US Patent 8142485 Bone connection device

An implantable orthopedic device having a load-bearing element, such as a bone plate, with at least one opening for a fixation element and one insert which can be inserted in an inclined opening in a receptacle in the bore. This insert has an external form that is at least partially complementary to the internal form of the receptacle and a central through-bore for receiving the body of the fixation element such as a bone screw. The insert also provides a locking system for holding the insert in the receptacle, in which the insert exhibits at least one locking mechanism with which conformal locking with the load-bearing element may be achieved.