カプセル内視鏡に搭載する細胞診ブラシ用マイクロ磁気アクチュエータの試作

抄録

In this paper, we have proposed two kinds of magnetic microactuators for a cytology brush built into a capsule endoscope. One is a moving-magnet linear actuator, in which rotational oscillation of a permanent magnet is converted into linear movement through friction. The other is a rotating-magnet actuator with a flexible push-pull wire. Both actuators can be driven by external magnetic field and rub the brush back and forth. As a result of the operation test, they successfully pushed and pulled the brush back and forth along the surface of raw meat. Furthermore, we have added a new function of angular positioning to the capsule by DC magnetic field perpendicular to the magnetic field for rubbing brush.