Screw implantation device

A screw implantation device, comprising:

• a driving motor;
• a central shaft driven by the driving motor;
• a transmission assembly including a hollow transmission shaft, wherein the hollow transmission shaft is sleeved around and arranged coaxially with the central shaft, the hollow transmission shaft is driven by the driving motor, the hollow transmission shaft has a first end and a second end, and the driving motor is disposed at the second end;
• a guide pin assembly detachably assembled to the first end of the hollow transmission shaft and including:
• a socket member connected to the central shaft;
• a coupling member having a hollow structure, wherein the coupling member is detachably connected to the socket member;
• and
• a guide pin passing through and connected to the socket member;
• wherein the hollow transmission shaft is sleeved around the socket member and is connected to the coupling member;
• a reducer assembly disposed at the second end of the hollow transmission shaft, wherein the reducer assembly is connected to the driving motor and the hollow transmission shaft;
• and
• a pedicle screw assembly including a hollow pedicle screw, wherein the pedicle screw assembly is detachably assembled to the first end of the hollow transmission shaft and is connected to the guide pin assembly.