Patent ID: 8523862
Filing Date: 2013-09-03
Classification: A61B,Y10T

Abstract:
1. A drill guide system for a bone plate having holes therethrough for receiving bone screws, comprising: a guide block having at least two drill guide bores, each bore alignable with a bone screw receiving hole in a bone plate, the guide block having a first surface for contacting a surface of a bone plate and a second surface opposite the first surface; a locking element extending through a drill guide into the bone plate bone screw receiving bore, the locking element having a bore with a threaded portion and a bifurcated tip for engaging an inwardly extending protrusion on the wall of a bone screw receiving hole in the bone plate, the tip having an outwardly extending flange engaging a surface of the bone plate protrusion facing a bone contacting surface of the bone plate; an axially movable rod having a threaded portion mounted in the threaded bore portion of the locking element, the rod having a head engaging the second surface of the guide block and a tip engaging a bore in the tip of the locking element and capable of spreading sections of the bifurcated tip on axial movement of the rod prior to the rod head contacting the second surface of the aiming block, wherein the axially moveable rod has an outwardly extending first stop surface and wherein the locking element has a stop pin extending through a wall of the locking element in a direction transverse to the bore therein into the bore of the locking element, the locking element stop pin engageable with the axially moveable rod first stop surface on movement of the rod element head away from the second surface of the guide block.