Published: 31 March 2009

Development of micro ultrasonic motor for surgery

Shigeki Toyama1
Tomoaki Mashimo2
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Abstract

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

Received
11 January 2007
Accepted
10 March 2007
Published
31 March 2009
Keywords
piezoelectric actuator
endovascular medicine
micro mechanism
rotary-linear
ultrasonic motor