US 7,611,538 B2Granted

Intervertebral disk prosthesis

AssigneeZimmer Spine, Inc.

InventorsKarl Belliard, Régis Le Couedic, Jacques Senegas, Paolo Mangione

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Abstract

The invention provides an intervertebral disk prosthesis. The prosthesis comprises: a first fixing element having both an anchoring first face for anchoring in one of the vertebrae and a co-operation second face; a second fixing element having both an anchoring first face for anchoring in the other vertebrae and a co-operation second face; a first prosthesis element having both an active first face and a co-operation second face, said co-operation faces of the first fixing element and of the first prosthesis element serving to fasten the two elements together; a second prosthesis element having both an active first face and a co-operation second face, said co-operation faces of the second fixing element and of the second prosthesis element serving to fasten the two elements together; and each of said active faces of the prosthesis elements defining at least a portion of a spherical cap that is respectively concave or convex.

Claims14

Dependent claims

An intervertebral disk prosthesis suitable for being put into place between two vertebrae by the posterior technique or by the anterior technique, the prosthesis comprising:

a first fixing element having an anchoring first face for anchoring the first fixing element to one of the two vertebrae, and a co-operation second face;
a first prosthesis element having an active first face and a co-operation second face, the co-operation faces of the first fixing element and of the first prosthesis element, respectively, being fixed in opposition to each other such that the first fixing element and the first prosthesis element are fixed to one another in a plane substantially orthogonal to the axis of the vertebrae;
a second fixing element having an anchoring first face for anchoring the second fixing element to in the other of the two vertebrae and a co-operation second face;
and
a second prosthesis element having an active first face and a co-operation second face, the co-operation faces of the second fixing element and of the second prosthesis element, respectively, being fixed in opposition to each other such that the second fixing element and the second prosthesis element are fixed to one another in a plane substantially orthogonal to the axis of the vertebrae;
wherein the active first face of the first prosthesis element and the active first face of the second prosthesis element are disposed in moveable opposition to each other, one of the active first faces being concave and the other of the active first faces being convex so as to define a spherical cap,
wherein the first prosthesis element comprises two distinct parts, each of the two distinct parts comprising the first prosthesis element having respective surfaces arranged so as to collectively define the active first face,
wherein the second prosthesis element comprises two distinct parts, each of the two distinct parts comprising second prosthesis element having respective surfaces arranged so as to collectively define the active second face.

5 more elements

An intevertebral disk prosthesis suitable for being put into place between two vertebrae by the anterior technique or the posterior technique, the prosthesis comprising:

first and second fixing elements;
and
two opposing prosthesis elements, each prosthesis element comprising two distinct parts, each part of each of the two prosthesis elements having a first face for fixing to a respective one of the first or second fixing element and an active second face defining a portion of a spherical cap, wherein the respective active second faces of parts of each prosthesis element are arranged to lie on the same spherical surface when the two prosthesis elements are fixed to respective ones of the two vertebrae;
and
wherein each fixing element comprises an anchoring first face for anchoring to one of the two vertebrae and a co-operation face constructed and arranged to co-operate with the first faces of the two parts forming a respective prosthesis element so as to secure the respective two parts to the fixing element in a place substantially orthogonal to the axis of the vertebrae.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 10/735,603Filed 12 Dec 2003
Priority: FR 03 095964 Aug 2003
Published: US 2005/0033435 A110 Feb 2005
Granted: 3 Nov 2009
Term ends: Not estimatedThe source records don’t support an estimate.

Classification13 codes

A61F 2/4425
Intervertebral or spinal discs, e.g. resilient: made of articulated components
A61F 2002/30383
Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements: made by laterally inserting a protrusion, e.g.…
A61F 2002/30387
Made by laterally inserting a protrusion, e.g. a rib into a complementarily-shaped groove: dovetail connection
A61F 2002/3039
Made by laterally inserting a protrusion, e.g. a rib into a complementarily-shaped groove: with possibility of relative movement of the rib within…