US Patent 7341756 - Metal/bone integration using hydroxyapatite nanoparticles

http://www.freepatentsonline.com/7341756.html

Medical implants often fail because of failure to integrate artificial components with natural bone. This patent teaches using nanoparticles based on an inorganic mineral found in bone as a fusing agent. Claim 1 reads:

1. A method comprising: chemically charging a surface of a medical or dental implant; and after chemically charging a surface of the implant, forming a layer of crystalline hydroxyapatite nanoparticles on the implant.