Polyaxial pedicle screw with a threaded rod section (2) for fixing the pedicle screw (1) in a vertebra at one of whose axial ends a rod head (4) is formed which is rotatably and / or pivotably coupled with a housing bushing (8) for a longitudinal support (24) having a fixing agent for the selective positioning of the housing bushing (8) with respect to the rod section (2), at least composed of a punch ( 16) housed in the housing bushing (8) acting on the rod head (4) and a locking element (22) acting through the longitudinal support (24) on the punch (16), directly threaded or unscrewed in the housing bushing (8), the punch (16) being configured with punch gear elements (20) not covered or overlapped by the locking element (22) for the introduction of a provisional pressure force on the punch ( 16) for In parallel with the locking element (22) and the housing bushing (8) presenting a bushing body (10) open on both sides, particularly cylindrical, the bushing wall of which is open from a U-shaped proximal front side, resulting from two radially opposite flanks, characterized in that the punch gear elements (20) are between the two flanks.Tornillo pedicular poliaxial con una sección de vástago roscado (2) para la fijación del tornillo pedicular (1) en una vértebra en uno de cuyos extremos axiales está formada una cabeza de vástago (4) que está acoplada de manera giratoria y/o pivotable con un casquillo de alojamiento (8) para un soporte longitudinal (24) que presenta un agente de fijación para la fijación de posición selectiva del casquillo de alojamiento (8) respecto a la sección de vástago (2), al menos compuesto por un punzón (16) alojado en el casquillo de alojamiento (8) que actúa sobre la cabeza de vástago (4) y un elemento de bloqueo (22) que actúa por medio del soporte longitudinal (24) sobre el punzón (16), directamente roscado o desenroscado en el casquillo de alojamiento (8), estando configurado el punzón (16) con elementos de engrane de punzón (20) no cubi
