US 8,894,692 B2Granted

Pedicle screw assembly and methods therefor

AssigneeStryker France

InventorsGreg Martin, Yves Stephane Crozet, William J. Kelly

Life of this patent

Estimating the term…

Loading patent…

Abstract

A method for stabilizing a spine includes providing a coupling element having upper and lower ends, a rod receiving opening adapted to receive an elongated stabilizing rod, a bore extending through the lower end and a seat surrounding the bore adjacent the lower end; providing a fastener having upper and lower ends, a head having a radial surface, and at least one anchoring element between the lower end of the fastener and the head; assembling the fastener with the coupling element; anchoring the fastener to bone; moving the coupling element relative to the fastener for capturing the elongated stabilizing rod in the rod receiving opening; and urging the captured stabilizing rod toward the head of the fastener so that the rod contacts the head and forces the radial surface of the head against the seat.

Claims20

Dependent claims

A stabilizing assembly comprising:

a fastener having
an upper end and a lower end,
a head at the upper end, said head including a center and
at least a portion of said head having a radius of curvature from the center of the head, and
at least one anchoring element between the upper and lower ends thereof;
and
a coupling element having
an outer surface, an interior wall having a diameter, an upper end and a lower end,
a rod receiving opening adapted to receive a stabilizing rod,
a bore extending through the lower end for receiving said fastener,
a cavity adjacent to said lower end,
a seat, and
an annular lip located between the upper end of said coupling element and the seat of said coupling element wherein said annular lip has a diameter less than the diameter of said interior wall and a diameter of an adjacent portion of said cavity,
wherein the portion of said head having the radius of curvature is engagable with the seat when said fastener is positioned in the bore, and wherein the stabilizing rod contacts said head so that the stabilizing rod forces the portion of said head against the seat of said coupling element.

11 more elements

Dependencies are inferred from the claim text.

Facts

Application: 13/243,322Filed 23 Sep 2011 · continuation
Priority: 5 Jan 2001
Published: US 2012/0071932 A122 Mar 2012
Granted: 25 Nov 2014
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

A61B 17/7037
Screws or hooks, wherein a rod-clamping part and a bone-anchoring part can pivot relative to each other: wherein pivoting is blocked when the rod…
G06Q 10/107
Office automation; Time management: computer-aided management of electronic mailing [e-mailing]
A61B 17/7032
Screws or hooks combined with longitudinal elements which do not contact vertebrae: screws or hooks with U-shaped head or back through which…
A61B 17/7082
For driving, positioning or assembling spinal clamps or bone anchors specially adapted for spinal fixation: for driving, i.e. rotating, screws or…

Family

Application09/755,846Parent of this continuation · filed 5 Jan 2001
Application10/197,092Reissue · filed 17 Jul 2002
US 6,488,681 B2Parent of this continuation · filed 3 Dec 2002
US 6,858,030 B2Reissue · filed 22 Feb 2005
Application11/303,091Parent of this continuation · filed 15 Dec 2005
US 2012/0071932 A1Pre-grant publication · published 22 Mar 2012
US RE42,932 E1Parent of this continuation
Application11/303,091Reissue
Application10/197,092Parent of this continuation
US 2002/0091386 A1Published application
US 2002/0183748 A1Published application
US 8,894,692 B2This patent

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