Amendia, Inc.

Michael Glatzer

Jeffrey Scott Radcliffe

Reginald Antonio Terrell

Mark Wilson Jacob

Dale Whipple

William Carlton Tally

Challis Avery King

Bruce Hooper

Wells Yang

An improved spinal fusion system () for positioning between a first and second vertebral body, the system () has a body (), a pair of polyaxial fasteners () and a locking bridge (). The distal end has a slotted opening () extending through the body () and forming a gap extending between the two or more bore holes () to form a deflectable bridge () spanning the bore holes (). The bridge () has a center opening () for receiving a set screw () passing through the bridge () into a threaded opening () in the body. When the set screw () is tightened, it deflects the bridge () closing the gap as the bridge () contacts an exterior surface of each head () of the polyaxial fasteners (). The angulation of each polyaxial screw () is adjustable, controlled by the tightening of the set screw. Initial contact of the bridge () with the head () of the fastener () reduces angulation movement of the shank () requiring manual manipulation. Increased tightening of the set screw () fixes the angulation as the bridge () reduces the gap and increases fastener head contact forces.

Spinal fusion system

The present invention provides a unique way to provide a self-locking screw opening that has no separate parts. The self-locking feature () is formed in the wall () of the screw receiver opening () and automatically locks a screw () from backing out. During insertion of the screw () into bone, the screw head () passes one or more, preferably two nubs () or one or more projections () formed into the surface wall () of the receiver opening (), and as the screw () is threaded into the bone, the screw head () contacts the nubs () or projection () and the screw () is deflected slightly in a direction opposite the nubs () or projection () allowing the screw head () to pass by the nubs () or projection () locking the screw () from backing out.

Self-locking bone screw receiver

Presented herein is a bone screw system that comprises a fixation element, a receiving element, coupling element, and a compression element. The fixation element can be a screw. The receiving element defines an internal bore sized to receive the shank portion of the fixation element and a seat adapted to support the head portion of the fixation element. The seat of the receiving element is shaped to substantially conform to an exterior portion of the head portion of the fixation element. A breakaway groove is positioned externally on each leg or leg extension. The breakaway groove extends inwardly at least partially through the wall of each leg or leg extension. This creates an aperture or slit in the wall leaving the wall with at least on, preferably a pair of leg attachments on each leg or leg extension adjacent the aperture.

Tab bone screw system

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Alpharetta, GA, United States of America

Michael Glatzer