Abstract
In this paper, we propose two types 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 joint. Both actuators feature wireless remote drive by external magnetic field. As a result of the operation test using raw meat, the brush was successfully driven. In addition, we have applied a new function of angular positioning to the capsule by rotating magnetic field.
