Development of a spiral type of wireless microrobot

In this paper, we proposed a spiral type of microrobot that can move in human organs such like intestines, even blood vessels as an assumption has a great potential application for microsurgery. We begin with a mechanical study of the fish-like microrobot made by magnetic actuator. And then, based on the previous researches, the structure of the developed microrobot has been designed. The model of the microrobot utilizes an electromagnetic actuator as the servo actuator to realize movement. By applying the alternate magnetic field, the developed microrobot can be manipulated with rotation movement in a pipe. And also, the motion mechanism, and characteristic evaluation of the microrobot have been discussed, and the speed of rotation movement can be controlled via frequency of the input current. The moving experiments have been carried out in a pipe by changing frequency. The microrobot has a rapid response, and it can clear out dirt which is adhering to the inner wall of pipe. This microrobot will play an important role in both industrial and medical applications such as microsurgery.