| 摘要 |
"IMPROVED PEDICULAR SCREW", comprising a principal body (1), that is provided of a spindle (4), being this latter by its turn susceptible of being threaded in an expansible element (10), that is previously positioned in an orifice (18) produced in a vertebral body (20), that defines the bed (21) for the same; the principal body (1) has a fixing head (3), that through a threaded pin (16) promotes the immobilization of a rigid bar (2) that is positioned against a wall (6) that integrates a lateral opening (5) provided in said fixing head (3).
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