Back to results
US 8,409,285 B2Granted
Prosthesis for partial replacement of a vertebral body
AssigneeCervitech, Inc.
InventorArnold Keller
Life of this patent
Estimating the term…
Abstract
A prosthesis for partial replacement of a vertebral body includes upper and lower contact plates that contact upper and lower vertebral bodies and a bridging element to be inserted into a bone cavity that bridges an intermediate vertebral body to be replaced that lies between the upper and lower vertebral bodies. The bridging element has anchoring projections which can be moved between a retracted implantation position and a protruding anchoring position.
Claims9
A prosthesis for partial corpectomy of a vertebral body comprising:
- a first contact plate to be positioned within a first disc space for connection to a first vertebral body;
- a second contact plate to be positioned within a second disc space for connection to a second vertebral body;
- a bridging part connecting the first contact plate and second contact plate and configured to be positioned within a bone cavity of the partial corpectomy extending between the first disc space and second disc space, the bridging part including a first hinge formed between a bottom of the first contact plate and a top of the bridging part and a second hinge formed between a top of the second contact plate and a bottom of the bridging part, the first hinge and second hinge permitting movement of at least one of the first contact plate and the second contact plate relative to the bridging part after implantation of the prosthesis;
- an actuating device located on an anterior face of the bridging part;
- and
- deployable anchoring projections disposed within the bridging part and moveable outward in opposite lateral directions to penetrate into bone areas of the partial corpectomy.
3 more elements
Dependencies are inferred from the claim text.