The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 24, 2001
Filed:
Jan. 23, 1999
Dr. H. C. Robert Mathys Stiftung, Bettlach, CH;
Abstract
A bioactive surface layer with 0.01 &mgr;m to 5 mm thickness is suitable for a metallic bone implant. The surface layer has the following composition: (A) calcium compounds (CaX) consisting of crystalline calcium phosphate (CaP), calcium apatites (CaAp) and/or calcium carbonate (CaCO,), in a proportion expressed by the following equation: 100% (CaX)=&Sgr;[x % (CaP)+y % (CaCO,)], in which x+y+z=100, 0≦x≦100; 0≦y≦100; 0≦z≦100, and in the form of particles 20 nm to 4 mm; and (B) amorphous or crystalline metal oxide (MeO). The ratio between CAX and MeO in the surface layer can be preferably varied as a result of the specific coating process. The thickness of the surface layer lies between 0.01 &mgr;m and 5 mm and the CaX particles are 20 nm to 4 mm large.