US 8,801,794 B2Granted

Flanged interbody fusion device with fastener insert and retaining ring

AssigneeSpinal Elements, Inc.

InventorJason Blain

Life of this patent

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Abstract

Methods and devices are disclosed for treating the vertebral column. An integrated fixation plate and spacer having a retaining structure within the screw holes of the fixation plate to resist backout of screws attaching the fixation plate to the bone is provided. A movable joint may be provided between the fixation plate and spacer. In some embodiments, a screw hole insert is also provided to resist shear forces acting between the screw and fixation plate. In some embodiments, an integrated fixation plate and spacer system is provided, comprising two or more integrated fixation plate and spacer implants, wherein the fixation plates of each implant has a complementary configuration to allow attachment of the implants at adjacent intervertebral spaces. Alternative fixation systems are also contemplated.

Claims20

Dependent claims

A method for treating a spine, comprising:

providing a first stabilization plate, wherein the first stabilization plate comprises an upper portion, a lower portion, an access surface, a bone facing surface, and the upper portion comprises a first hole between the access surface and the bone facing surface of the first stabilization plate, wherein the first hole comprises a retaining channel,
providing a retaining structure, wherein the retaining structure comprises a retaining ring at least partially located within the retaining channel,
providing an attachment insert, and wherein the attachment insert comprises a hole extending through the attachment insert, the attachment insert having an inner insert diameter and an outer perimeter having an outer insert diameter, wherein at least a part of the outer insert diameter is adjacent to the first hole, and wherein the retaining ring is integral with the attachment insert;
attaching the upper portion of the first stabilization plate to a first vertebra;
and
attaching the lower portion of the first stabilization plate to a second vertebra.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 13/901,327Filed 23 May 2013 · continuation
Priority: 17 Mar 2005
Published: US 2013/0253655 A126 Sep 2013
Granted: 12 Aug 2014
Term ends: Not estimatedThe source records don’t support an estimate.

Classification41 codes

A61B 17/7059
Spinal positioners or stabilisers, e.g. stabilisers comprising fluid filler in an implant: cortical plates
A61B 17/8042
Having indirect contact with screw heads, or having contact with screw heads maintained with the aid of additional components, e.g. nuts, wedges…:…
A61B 17/8047
Having indirect contact with screw heads, or having contact with screw heads maintained with the aid of additional components, e.g. nuts, wedges…:…
A61B 17/86
Fasteners therefor or fasteners being internal fixation devices: pins or screws or threaded wires; nuts therefor

Family

Application60/662,747Us provisional application · filed 17 Mar 2005
Application60/708,918Us provisional application · filed 17 Aug 2005
Application11/374,462Parent of this continuation · filed 13 Mar 2006
US 2013/0253655 A1Pre-grant publication · published 26 Sep 2013
US 8,470,039 B2Parent of this continuation
US 2006/0235518 A1Published application
US 8,801,794 B2This patent

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