Depuy Synthes Products, Inc.

Depuy Snythes Products, Inc.

Derek Shaw

Michael J O'Neil

Alexander D Grinberg

John C Voellmicke

Douglas Raymond

Jonathan Bellas

Nicholas Pavento

Frank Spratt

Sara Dziedzic

Thibault Chandanson

Ernest Quintanilha

Philip A Cormier

Hassan A Serhan

Shawn D Stad

Thomas J Gamache

Michael C Gorhan

Andrew Dooris

Jonathan Howe

Tony Tannoury

Kevin Flaherty

Joseph M Childs

Michael J O'NEIL

A method of delivering a fusion cage to an intervertebral disc space bounded by adjacent vertebral endplates, comprising the step of delivering the fusion cage into the disc space without contacting its teeth to the vertebral endplates during delivery, wherein a sheath is interposed between a cage surface and the endplates to prevent contact therebetween during delivery.

Enhanced cage insertion assembly

An angled fixation device, such as an angled screw. This angled fixation device may be used by the surgeon to secure a spacer to a spinal disc space. The proximal end portion of the angled fixation device is driven perpendicular to the anterior wall of the spacer, and so is parallel to the vertebral endplates and in-line with the inserter. The distal end portion of the angled fixation device is oriented at about a 45 degree angle (plus or minus 30 degrees) to the vertebral endplate it enters.

Stand alone intervertebral fusion device

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

The present invention concerns several fusion devices and methods for laterally inserting a fusion device at an initial trajectory that is not parallel to the disc space. Each fusion device incorporates components that enable flexing, bending or pivoting of the device during its final approach to the prepared disc space.

Multi-segment lateral cages adapted to flex substantially in the coronal plane

An intervertebral fusion device comprising inferior and superior fusion cage devices that provide an ability to correct spondylolisthesis via in-situ adjustment.

Lateral spondylolisthesis reduction cage and instruments and methods for non-parallel disc space preparation

An inserter instrument for inserting an intervertebral fusion cage having curved sidewalls, comprising:

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 polyaxially seats a spherical head of the bone anchor, and a compression member seated within the receiver member, proximally of the head of the bone anchor. The compression member can have a distal end with gripping features thereon configured to create at least one line contact and/or one band contact with the head of the bone anchor, thus providing a firm grip on the head of the bone anchor and reducing a risk of slippage of the bone anchor with respect to the receiver member.

Multi-segment lateral cage adapted to flex substantially in the coronal plane

A self-retaining neural retraction clip, preferably having controlled retraction level and an off-set retraction means. This device can reduce operative site clutter to enhance disc access while providing consistent and stable dural retraction.

Neural tissue retraction and preservation device

Flexible shavers and curved access ports that reduce access and trajectory problems associated with conventional lateral approaches to the lower spine. These devices and methods allow for preparing a disc space in the lower spine at an angle that is parallel to the disc space. Consequently, these devices and methods allow for preparing with less endplate damage.

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North Attleboro, MA, United States of America

Derek Shaw