TORSION INTERVERTEBRAL DISK ENDOPROSTHESIS Russian patent published in 2018 - IPC A61F2/44 

FIELD: medicine.

SUBSTANCE: torsion intervertebral disc endoprothesis contains upper and lower axisymmetric and opposite supporting plates with serrated fixation elements in the bodies of the vertebrae on plates outer surfaces and elastic supporting-centering elements installed between them. The inner surfaces of the lower and upper supporting plates are supplied with respectively central cylindrical pin and a ring bead along the outer generatrix with radial holes made with the same angular pitch and staggered on two levels, in which supporting-centering elements in the form of Z-shaped springs with round section are fixed at ends. The ends of each spring are installed in symmetrically arranged holes of the pin and bead at different levels.

EFFECT: simplified installation and extended service life.

3 dwg