Patent ID: 8388664

Claim:
An implant locking plate system for preventing the migration of an implant, comprising: a bone anchor screw configured to be inserted into bone, the bone anchor screw having a T-shaped head region at a proximal end, the T-shaped head region comprising two oppositionally disposed screw armatures extending radically outward from the central axis of the screw, and an elongated threaded shaft extending from the head region to a distal end of the bone anchor screw; a plate having proximal and distal ends and configured to stabilize the position of the implant, the plate including: a bone anchor screw retaining region at its proximal end having at least two plate armatures defining independent slots, each of said slots disposed along the longitudinal axis of the plate and being interconnected in a rotatable and sliding relation with one of the screw armatures of the T-shaped head region of said bone anchor screw, such that the plate may rotate azimuthally about the T-shaped head region of the screw, and such that the screw armatures may slide within the slots along the longitudinal axis of the plate, and the plate further including an elongated body at its distal end attached to said bone anchor screw retaining region and being dimensioned such that the elongated body at least partially overlaps the implant when the bone anchor screw is inserted into an adjacent bone; and the plate configured to have a locking configuration where the plate is rotated about the screw armatures of the screw head such that the elongated body abuts against the implant, and where the T-shaped head region of the screw is slidably disposed at the distal end of the plate armature slots in the retaining region of the plate, wherein in said locking configuration the retaining region abuts the adjacent bone and prevents further rotation of the plate such that the elongated body is fixed against the implant.