Development of micro ultrasonic motor for surgery

Shigeki Toyama, Tomoaki Mashimo

Research output: Contribution to journalArticlepeer-review


We present a micro ultrasonic motor having rotary and linear motions for endovascular diagnosis and surgery. The stator prototype is a cube of side 3.5mm, and the main body is fabricated as a single metallic cube with a through-hole at the center. Four piezoelectric elements are bonded to the sides of the stator. When AC voltage is applied to the piezoelectric elements, the circumference of the stator generates elliptical motions. We can obtain the output from a shaft inserted through the hole. We developed the first prototype of the stator, and determined the rotary-linear motion.

Original languageEnglish
Pages (from-to)27-33
Number of pages7
JournalJournal of Vibroengineering
Issue number1
Publication statusPublished - Mar 2009
Externally publishedYes


  • Endovascular medicine
  • Micro mechanism
  • Piezoelectric actuator
  • Rotary-linear
  • Ultrasonic motor

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanical Engineering


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