Patent ID: 8672940
Filing Date: 2014-03-18
Classification: A61B

Abstract:
1. An implant for osteosynthesis, comprising a bone nail having a body which has at least one cross-bore with a threaded portion and a bone screw which engages the threaded portion when it is threaded into a bone for the fixation of the implant body, wherein the cross-bore has a circumferential recess the diameter of which is larger than an outer diameter of the thread and a ring of a deformable material for insertion into the circumferential recess, the ring having an inner diameter which is smaller than the outer diameter of the thread of the bone screw, wherein the bore has a screw inlet end and a screw outlet end and the circumferential recess is located between the threaded portion and the outlet end, the circumferential recess located in the bore such that the bone screw engages the threaded portion before contacting the ring, wherein a cylindrical bore portion between the annular recess and the outlet end is non-threaded, further including a non-threaded conically tapered bore portion adjacent to the inlet end.