Intervertebral implant

US7585325B2 · kind B2 · utility

Assignee

• Aesculap AG · DE

Inventors

• Susanne Schneid · Tuttlingen, DE
• Robert J. Schultz · Farmington, US

Key dates

• Filing date: Jun 15, 2005
• Grant date: Sep 8, 2009
• Expiry date: Jul 25, 2026

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61F2220/0033
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

In an intervertebral implant with a top contacting element, a bottom contacting element and arranged between these a core which with an upper, spherical bearing surface engages a spherical bearing socket, having the same radius, of the top contacting element and with a lower, spherical bearing surface engages a spherical bearing socket, having the same radius, of the bottom contacting element, in order to improve the kinematics and the endurance, it is proposed that the radius of the bearing surface and of the bearing socket receiving it differ on opposing sides of the core at least by the factor 5.