Abstract: A surgical device suitable for use in spinal fusion of the cervical vertebrae is provided. The surgical device includes an inner tubular body and an outer tubular body. The inner and outer tubular body each has a lengthwise region and a distal portion with a discontinuous wall forming a fenestration. The fenestrations are alignable to provide a passage through the wall of the surgical device. The surgical device may provide any of several benefits, including unobstructed access to a surgical site, greater stability, and improved tactile control.

Abstract: A surgical device suitable for use in spinal fusion of the cervical vertebrae is provided. The surgical device includes an inner tubular body and an outer tubular body. The inner and outer tubular body each has a lengthwise region and a distal portion with a discontinuous wall forming a fenestration. The fenestrations are alignable to provide a passage through the wall of the surgical device. The surgical device may provide any of several benefits, including unobstructed access to a surgical site, greater stability, and improved tactile control.

Abstract: The invention relates to a method and apparatus for immobilizing adjacent bone segments. An osteosynthesis plating system is provided for fixing or immobilizing several pieces or segments of bone utilizing screws which may be screwed into the segments of bone through openings provided in the osteosynthesis plate. The osteosynthesis plate is pressed against the bone surface by the screws and fixed thereto. In particular, the invention relates to an osteosynthesis extension plate for immobilizing adjacent segments of bone in a second surgery wherein the removal of a previously implanted osteosynthesis plate is avoided. In this manner the disadvantages associated with removal of the previously implanted plate are avoided.

Abstract: The invention relates to a method and apparatus for immobilizing adjacent bone segments. An osteosynthesis plating system is provided for fixing or immobilizing several pieces or segments of bone utilizing screws which may be screwed into the segments of bone through openings provided in the osteosynthesis plate. The osteosynthesis plate is pressed against the bone surface by the screws and fixed thereto. In particular, the invention relates to an osteosynthesis extension plate for immobilizing adjacent segments of bone in a second surgery wherein the removal of a previously implanted osteosynthesis plate is avoided. In this manner the disadvantages associated with removal of the previously implanted plate are avoided.

Abstract: A spinal fixation device includes a threaded stud having an open-ended axial slot to straddle a rod of a vertebral support, and a bracket which is rotatable on the stud. A vertebra bone screw passes through an opening in a distal end of the bracket. The stud and bracket are locked in position relative to the rod by a nut. An insert within the slot bears against the rod and prevents the stud from being deformed by the force of the nut on the stud segments. The bracket can be rotated around the stud; and the stud can be rotated around and slid along the rod, to afford great adjustability and ease of attachment.