US 8,540,773 B2Granted

Prosthetic facet joint ligament

AssigneeDePuy Synthes Products, Inc.

InventorsAndrew Dooris, Hassan Serhan, Mark Gracia

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Abstract

A facet joint prosthesis for replacing a facet joint comprising superior and inferior facets, the prosthesis comprising: a) a superior facet joint component forming a superior endplate having a superior outer surface adapted to attach to the superior facet and an inner surface, b) an inferior facet joint component forming an inferior endplate having an inferior outer surface adapted to attach to the inferior facet and an inner surface, and c) a ligament adapted to constrain relative movement between the facets, wherein the ligament comprises an elastic core having a superior surface adapted to attach to the inner surface of the superior facet joint component and an inferior surface adapted to attach to the inner surface of the inferior facet joint component.

Claims1

Dependent claims

A method comprising the steps of:

a) implanting in a natural facet joint comprising superior and inferior facets a prosthesis comprising:
i) a superior facet joint component forming a superior endplate having a convex superior outer surface adapted to attach to the superior facet and an inner surface,
ii) an inferior facet joint component forming an inferior endplate having an inferior outer surface adapted to attach to the inferior facet and an inner surface, and
iii) a ligament adapted to constrain relative movement between the facets by stabilizing the facets in both compression and tension,
wherein the ligament comprises an elastic core having a superior surface adapted to attach to the inner surface of the superior facet joint component and an inferior surface adapted to attach to the inner surface of the inferior facet joint component.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 11/459,718Filed 25 Jul 2006 · division
Priority: 31 Dec 2002
Published: US 2006/0259142 A116 Nov 2006
Granted: 24 Sep 2013
Term ends: Not estimatedThe source records don’t support an estimate.

Classification51 codes

A61F 2/4405
For the spine, e.g. vertebrae or spinal discs: for apophyseal or facet joints, i.e. between adjacent spinous or transverse processes
A61F 2/08
Prostheses implantable into the body: muscles; Tendons; Ligaments
A61F 2/30
Prostheses implantable into the body: joints
A61B 17/0401
For suturing wounds; Holders or packages for needles or suture materials: suture anchors, buttons or pledgets, i.e. means for attaching sutures to…

Family

Application10/334,601Parent of this division · filed 31 Dec 2002
US 2006/0259142 A1Pre-grant publication · published 16 Nov 2006
US 7,101,398 B2Parent of this division
US 2004/0127989 A1Published application
US 8,540,773 B2This patent

From the US filing history. Foreign family members aren’t listed.

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