Expandable fusion cage with hinge

The utility model relates to the technical field of medical instruments, and discloses an expandable fusion cage with a hinge, which comprises a first fusion cage main body and a second fusion cage main body, and a rotary connecting structure capable of adjusting the angles of the first fusion cage main body and the second fusion cage main body is arranged between the first fusion cage main body and the second fusion cage main body; each of the first fusion cage main body and the second fusion cage main body comprises an upper structure and a lower structure, and an expansion gap capable of realizing expansion of the upper structure and the lower structure under the action of external force is reserved between two side surfaces of the upper structure and the lower structure; according to the expandable fusion cage with the hinge, the problems that the expanding angle of an existing fusion cage structure cannot be adjusted, and the expanding effect is poor are solved. 本实用新型涉及医疗器械技术领域，公开了一种带铰链可扩张融合器，包括第一融合器主体和第