PEDICLE SCREW

摘要

PURPOSE: In the pedicle screw is the binding process of the load, damage due to the twisting created between the bolt part and head unit and deformation is reduced by pressurizing the bolt part through the load. CONSTITUTION: The bolt part(20) is inserted through the cork(21) formed in the outer circumference into the bone. The stepped pulley part(22) having the diameter expanded to the upper of above mentioned male screw acid is into one body formed in the bolt part. The opening hole formed in the bottom of above mentioned male screw acid is the head unit(10) is through passed.