A screw-driver for combining a pedicle screw

PURPOSE: A driver for combining a pedicle screw is provided to prevent the abrasion of a tip by suppressing the separation of the pedicle screw from the driver. CONSTITUTION: A main rod(110) has a handle and a tip part(111) to be combined with a pedicle screw(200). A rod housing rotates around the main rod and includes a screw part which is screwed with a head part. A latch gear is formed around the rod housing with a sawtooth shape. A latch dial(141) is rotatably supported on the main rod and surrounds the latch gear. A stopper is engaged with or released from the latch gear according to the rotation of the latch dial.