Process for producing a bone replacement material

US5133756A · kind A · utility

Assignee

• MERCK PATENT GESELLSCHAFT MIT BESHRANK TER HAFTUNG · DE

Inventors

• Gerd Bauer · Kleinostheim, DE
• Freimut Vizethum · Mannheim, DE

Key dates

• Filing date: Feb 20, 1990
• Grant date: Jul 28, 1992
• Expiry date: Feb 20, 2010

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S623/919
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

According to a process for producing a bone replacement material, natural bones are used as raw material, the soft parts of the bones are removed, as well as any residual organic substances, and the remaining osseous substance is finally sintered at temperatures between 1100 degrees and 1500 degrees Celcius. In order to simplify such a process and to ensure a more gentle processing of the inorganic bone matrix, the bones are dried at an increased temperature, maximum 550 degrees Celcius, with a reduced air supply or in a reducing atmosphere, then the temperature of the bones is increased during the following step up to 750 degrees to 800 degrees Celcius, with an increased air supply, and finally the bones are sintered.