Prosthesis device for intervertebral disk during posterior spinal surgery, has connecting element provided with intermediate plate, where intermediate plate includes thickness such that space is formed between intermediate plate and plate

摘要

The device has two protrusions provided in complementary shapes to form a hinge. A connecting element (12) is provided between the protrusions. The connecting element comprises an elastically deformable ring (15). The connecting element is provided with an elastically deformable intermediate plate (16) between two plates. The intermediate plate has thickness such that a free space is provided between the intermediate plate and one of the plates. Throats (11, 11') are formed in an external surface of the protrusions.