Pier bridge style screw system for vertebral arch pedicle
A pedicle screw and bridge-type technology, applied in the direction of internal fixator, internal bone synthesis, fixer, etc., can solve the problem of many idle parts, and achieve the effects of avoiding inventory, saving production costs, and reducing costs
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[0012] Such as figure 1 , 2 , the pier bridge type pedicle screw system of the present invention, it is made up of several orthopedic rods 1 and cross bridge 2 and a plurality of pedicle screws 3, wherein orthopedic rod 1 is a cylindrical rod body, and cross bridge 2 is a flat square column Body, pedicle screw 3 includes a screw rod 4, the lower body of the screw rod 4 is provided with an external thread 5, and the enlarged screw head 6 at the upper end has a U-shaped deep groove 7 matching the outer diameter of the orthopedic rod 1, and the enlarged screw The two sidewalls of the corresponding U-shaped deep groove 7 of the head 6 are all provided with internal and external threads 8,9, and the feature of the present invention is that on the two sidewalls of the enlarged screw head 6, there are holes corresponding to the direction of the U-shaped deep groove 7. The shallow square groove 10 that is vertical and conforms to the shape of the cross bridge 2, the orthopedic rod 1 ...
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