The inter-vertebral fusion implant has hinged rocker (4) that is provided between bottom portion (2) and a cover portion (3). An expansion clamp (6) is provided with a rocker arm and a thrust element. The expansion clamps are provided opposite to each other. The thrust element is designed as a contraction element. A screw spindle (70) configured to form an actuating element for the thrust element. The actuating element is designed as a threaded joint. The actuating element is arranged for the pushing device.