Artificial joint of a prosthesis

US6387132B1 · kind B1 · utility

Assignee

• Ceramtec AG, Innovative Ceramic Engineering · DE

Inventors

• Werner Deppisch · Berchtesgaden, DE
• Hans-Georg Pfaff · Esslingen am Neckar, DE
• Gerd Willmann · Niedernhausen, DE

Key dates

• Filing date: Jul 28, 2000
• Grant date: May 14, 2002
• Expiry date: Jul 28, 2020

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61F2310/00239
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

Prostheses with artificial joints have only a few metallic and ceramic materials whose compatibility with human or animal tissue has been established. These materials, however, cannot be combined with one another in any manner if a friction pairing occurs as a result, for example, in the case of artificial joints. With artificial joints, joint partners are required to have good mechanical properties as well as tribological properties. According to the invention, a sintered material is thus provided which is comprised of zircon oxide with an addition of 0.1 to 40 wt. % aluminum oxide. This sintered material enables an artificial joint of a prosthesis whose other ceramic materials are comprised of aluminum oxide or zircon oxide with the given proportions of aluminum oxide to be assembled with joint partners.