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Fabrication of Magnetic Microactuators for Cytology Brush Built into Capsule Endoscope
Author(s) -
YAMASHITA MAKI,
HONDA TAKASHI
Publication year - 2015
Publication title -
electronics and communications in japan
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.131
H-Index - 13
eISSN - 1942-9541
pISSN - 1942-9533
DOI - 10.1002/ecj.11648
Subject(s) - brush , magnet , actuator , magnetic field , magnetic levitation , rubbing , mechanical engineering , linear actuator , perpendicular , fabrication , materials science , acoustics , electrical engineering , engineering , physics , geometry , mathematics , quantum mechanics , medicine , alternative medicine , pathology
SUMMARY In this paper, we propose two kinds of magnetic microactuators for a cytology brush built into a capsule endoscope. One is a moving‐magnet linear actuator, in which the 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 an external magnetic field and can rub the brush back and forth. As in operational testing, we successfully pushed and pulled the brush back and forth along the surface of raw meat. We have also added a new angular positioning function to the capsule by using a DC magnetic field perpendicular to the magnetic field for rubbing the brush.