Filling material for filling a vertebral body cavity, intervertebral prosthetic disc nucleus and vertebroplasty prosthesis comprising such a material

摘要

The invention concerns in particular an invertebral prosthetic disc nucleus (1) in the form of a flexible filament (5) of a biocompatible elastomer. The filling material is adapted for injecting by means of a hollow needle (4) into the cavity (2) of the annulus. The filament winds when contacted with the walls (6) and with its own segments so as to form an entanglement filling the cavity.