ACCIS

Physical Vapor DEposition The ACCIS® prosthetic components are manufactured from hi-carbon cobalt-chrome-molybdenum alloy according to the ISO standard 5832-4. The components are casted, cooled and then undergo a heat treatment. During the heat treatment block-carbides, which are found at the metal surfaces of the components and may cause abrasive wear in metal-on-metal prostheses, are reduced in number and size. After heat treatment the surfaces are polished. The next step in manufacturing is a very important one: surface micro finish. After this treatment the components are completely smooth, any remaining asperities are at nanometer level. At this point the surfaces of the ACCIS® prosthesis undergo another treatment: surface engineering using the ceramic Titanium-Niobium-Nitride. The TiNbN is integrated into the metal surfaces by physical vapor deposition (PVD* ). The value of PVD technology lies in its ability to modify the surface properties of a device without changing the underlying material properties and biomechanical functionality. In addition to enhanced wear resistance, PVD coatings reduce friction, are compatible with sterilization processes and improve corrosion resistance.

Accis components are manufactured by Implantcast GmbH in Buxtehude Germany and the PVD coating is performed by DOT of Rostock Germany

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(*) Physical vapor deposition (PVD) is a variety of vacuum deposition and is a general term used to describe any of a variety of methods to deposit thin films by the condensation of a vaporized form of the material onto various surfaces (e.g., onto semiconductor wafers). The coating method involves purely physical processes such as high temperature vacuum evaporation or plasma sputter bombardment rather than involving a chemical reaction at the surface to be coated as in chemical vapor deposition. The term physical vapor deposition appears originally in the 1966 book “Vapor Deposition by CF Powell, JH Oxley and JM Blocher Jr, but Michael Faraday was using PVD to deposit coatings as far back as 1838. source

Meet the clinical investigators

Many esteemed surgeons have been involved in the development of the products and its instrumentation and contributed to the clinical investigations
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