SPINAL INTERBODY IMPLANT WITH BONE SCREW RETENTION

摘要

A spinal interbody implant has a bone screw retention mechanism that prohibits bone screws from backing out after the bone screws are installed. A bone screw retention plate is received in a plate retention area of the implant to provide a barrier that keeps the installed bone screws from backing out of their bone screw pocket. The bone screw retention mechanism consists of a retention plate and a configured plate retention area in a face of the implant body. Retention plate fasteners may be used to retain the configured plate. In one form, the bone screw retention mechanism consists of a retention plate, a configured plate retention area in a face of the implant body, and a retention plate bolt. In another form, the bone screw retention mechanism consists of a retention plate, a configured plate retention area in a face of the implant body, and a retention plate bolt.

主权项

1. A spinal interbody implant comprising:
a body having a top surface, a bottom surface, a front face, a rear face, and first and second sides; first and second bone screw bores extending through the body; a cutout formed in the front face and extending between the first and second bone screw bores; a plate configured for reception in the cutout after a bone screw has been received in at least one of the first and second bone screw bores, the plate extending over the first and second bone screw bores to prevent the bone screw from backing out of the at least one of the first and second bone screw bores; and a stop pin disposed within the body and configured to engage only a head of the bone screw to limit advancement of the bone screw through the body.