Intervertebral prosthetic disc

US9439774B2 · kind B2 · utility

Assignee

• Simplify Medical Pty Ltd · AU

Inventors

• Malan de Villiers · Randburg, ZA
• Ulrich Hahnle · Rosebank, ZA

Key dates

• Filing date: Jan 7, 2011
• Grant date: Sep 13, 2016
• Expiry date: May 17, 2034

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61F2310/0088
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A prosthetic disc for insertion between adjacent vertebrae includes upper and lower plates, a core disposed between the plates, and at least one projection extending from at least one of the upper and lower curved surfaces of the core into at least one recess of one of the inner surfaces of the plates. The recess is oversize with respect to the projection to allow sliding movement of the plate over the core while retaining the core between the plates during such sliding movement. The projection(s) may include a rod extending through an axial hole in the core, multiple surface features of the core, or the like.