Patent ID: 7166109
Filing Date: 2007-01-23
Classification: A61B

Abstract:
1. A fixing device for fixing bones, the fixing device comprising: a first screw element having a threaded shank and a ball segment-shaped head; a holder for encompassing a rod, and for receiving the ball segment-shaped head of the first screw element, the holder comprising a lower portion and an upper portion; and a second screw element for connecting together the upper and lower portions and simultaneously fixing the first screw element and the rod in the holder; wherein each of the upper portion and the lower portion have a first threaded bore hole, the first threaded bore holes of the upper portion and the lower portion aligned to simultaneously receive the second screw element for connecting the two portions; wherein each of the upper portion and the lower portion have, on one side of the first threaded bore hole, a cylinder segment-shaped recess for receiving the rod and, on a side of the first threaded bore hole opposite the cylinder segment-shaped recess, a through hole comprising a ball segment-shaped portion for receiving the ball head and for passage of the threaded shank or a tool for turning the screw; wherein the upper and lower portions have identical structure and are arranged inversely symmetrically to each other to form the holder.