2E1-2 コイル型超音波モータの小型化に関する研究(OS3-1:医療福祉ロボットとマイクロマシン技術I,オーガナイズドセッション)

概要

論文の詳細を見る
IVUS (Intravascular Ultrasound) is a useful medical device to observe a state of inner wall of blood vessel, and such a micro motor less than 1mm in outer diameter is desired to apply IVUS in narrow brain vessels. In our previous works, we developed ultrasonic micro motor with a quite simple structure consisting of a coil type stator, waveguide and cylindrical rotor. The latest prototype was the world thinnest motor with 0.95mm diameter. However, there remains a limit of outer size as the coil is made of. 0.15mm diametric wire. In order to improve this point, the coil of stator made of thin foil has been applied in stead of the coil made a wire. A prototype with 0.05mm thick foil type stator was made. Its rotational speed was 3000-5500rpm. Its prototype rotated to the same direction of propagation of progressive wave and was opposite to the former motor with coil wire type stator. Its prototype has been measured wear of rotor in inner diameter and has been driven in the water.
一般社団法人日本機械学会の論文
2009-09-23