DEVICE FOR MAKING TOTAL ENDOPROSTHESIS OF KNEE JOINT Russian patent published in 2004 - IPC

FIELD: medical engineering.

SUBSTANCE: device has femoral part as sledges having two arcs separated with a space, symmetrical tibial part as base supported by pedicle having two beveled stiffening ribs and restrictor protrusion fixed on the base, supporting protrusion with axle arranged in parallel to anatomical axis mounted between the femoral sledge arcs and plastic platform having one side conjugated with the femoral part sledge arcs and the other side turned towards the tibial part and provided with arc-shaped slot matching restrictor protrusion and a slot corresponding to the supporting protrusion. The supporting protrusion is removable cylindrical rod mounted on the base in a way that point of intersection of cylindrical rod axis and the base is located with some space relative to the frontal edge of tibial part base along base symmetry axis equal to difference α - (3~5) mm, where α is equal to one half of tibial part bone-saw line symmetry axis segment limited with its contour. The slot for supporting protrusion is through and tibial part stiffness ribs are curved in vertical plane to match anterior edge of the base in shape. Rib bevel projection upon a plane running in perpendicular to tibial part symmetry axis is shaped as parabola each point of which is distant from the base by a value proportional to squared distance to pedicle axis.

EFFECT: wide range of functional applications; high strength and reliability, prolonged service life.

5 cl, 12 dwg