DEVICE FOR COVERED SCREWING OF BROKEN AND SHORTENED BONES

摘要

Object of the application is a device for screw-stabilization of shortened fractures (mainly heel bone fractures) , consisting of a distracting unit, a targeting unit and screws, wherein at least one screw is a distraction screw (1) with threads (2 and 3) at both ends; wherein core diameter, thread diameter and thread increment of the thread (3) next to the head (4) of the screw are greater than those parameters of the anterior thread (2) . Three adjustment screws (8) are attached to a bended frame (7) of the distracting unit (6) , wherein the terminal adjustment screws are coaxial and enclose an angle of 90 degrees with the central screw, and there are connecting elements (9) at the internal ends of the screws, capable to accommodate K- wires (19, 20, 21) . The targeting unit (10) consists of a bended frame (11) equipped with a targeting spike (13) on one end, and with one or more guiding sleeves (12) on the other end.