Medical instrument for implanting pins

A medical instrument for putting pins (2) into place in a long bone (3), the instrument being characterized in that it comprises:

• at least one rectilinear pin (2) presenting a determined length and a determined diameter;
• an insertion trocar (5) comprising a guide sheath (6) presenting a pointed distal end (6a) and a proximal grip end, a removal obturator (7) being slidably mounted inside the sheath from its proximal end;
• a guide (10) for a pin (2) the guide comprising a flexible tube (11) presenting an outside diameter less than the inside diameter of the sheath of the trocar to enable it to be inserted in the sheath from its proximal end, after the obturator has been removed, the flexible tube (11) presenting between its distal end and its proximal end a length that is greater than the length of the pin and an inside diameter that is greater than the diameter of the pin so as to leave operating clearance enabling the pin to move in translation inside the flexible tube;
• and
• a positioner (13) for positioning a pin (2), the positioner comprising an obturator (14) possessing an outside diameter less than the inside diameter of the flexible tube (11) in order to enable it to be inserted in and to slide inside the flexible tube, the obturator (14) presenting a distal end (14a) forming a thrust surface for the pin (2) in order to position the distal end of the pin at the distal end of the flexible tube, the obturator (14) externally defining a guide surface (14g) for the flexible tube (11) over a length not less than the length of the flexible tube.