Abstract: A polyaxial pedicle screw may include a receiving head having a transversal U-shaped passage, and a shank having a threaded portion external to the receiving head, and a bulging end rotatable housed within the receiving head. The polyaxial pedicle screw may include a locking insert housed within the receiving head and matable with the bulging end, for locking it into position, and a set-screw engaged in the distal aperture for locking a connecting rod received within the transversal U-shaped passage. The receiving head of the polyaxial screw may include a lateral aperture, the lateral aperture exposing a contact surface of the locking insert in such a way that external pressing component can act on the contact surface to maintain the locking insert into its locking position.

Abstract: An intervertebral implant for the fusion between two vertebral bodies of a vertebral column may include a body having two opposite surfaces and holes or cavities for filling purposes during bone growth, and an engagement portion for receiving a gripping end of a positioning instrument. The engagement portion may be shaped as a splined shaft accessible through an opening of the body.

Abstract: An instrument positions an intervertebral implant for the fusion between two vertebral bodies of a vertebral column. The instrument may include a handle having a proximal and a distal end, a locking shaft extended from the distal end of the handle, and a grasping head at the distal end of the shaft. The locking shaft may be cannulated, and a stem may be hosted inside the cannulated shaft passing through the handle. The stem may be free to rotate with respect to the locking shaft, or vice versa, while the grasping head may be formed at the distal end of the stem with a couple of prongs or clamps toward the other according to an angular relative rotation of the stem with respect to the locking shaft. The instrument may allow the surgeon to grip a corresponding implant with a simple rotation movement of his hand.

Abstract: An instrument positions an intervertebral implant for the fusion between two vertebral bodies of a vertebral column. The instrument may include a handle having a proximal and a distal end, a locking shaft extended from the distal end of the handle, and a grasping head at the distal end of the shaft. The locking shaft may be cannulated, and a stem may be hosted inside the cannulated shaft passing through the handle. The stem may be free to rotate with respect to the locking shaft, or vice versa, while the grasping head may be formed at the distal end of the stem with a couple of prongs or clamps toward the other according to an angular relative rotation of the stem with respect to the locking shaft. The instrument may allow the surgeon to grip a corresponding implant with a simple rotation movement of his hand.

Abstract: An intervertebral implant for the fusion between two vertebral bodies of a vertebral column may include a body having two opposite surfaces and holes or cavities for filling purposes during bone growth, and an engagement portion for receiving a gripping end of a positioning instrument. The engagement portion may be shaped as a splined shaft accessible through an opening of the body.

Abstract: A polyaxial pedicle screw may include a receiving head having a transversal U-shaped passage, and a shank having a threaded portion external to the receiving head, and a bulging end rotatable housed within the receiving head. The polyaxial pedicle screw may include a locking insert housed within the receiving head and matable with the bulging end, for locking it into position, and a set-screw engaged in the distal aperture for locking a connecting rod received within the transversal U-shaped passage. The receiving head of the polyaxial screw may include a lateral aperture, the lateral aperture exposing a contact surface of the locking insert in such a way that external pressing component can act on the contact surface to maintain the locking insert into its locking position.