Endoprosthesis component
AssigneeDeru GmbH
InventorHelmut D. Link
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Abstract
An endoprosthesis component is formed from a ceramic material and in which the ceramic material is partially coated with a titanium alloy. An uncoated surface portion of the endoprosthesis component is designed to interact as slide surface with another endoprosthesis component. A coated surface portion of the endoprosthesis component is designed to establish a connection to a bone. The part of the ceramic material forming an interface to the coating has a roughness Ra of between 2.5 μM and 7 μM, creating a firm connection between the coating and the ceramic material. The invention further relates to a method for producing such an endoprosthesis component. To achieve the desired roughness of the surface, the ceramic component is presintered at a temperature of between 880° C. and 980° C. and is then treated with a blasting material.
Claims17
An endoprosthesis component which is formed from a ceramic material and in which the ceramic material is partially coated with a titanium alloy, an uncoated surface portion being designed to interact as a slide surface with another prosthesis component, and a coated surface portion being designed for connection to a bone, wherein the part of the ceramic material forming an interface to the coating has a roughness Ra of between 2.5 μm and 7 μm.
Dependencies are inferred from the claim text.