Implant, in particular to be inserted between two vertebrae, comprises clamping element for axially movable piston

摘要

The implant (1) comprises two support elements (2,3) located adjacent to the vertebrae (4,5) and held in position by a cylinder (7) and piston (8) unit connected to a fluid container by a hydraulic duct (13). The piston (8) is provided with an axial groove along its outer surface, engaging with the complementary shaped front of a clamping element guided radial through a lateral extension (2) of the cylinder (7) and operated with a clamping screw (22).