Abstract: A modular pedicle screw assembly for immobilisation and stabilisation of spinal segments in a patient. One example of the modular pedicle screw assembly includes a bone screw, a uniaxial inner collet arranged to cooperate with a head of the bone screw, a seat arranged to provide seating for retention of the inner collet, and an inner collet actuator designed to engage the seat to activate the inner collet for clamping about the head of the bone screw.

Abstract: A modular pedicle screw assembly for immobilisation and stabilisation of spinal segments in a patient. One example of the modular pedicle screw assembly includes a bone screw, a uniaxial inner collet arranged to cooperate with a head of the bone screw, a seat arranged to provide seating for retention of the inner collet, and an inner collet actuator designed to engage the seat to activate the inner collet for clamping about the head of the bone screw.

Abstract: The present invention is broadly directed to a modular pedicle screw assembly 10 for immobilisation and stabilisation of spinal segments in a patient (not shown). The modular pedicle screw assembly 10 generally comprises a bone screw 12, a uniaxial inner collet 14 arranged to cooperate with a head 16 of the bone screw 12, a seat 18 arranged to provide seating for retention of the inner collet 14, and an inner collet actuator 20 designed to engage the seat 18 to activate the inner collet 14 for clamping about the head 16 of the bone screw 12.

Abstract: Disclosed herein is a device for driving a post into the ground that has: a mounting assembly for mounting the device onto a support vehicle; a mast assembly connected to the mounting assembly and a driving assembly slidably connected to the mast to slide axially thereon. The driving assembly has a vibrator and a support cup operatively connected to the vibrator that is capable of receiving an end of the post. The device drives a post into the ground by the application of vibratory and constant downward force onto the post. This invention also discloses a method of driving a post into the ground. The device of this invention is robust, sturdy and easy to use and repair.