A polyaxial surgical screw and device for implanting said surgical screw

A device for implanting a polyaxial surgical screw, said screw having an internally hollow tulip displaying a first open end for accessing inside the tulip, a second end opposite to the first end, and a side wall extending between the first and the second end;

• and at least one elongated rod projecting from the side wall and extending from the first end in a direction opposite to the second end, said screw having, in addition, a threaded shank displaying a first end defining the tip of the screw and a second end opposite to the first one displaying a ball joint joined to the second end of the tulip to orient said shank with respect to the tulip itself;
• said device comprising:
• a shaped tip for engaging the second end of the threaded shank to rotate the shank itself about its own longitudinal extension axis;
• a tubular body having a first end supporting the shaped tip and a second end opposite to the first end and configured to remain outside a patient's body, said tubular body also displaying at least one housing cavity configured to engage said elongated rod of the surgical screw;
• and
• a rotation component of the shaped tip, extending along the tubular body and configured to be actuated by an operator;
• wherein said tubular body comprises two housing cavities configured to engage said elongated rods of the surgical screw;
• said cavities being spaced apart by two corresponding arched walls, each of which displaying two longitudinal edges which can abut with the longitudinal edges of the elongated rods;
• said arched walls defining, in cooperation with the outer surfaces of the elongated rods, a continuous cylindrical surface with a circular cross-section.