Published: 31 March 2009

Development of micro ultrasonic motor for surgery

Shigeki Toyama1
Tomoaki Mashimo2
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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

About this article

11 January 2007
10 March 2007
31 March 2009
piezoelectric actuator
endovascular medicine
micro mechanism
ultrasonic motor