Special bone crusher for spinal fusion

The invention discloses a special bone crusher for spinal fusion, and particularly relates to the technical field of bone crushing treatment. The special bone crusher comprises a tank body, a crushing hammer is arranged at the top of an inner cavity of the tank body, a moving assembly is fixedly arranged at the top of the crushing hammer, a feeding pipe is fixedly arranged on the outer wall of one side of the top of the tank body, a base plate is arranged at the bottom of the crushing hammer, the base plate is movably clamped in the tank body, and an annular plate is fixedly arranged at the bottom of the base plate. Bulk bones flow onto the base plate through the feeding pipe, then an electric push cylinder is started to drive the crushing hammer to move downwards, the bones are crushed firstly, the crushed bones flow into a first grinding block through the annular plate and flow onto a second grinding block from a round hole in the first grinding block, a driving assembly drives the second grinding block to