Screw implantation device

A screw implantation device, comprising:

• a transmission assembly, wherein the transmission assembly includes:
• a hollow transmission shaft having a first end and a second end, wherein a plurality of limiting members are disposed at the first end;
• and
• a transmission connecting member, wherein the transmission connecting member is rotatably sleeved around the first end, two latching protrusions are disposed on two sides of the transmission connecting member, and each of the latching protrusions has a dent;
• and
• a guide pin assembly detachably assembled to the first end of the hollow transmission shaft, wherein the guide pin assembly includes:
• a socket member;
• a coupling member having a hollow structure, wherein the coupling member is detachably connected to the socket member, the hollow transmission shaft is sleeved around the socket member and connected to the coupling member, and two first protruding portions are disposed on two sides of the coupling member;
• and
• a guide pin passing through the coupling member and connected to the socket member;
• wherein, when the guide pin assembly is assembled to the hollow transmission shaft, the transmission connecting member is configured to rotate around an axis of the hollow transmission shaft, such that the two first protruding portions are respectively engaged in the two dents and blocked by the two latching protrusions, so as to fix the guide pin assembly in place.