The present invention relates to two technical embodiments of a remote-controlled injection device for injecting bone materials into centrum, which include an injector with a piston and a precession handspike or slip handspike, a rotational handle or driving handle is fixed at one end of the precession handspike or slip handspike, there is a base in the two embodiment, and an injector holder is fixed at one end of the base, the said injector is fastened in the injector holder with injector fixed knob by bolt, the said rotational handle or driving handle connects to the handle joint, and there is a fast disassembled connection between handle joint and dynamic joint, the dynamic joint connects with the stepper motor or linear stepper motor, and the projecting shaft of stepper motor or linear stepper motor is coaxial with precession handspike or slip handspike.
