Patent ID: 9387020
Filing Date: 2016-07-12
CPC Classification: A61B

Claim Text:
1. A bone plate system for repair of a fracture of a major bone of a skeleton of a vertebrate, which system comprises: a fixation plate having a main body which includes (a) an outer surface having a recessed portion formed therein, (b) a plurality of holes for passage therethrough of fastening screws for fastening said fixation plate to a surface of an intact bone within which a fracture has occurred to create a fractured separate bone portion thereof and (c) a plurality of holes formed in the recessed portion through which elongated compression screws can be passed which will extend through drilled passageways in the intact bone and screw into cortical bone of said fractured separate portion thereof, a plurality of said fastening screws, a plurality of said elongated compression screws having heads and threaded distal end portions, a cover plate which, when installed as a part of the implanted bone plate system, has an inner surface that is spaced a defined distance from the heads of said elongated compression screws to provide a gap between said inner surface and the recessed portion of said fixation plate, said cover plate having a peripheral protruding lip that contacts the recessed portion of said fixation plate and surrounds a central region of said inner surface, and fasteners for securing said cover plate to said fixation plate with said inner surface spaced said defined distance of between about 2 and about 6 mm from the heads of said elongated screws so that, upon compression of said fractured portion and said intact bone, pointed tips of said threaded end portions of said elongated compression screws remain connected within the cortical bone of said fractured bone portion while said heads of said elongated compression screws can move longitudinally into the gap between said fixation plate recessed portion and said cover plate inner surface.