PEDICLE SCREW

摘要

PURPOSE: The pedicle screw minimizes the deformation or the rubbing of the part which is touched by it sleeps with the stepped pulley part, forming incline on the part coming in contact with each other between the laver rib. CONSTITUTION: The screw part(21) comprises the cork formed in the outer circumference. The bolt part(10) is formed by extending the upper end of the screw part to the regular length. It is formed in the bottom of the head unit(20) so that the opening hole pass through the screw part. The lock chamber(12) accepting the upper of the bolt part is formed inside the head unit.