US Patent 10219850 Osteosynthesis screw

The invention relates to an osteosynthesis device intended for holding, distraction or compression of fragments of a fractured bone. The device comprises a threaded pin (1) having a threaded head (2) at its distal end, and a ring (4) adapted to slide on the threaded pin (1). The pin (1) and the ring (4) are made of materials allowing them to be cut. The ring (4) has at its distal end a threaded head (5) whose diameter is at least equal to the diameter of the threaded head (2) of the pin (1). The threaded pin (1) and the threaded ring (4) are hollow so as to allow them to be crimped during the cutting.