Intervertebral bone grafting device assembly convenient to dredge

The intervertebral bone grafting device assembly comprises a discharging mechanism and a dredging mechanism, the discharging mechanism comprises a discharging hopper, an annular base is arranged below the discharging hopper, an external thread cylinder is arranged outside the annular base, an internal thread cylinder is meshed with the outside of the external thread cylinder through threads, and the dredging mechanism is arranged on the discharging hopper. And column heads are symmetrically arranged at the end, away from the discharging hopper, of the annular base through a moving mechanism, an arc-shaped guide plate is arranged below the column heads, a guide groove is formed in the side, away from the arc-shaped guide plate, of each column head, a bearing is arranged below the inner threaded cylinder, and a discharging pipe is arranged on the inner threaded cylinder through the outer ring of the bearing. The intervertebral bone grafting device mainly solves the problem that a bone grafting pipeline of a tra