube, with a post composed of pure gold
