Ceramic disc prosthesis

US8021428B2 · kind B2 · utility

Assignee

• DePuy Spine, Inc. · US

Inventors

• Charles M. Bartish, Jr. · Providence, US
• Jeffrey P. Brousseau · Barrington, US
• Patrick Fatyol · New Bedford, US
• Conor McCrea · Brookline, US
• Michael J. O'Neil · West Barnstable, US
• Stephen Connolly · Sharon, US

Key dates

• Filing date: May 25, 2005
• Grant date: Sep 20, 2011
• Expiry date: Oct 19, 2028

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61F2310/00796
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A prosthetic is provided for replacing a vertebral disc. The prosthesis can comprise first and second endplates formed of a ceramic material, each including an articulating contact surface and a bone facing surface. The contact surface of the first endplate can have a shape complementary to the contact surface of the second endplate, thereby facilitating articulation of the first and second endplates while in contact with one another. The device can further include at least one non-ceramic bone attachment element mated with at least one of the bone facing surfaces, such that the bone attachment element covers less than a full area of the bone facing surface.