US 11,304,728 B2 · Integrated multipoint fixation screw

Abstract

Bone anchor assemblies and related methods are disclosed herein that can provide for improved fixation of a primary bone anchor. A bone anchor assembly can include a base rotatably received within a rod-receiving member. The base can have a toroid body with a radially-extending portion including at least one auxiliary bone anchor opening that can receive an auxiliary bone anchor to augment fixation of a primary bone anchor of the bone anchor assembly. The base can be rotated relative to the rod-receiving member and the primary bone anchor such that the at least one auxiliary bone anchor opening can be placed in a desired position for supplemental fixation.

Claims15

Dependent claims

A bone anchor assembly, comprising:

a base having a toroid body portion and a radially-extending portion including at least one auxiliary bone anchor opening configured to receive an auxiliary bone anchor, the base comprising an extension extending proximally from the toroid body portion;
a receiver member having a proximal end, a distal end, with a lumen extending therebetween, and a rod-receiving recess;
and
a shank having a head portion retained within the toroid body portion and a bone engaging portion that extends distally from the base;
wherein the base is coupled to the receiver member such that the base is configured to rotate relative to the receiver member, and
wherein the extension is received within the lumen of the receiver member.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application

17/174,456Filed 12 Feb 2021 · us provisional application

Priority

14 Feb 2020

Published

US 2021/0251662 A119 Aug 2021

Granted

19 Apr 2022

Term ends

Not estimatedThe source records don’t support an estimate.

Classification9 codes

A61B 17/70
Internal fixation devices , including fasteners and spinal fixators, even if a part thereof projects from the skin: spinal positioners or…
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 17/7037
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 17/7044
Screws or hooks combined with longitudinal elements which do not contact vertebrae: also having plates, staples or washers bearing on the vertebrae

Integrated multipoint fixation screw

Life of this patent

Integrated multipoint fixation screw

Life of this patent

Abstract

Claims15