The nuclear implant according to this invention constitutes, between two overlying and underlying vertebrae Va, Vb of a spine segment Sr, an intervertebral support device that damps shock and ensures the mobility of the functional unit that is formed by the vertebrae of a vertebral column, whereby the nuclear implant includes a filling element (2) that includes at least one continuous wire (50, 51) that is arranged—inside a nuclear space Es that is obtained after nucleotomy of the intervertebral disk Di—along a profile in the shape of a ring whose stack of coils (55) makes it possible to delimit a central internal space (52).