INTERVERTEBRAL DISC PROSTHESIS Russian patent published in 2012 - IPC A61F2/44 

FIELD: medicine.

SUBSTANCE: invention relates to medical equipment and can be used in traumatology and/or neurosurgery for replacement o damaged or pathologically altered human natural intervertebral discs in all parts of spine. Prosthesis contains, at least, two parts, made, for instance, from titanium or zirconium alloys, including lower and upper plates, each of which has internal surface, facing, respectively, internal surface of the other plate, and external surfaces, facing vertebrae. On internal surface of each plate fixed are elements with surface of rotation, for instance, spherical, interacting with response surface of rotation of element on the opposite plate, one of surfaces of rotation being convex, the response one, respectively being concave, with said surfaces being made from isotropic pyrolytic carbon, possessing higher wear resistance and low friction coefficient.

EFFECT: invention ensures release of compression impact on spinal cord roots due to recovery of intervertebral space height, anatomical correspondence of dynamic intervertebral disc prosthesis, increase of biocompatibility, wear resistance and improvement of osteointegration.

6 cl, 3 dwg