Patent ID: 6214006
Filing Date: 2001-04-10
Classification: A61B

Abstract:
An apparatus for bracing a plurality of vertebrae of the human spine, comprising: at least two pedicle screws having a shaft and a head including a slot which extends into the head and includes internal thread portions, a securing screw to be screwed in said slot on said thread portions, a threaded rod to be inserted into the slot in the head of the pedicle screws and secured by said securing screws, and adjusting nuts screwed on said rod and cooperating with said head wherein the head of the pedicle screw has a pair of faces in the area of said slot defining a width therebetween smaller than a diameter of the securing screw so that a portion of the screw extends beyond the head faces and wherein the adjusting nut has a recess provided on the face thereof adjacent the head face for cooperating with said securing screw portion to prevent the rotation of the nut after the securing screw is threaded into said slot.