ENDOPROSTHESIS WITH INTERMEDIATE LINK Russian patent published in 2011 - IPC A61F2/30 

FIELD: medicine.

SUBSTANCE: invention relates to medicine. Endoprosthesis contains element (4) made with possibility of connection with lower bone and having surface (44) of sliding on its upper side, element (1) made with possibility of connection with upper bone and having surface (11) of sliding on its lower side, and intermediate link (2), on whose upper and lower sides there is one surface (21, 24) of sliding, which together with surfaces (11, 44) of sliding of said elements (1, 4) in each case determine surfaces of movement for support. Surfaces (21, 24) of sliding of intermediate link (2) have different contours. Frame (3) is made two-zone: with located on perimeter belt zone and adjoining it anti-expansion zone, involving lateral surfaces of intermediate link (2) and is placed on intermediate link (2) in such a way that does not have contact with surfaces of movement, determined by surfaces (11, 44) of sliding with different contours.

EFFECT: invention ensures endoprosthesis higher reliability of enduring high loading without deformation preserving several degrees of freedom.

13 cl, 7 dwg