US 8,298,268 B2Granted

Mono-planar pedicle screw method, system and kit

AssigneeTrinty Orthopedics, LLC.

InventorsJames Marino, Jamil Elbanna

Life of this patent

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Abstract

A pedicle screw assembly (10) that includes a cannulated pedicle screw (20) having a scalloped shank (24), a swivel top head 30 having inclined female threads (44) in a left and right arm (34, 36) to prevent splaying, a set screw (50) having mating male threads 52, a rod conforming washer (60) that is rotatably coupled to the set screw (50), the conforming washer including reduced ends to induce a coupled rod (80) to bend. A rod reduction system including an inner and an outer cannula (90, 100), the inner cannula (90) including a left and right arm (92, 94) that engage the swivel top head's (30) left and right arm (34, 36) and the outer cannula (100) dimensioned to securely slide over the inner cannula (90) to reduce the rod (80) into the swivel top head's (30) rod receiving area (38).

Claims20

Dependent claims

A bone anchor assembly, the assembly comprising:

a screw having a shaft extending from a proximal end to a distal end and a plurality of threads on at least a portion of the shaft;
and
a receiving element comprising:
a rod-receiving section having a left arm and a right arm extending proximally forming a first channel configured to receive a rod therethrough, wherein the first channel has a first channel plane aligned with a longitudinal axis of the rod extending through the first channel;
and
a screw-receiving section having a first arm and a second arm extending distally forming a second channel configured to receive the screw, wherein the second channel has a second channel plane offset from the first channel plane, and
wherein the screw is adapted to articulate relative to the receiving element along the second channel plane and is prevented from articulating relative to the receiving element along the first channel plane.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 12/848,027Filed 30 Jul 2010 · continuation
Priority: 27 Apr 2005
Published: US 2010/0298890 A125 Nov 2010
Granted: 30 Oct 2012
Term ends: Not estimatedThe source records don’t support an estimate.

Classification5 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…
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 17/7038
Screws or hooks, wherein a rod-clamping part and a bone-anchoring part can pivot relative to each other: to a different extent in different…
A61B 17/864
Pins or screws or threaded wires; nuts therefor: hollow, e.g. with socket or cannulated

Family

Application60/675,742Us provisional application · filed 27 Apr 2005
PCT/US2006/016042Parent of this continuation · filed 27 Apr 2006
US 2010/0298890 A1Pre-grant publication · published 25 Nov 2010
Application11/916,277Parent of this continuation
US 7,780,706 B2Parent of this continuation
US 2008/0234759 A1Published application
US 8,298,268 B2This patent

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