US 7,320,798 B2
Coatings, coated articles and methods of manufacture thereof
Zongtao Zhang, Unionville, Conn. (US); and Tongsan D. Xiao, Willington, Conn. (US)
Assigned to Inframat Corporation, Farmington, Conn. (US)
Filed on May 05, 2006, as Appl. No. 11/418,626.
Application 11/418626 is a division of application No. 10/270092, filed on Oct. 14, 2002, granted, now 7,157,096.
Claims priority of provisional application 60/328742, filed on Oct. 12, 2001.
Prior Publication US 2006/0204541 A1, Sep. 14, 2006
Int. Cl. A61F 13/00 (2006.01)
U.S. Cl. 424—422 20 Claims
 
1. A coating for an implant, comprising:
a first layer disposed on the implant and having a first thermal expansion coefficient and comprising a material selected from the group consisting of nitride compounds, boride compounds, carbide compounds, and mixtures of two or more of the foregoing materials; and
a second layer disposed on the first layer having a second thermal expansion coefficient and comprising an apatite having greater than about 90% crystallinity and a binder that is inert in body fluids, wherein the first and second thermal expansion coefficients have a difference of less than or equal to about 1×10−6/° C.