Depuy Synthes Products, Inc.

Medos International Sarl

Johnson & Johnson Professional, Inc.

Depuy Spine, Inc.

Ernest Quintanilha

Frank Spratt

Thibault Chandanson

Philip A Cormier

John Riley Hawkins

Hassan A Serhan

Christopher L Ramsay

Alexander D Grinberg

Edward B Zalenski

William C Horton

Nicholas Pavento

Sara Dziedzic

Richard W Fournier

Derek Shaw

Shawn D Stad

Michael Michielli

Holly Brideau

Ralf Klabunde

Sarah Anne Wildgoose

Joseph T Stalaboin

Dennis P Colleran

Diana F McCue

Timothy M Flynn

Thomas Luckman

Diane F McCue

Holly R Brideau

Joseph T Iv Stalaboin

Michael Carl Michielli

Various exemplary methods and devices are provided for fixing bone anchors to bone. In general, the methods and devices can allow for a bone anchor to be fixed to a bone at a desired angle to a surface of the bone. In an exemplary embodiment, a bone anchor assembly is provided that includes a bone anchor configured to engage bone, a receiver member for seating a head of the bone anchor, and a compression member for securing the bone anchor at fixed angle with respect to the receiver member when the compression member is seated within the receiver member. Corresponding engagement features of the compression member and the receiver member can be engaged in a secured configuration to inhibit or prevent removal of the compression cap from the receiver member and optionally to substantially prevent longitudinal and/or rotational movement of the compression member with respect to the receiver member.

Locking compression members for use with bone anchor assemblies and methods

A novel posterolateral inter-muscular approach has been developed to access the cervical. spine. The approach includes elevating the splenius capitis and trapezios muscles dorsally to create a window for deep spine access, wherein the window comprises: Preferably, a device such as an implant or an instrument is then passed through the window to manipulate the spine.

Method and devices for a sub-splenius/supra-levator scapulae surgical access technique

A novel posterolateral inter-muscular approach has been developed to access the cervical spine. The approach includes elevating the splenius capitis and trapezius muscles dorsally to create a window for deep spine access, wherein the window comprises: Preferably, a device such as an implant or an instrument is then passed through the window to manipulate the spine.

Various exemplary methods and devices are provided for fixing bone anchors to bone. In general, the methods and devices can allow for a bone anchor to be fixed to a bone at a desired angle to a receiver member. In an exemplary embodiment, a bone anchor assembly is provided that includes a bone anchor configured to engage bone, a receiver member that seats a spherical head of the bone anchor and a spinal fixation element, a compression member seated within the receiver member, proximally of the head of the bone anchor, and a closure mechanism seated within the receiver member, proximally of the compression member. One or more of the receiver member, the compression member, and the closure mechanism can have gripping features thereon configured to secure the bone anchor and/or the spinal fixation element within the receiver member, thereby reducing a risk of slippage of the bone anchor and/or the spinal fixation element with respect to the receiver member.

Bone anchor assemblies and methods with improved locking

A novel posterolateral inter-muscular approach has been developed to access the cervical spine. The approach includes elevating the splenius capitis and trapezios muscles dorsally to create a window for deep spine access, wherein the window comprises: Preferably, a device such as an implant or an instrument is then passed through the window to manipulate the spine.

A bone anchor assembly includes a bone anchor, a receiver member for receiving a spinal fixation element to be coupled to the bone anchor, a compression member positioned within the receiver member, and a closure mechanism including an outer set screw and an inner set screw. The outer set screw delivers a distal force to the compression member to fix the bone anchor relative to the receiver member. The proximal surface of the compression member has a shape configured to restrict deformation of the compression member arms including motion of the compression member arms relative to each other. The distal surface of the outer set screw has a shape that is complementary to the shape of the proximal surface of the compression member.

Bone anchor assemblies

Bone anchor assemblies and methods are provided having a multi-component bone anchor that is configured to allow the shank of the bone anchor to be bottom loaded into a receiver member. In one embodiment, a bone anchor assembly is provided having a shank with a distal threaded portion and a proximal head portion, a ball having a spherical exterior surface and a central lumen sized to receive the head portion of the shank, and a clip configured to be engaged between the head portion and the ball such that the clip is effective to lock the ball in engagement with the shank.

Bottom-loading bone anchor assemblies and methods

Growing community of inventors

Norton, MA, United States of America

Ernest Quintanilha