Osteosynthesis with nano-silver

US8652645B2 · kind B2 · utility

Assignee

• AAP BIOMATERIALS GMBH · DE

Inventors

• Elvira Dingeldein · Darmstadt, DE
• Cyrille Gasqueres · Aschaffenburg, DE
• Frank Witte · Berlin, DE
• Amir Eliezer · Omer, IL

Key dates

• Filing date: Jun 2, 2010
• Grant date: Feb 18, 2014
• Expiry date: Dec 30, 2031

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/1259
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

The present invention relates generally to an antibacterial coating which is composed of silver, to medical tools and to implants comprising such a coating and to a method as well to an apparatus for the production of such a coating. The medical tools or the dental or orthopaedic implant comprises a metal or metal alloy having a treated surface wherein the treated surface is at least partially converted to an oxide film by plasma electrolytic oxidation using a colloid-dispersed system and wherein the converted surface is partially covered by islands formed by colloid-dispersed silver-particles of the colloid-dispersed system. An Ag—TiO2 coating shows excellent properties in terms of antibacterial efficacy (even against multi-resistant strains), adhesion and biocompatibility. The life-time of an implant in a human body is increased. The antibacterial coating can be used in the field of traumatology, orthopaedic, osteosynthesis and/or endoprothesis, especially where high infection risk exists.