The COSY Cervicothoracic Occipital Rod-Screw is a multiple component, posterior spinal fixations system which consists of solid screws, cannulated screws, standard tulips, angulated tulips, curved rods, straight rods, hybrid rods, parallel connectors, inline connectors, occipital plates, occipital bone screws, hooks, and offset connectors. All implants, except of variations of the rods, are available in Ti-6AL-4V ELI per ASTM F136. Rods are available in Ti-6AL-4V ELI per ASTM F136 or Co-Cr28-Mo6 per ASTM F1537. The pedicle screws consist of a tulip and a pedicle screw shaft. The shaft has aprominent thread, to provide anchorage of the screw in the pedicle section of the vertebrae. Each tulip is securely attached to the rod via a set screw. The shafts of the pedicle screws are provided in different lengths, diameters, fully or partially threaded, and with a symmetric or asymmetric angulation to provided adaptability to the patient’s anatomy. The rods can be shortened on site by the surgeon. The occipital plate is available with four or five holes and areas to be bent for better fixation to the occipital part of the skull. The plate is fixed via bone screws and as two gliding tulips to provided anchoring of the rod. The gliding tulips are constructed similar to the tulips of the pedicle screws in the area of the rod- set screw -tulip intersection.
A small, implantable, non-bioabsorbable disc, threaded on its outside surface, intended to be threaded into the internal proximal end of a spinal bone screw head/rod adaptor, anchor, connector and/or hook (none included) to secure/stabilize a rod and/or tether as part of an internal spinal fixation procedure or a treatment for idiopathic scoliosis. It is made of metal (e.g., surgical steel, titanium alloy).
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