DISC ENDOPROTHESIS

Abstract

Abstract An intervertebral disc endoprothesis comprises two symmetrical, concave end plates with an intermediate convex spacing piece. The end plates and the spacing piece have a plane guide rim. The end plates either have an edge shoulder or an annular groove for a toroid provided on the spacing piece. Alternatively, the intervertebral disc endoprothesis comprises two asymmetric end plates and a spacing piece, however, the two areas of movement are offset by 90 DEG in relation to each other and are partial surfaces of a cylinder. In the third variation, the two symmetrical end plates are convex, the spacing piece is cylindrical as well as concave at the two ends and has a durable cover.

Inventors

• 👤 Karin Dr.med. DDR 1017 Berlin Büttner-Janz
• 👤 Bernd Dipl.-Ing. DDR 1141 Berlin Derr
• 👤 Klaus-Peter Dipl.-Ing. DDR 8020 Dresden Erkel
• 👤 Hans-Joachim Dipl.-Jur. DDR 1144 Berlin Helisch
• 👤 Kurt Dr.sc.med. DDR 1020 Berlin Schellnack
• 👤 Roland Dipl.-Ing. DDR 8027 Dresden Schumann

Bibliographic Details