Medical micro robot and micro robot system having the same

A micro robot comprising:

• a drilling body which has a drilling tip formed at an end thereof;
• a spiral coupling body which has a magnet disposed therein, and is spirally coupled to an outer circumference of the drilling body;
• and
• a system control unit which allows the drilling body and the spiral coupling body to spirally move simultaneously or allows the spiral coupling body to spirally move around the drilling body by providing a rotational magnetic field to the magnet,
• wherein a spiral protrusion, which is spirally coupled to the spiral coupling body, is formed on the outer circumference of the drilling body,
• wherein a medicine accommodating space, which has a hollow shape and accommodates a medicine, is formed in the drilling body, and a medicine injection hole through which the accommodated medicine is injected to the outside is formed at an end portion of the drilling tip, and
• wherein the spiral coupling body includes:
• a piston body which is disposed to be fitted into the medicine accommodating space in order to pump the medicine;
• and
• a spiral coil which is formed at an end portion of the piston body and spirally coupled to the spiral protrusion.