Lateral plate

摘要

A bone plate system is provided. The system includes two or more fastener locks stacked on top of each other and located between two holes in a plate adapted to receive bone fasteners. An actuator is provided between the locks. As the actuator is advanced, the locks are moved sequentially into position, firstly, to prevent one or more bone fasteners from backing out of the plate while permitting the fasteners to angulate and, secondly, to lock the angulation of the bone fasteners while still providing back out protection in situ. An expandable bone plate having a top plate interconnected to a bottom plate by a rack and pinion is provided. The rotation of the pinion with a driver lengthens or shortens the plate incrementally for custom length adjustment. The length is fixed in position with the simple removal of the driver and no further step is required to lock the plate length.

主权项

1. A bone plate system, comprising:
a plate having at least one hole configured to receive a bone fastener for attaching the plate to bone; the plate having a top surface and a bottom surface interconnected by a side surface; an actuator located adjacent to the at least one hole; the actuator having a proximal end, a distal end, a longitudinal axis and an outer surface; in a cross section of the actuator taken perpendicular to the longitudinal axis, the outer surface of the actuator defines a shape having a length defined from its center to its perimeter; the length increases in progressively proximal cross sections perpendicular to the longitudinal axis, the actuator being connected to the plate such that the actuator moves relative to the top surface of the plate; at least two locks stacked on top of each other and located between the actuator and the at least one hole; each lock having at least one actuator-facing surface and at least one fastener-facing surface; the at least two locks being coupled to the plate such that at least a portion of each lock is movable relative to the plate, the actuator-facing surface faces the actuator, and the fastener-facing surface faces the at least one hole; wherein movement of the actuator in a first direction relative to the plate moves at least a portion of each lock laterally closer to the at least one hole and moves the at least two locks consecutively with respect each other.