MODULAR ELEMENT FOR DYNAMIC SPINAL VERTEBRA STABILIZATION SYSTEMS

摘要

The invention relates to a modular element (1) for systems (10) of dynamic stabilization of vertebra of the spinal column, of the type comprising at least one flexible body having opposite ends (6, 7) which can be connected to respective joining elements (15, 18) to form a rod-shaped structure to be associated with at least two spinal vertebra to be stabilized. This modular element has a tubular sleeve body (2) and comprises in at least one of its central sections (9) a plurality of through notches (12) formed on at least one attitude plane transverse to the axis (X-X) of the sleeve (2). Advantageously, with such a modular element, it is possible to obtain a system (10) of dynamic stabilization of spinal vertebra with a rod-shaped structure obtained from the combination of at least one modular element (1) and of two joining elements (15) each having: a stem (11), a shaped end (19) for quick fit with the corresponding end of said modular element (1) and an annular edge (22) between stem (11) and end (19).