Cervical intervertebral disc prosthesis for replacing damaged cervical intervertebral disc of vertebral column of patient, has attachment unit comprising holding portions on compression cushion, where each portion cooperates with housing

摘要

The prosthesis (2) has a compression cushion (21) placed between plates (3, 4), where each plate has an internal face and an external face. Attachment units attach the cushion to the plates. One of the attachment units has housings (27) placed on the plates, where the housings emerge in cavity (11) and another cavity arranged on internal faces of the plates. The attachment unit has a set of holding portions (29) placed on the cushion, where each of the portions is arranged to cooperate with one of the housings of the plates.