Z MIS Mono Pedicle Screw

The mono pedicle screw is characterized in that the left and right sides of the upper part of the ball head screw are provided with side tables that are arcuate upwards on the upper side, and the ball head of the ball screw between the two side tables is provided The upper side is a central boss protruding upward in an arc shape. The arc center of the central boss and the arc center of the two side bosses are on the same straight line. Position the lower part of the pressure ring and the left and right sides of the rod groove An arc-shaped concave surface matching the two side tables is arranged on the upper part, and a positioning-pressure ring in the middle of the two arc-shaped concave surfaces is provided with an arc-shaped groove matching the central boss.

Mono pedicle screw can be used to fix lumbar disc herniation.