US 2004/0267364 A1Published application

Disk prosthesis for cervical vertebrae with controlled clearance

AssigneeScient ' x

InventorsOlivier Carli, Mourad Ben-Mokhtar

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Abstract

The purpose of the invention involves a disk prosthesis comprising: a first (2) and a second plate (3) to be fixed on neighbouring cervical vertebrae, and means of articulation (7) inserted between the two plates placed in a superimposed position, comprising: means authorising flexion-extension movements in the sagittal plane (S) according to a limited angular clearance, means authorising lateral inflexion movements in a plane perpendicular to the sagittal plane (S) according to a limited angular clearance, means authorising relative rotation movements between the first (2) and second (3) plates according to a limited angular clearance, means of assembly (17) with the first (2) and second (3) plates so as to form a prosthesis consisting of a single piece.

Claims9

Dependent claims

Disc prosthesis for cervical vertebrae comprising:

a first (2) and a second plate (3) intended to be fixed on neighboring cervical vertebrae,
and means of articulation (7) inserted between the two plates placed in superimposed position, characterized in that the means of articulation (7) comprise:
means authorizing flexion-extension movements in the sagittal plane (S) according to an angular clearance limited by means of stop in flexion-extension (9),
means authorizing lateral inflexion movements in a plane perpendicular to the sagittal plane (S) according to an angular clearance limited by means of stop in lateral inflexion (12),
means authorizing relative rotation movements between the first (2) and second (3) plates according to an angular clearance limited by means of stop in relative rotation,
means of assembly (17) with the first (2) and second (3) plates so as to form a prosthesis consisting of a single piece.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 10/673,165Filed 30 Sep 2003
Priority: FR 030772626 Jun 2003
Published: 30 Dec 2004
Term ends: Not estimatedThe source records don’t support an estimate.

Classification10 codes

A61F 2/4425
Intervertebral or spinal discs, e.g. resilient: made of articulated components
A61F 2002/30331
Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements: made by longitudinally pushing a protrusion…
A61F 2002/30393
Rotation: with additional means for limiting said rotation
A61F 2002/30649
Features concerning the anatomical functioning or articulation of the prosthetic joint: ball-and-socket joints