The intervertebral implant with superfu00eccies hemispherical articular

摘要

"The intervertebral implant with superfu00eccies hemispherical joint.An intervertebral implant (1), in particular an artificial intervertebral disc with a geometric axis (2), a central part of the top (3), a part of the bottom (4),In which the) part of the top (3) has a surface area of juxtaposition of the top (5),It is appropriate to put her on a base plate of a body of vertebra situated above it; (b) the part of the bottom (4) has an area of juxtaposition of the bottom (6) which is suitable for putting her in the PLACA to cover a body of vertebra located below it; (c) one of the two parts (3,(4) comprises a part of the convex (12) with a first articular surface and the other of two parts (3,4) a housing seal (13) with a second joint surface B mounted in a sliding way in the first joint surface; and (d) the part of the convex (12) and the housing of the gasket (13)Form a joint (9), by means of which the two parts (3,4) can rotate a in relation to the other at least about a geometric axis of rotation.While one of the parties and) comprises at least one half of the Union (2), by which the two parties (3)4) are held together without giving the ability of gasket (9) to articulate and (f) the middle of the Union (20) allows in any joint of the joint (9) an axial clearance x 0 between the two parties (34).