Biocompatible titanium alloys
AssigneeLa Jolla Bioengineering Institute
InventorsRamiro Contreras, Herman Sahlin, John A. Frangos
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Abstract
Methods and compositions are disclosed for coating a biocompatible medical implant with a surface layer having antioxidant activity. In various embodiments, a surface layer described herein destroys the oxidative activity of a reactive oxygen species (ROS) upon contact. An ROS can be, for example, an ROS generated by neutrophils in vivo. In various embodiments, a surface layer comprises a titanium oxide layer that can comprise a rutile, an anatase or a perovskite crystal structure, and can include defects comprising Ti(III). In some embodiments, the oxide layer can further comprise a dopant such as niobium. In some embodiments, methods for forming a surface layer on a biocompatible medical implant having antioxidant activity are disclosed.
Claims7
An implant comprising a biocompatible material comprising two or more layers where one layer is provided at a surface of the implant and comprising a crystalline titanium oxide having defects comprising Ti(III) comprises of a titanium alloy selected from the group consisting of SrTiO.sub.3 and BaTiO.sub.3.
Dependencies are inferred from the claim text.