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Ceramic Piezoelectric Motors: Different Processes and Developments Made in this Invention

Date Added: November 17, 2009 07:48:50 PM
Category: "M": Medical Assemblies and Instruments

If there is one main thing you should take note of about ceramic piezoelectric motors then that would be to know more of its importance to the surgical field. It is a known fact that robots are now being utilized in some surgical procedures to represent the work of human hands. But since these machines work with magnetic interference, the results they deliver are somewhat affected. This being said, the importance of robots in the surgical process needed some developments.

This is where the products known as ceramic piezoelectric motors entered the scene. The product is now said to address safety issues between MRI machines and robotic arms. The first invention was made through the collaboration of the University of Calgary and MacDonald, Dettwiler and Associates Ltd. together with the Johnson Medtech Network. The end result is the conceptualization of the neuroArm or one with 16 nonmagnetic motors. Because of the nonmagnetic aspect, the product is able to deal very well with magnetic interference.

The processes behind the neuroArm

Ceramic motors are used in order to have six rotary joints do their respective tasks. But of course, it will not function without surgeons maneuvering the system. The term piezoelectric in this industrial product has been coined from the reverse piezoelectric effect. This is responsible in converting electrical to mechanical energy thus making the latter the main source of power.

When generating ultrasonic wave, 40 kilohertz of power are applied to ceramic piezoelectric motors. The wave becomes the key factor to make the ceramic vibrate. The vibration then leads to the forward and backward motion in a component of the robotic system.

The largest of the 16 robotic motors in the neuroArm is tasked to handle the largest weight in the system. Commonly, it is placed on the base of the entire structure to handle around 12 pounds of force or weight. As for the smallest component, this can only exert 1 pound of force in the entire system.

Other developments on these motors

Aside from the neuroArm, there are other notable innovations for ceramic piezoelectric motors. Although all rely on the Nanomotion technology which the neuroArm also depends upon, some changes have been made for these motors. There is the Squiggle motor coming from New Scale Technologies whose piezoelectric effects work on generating linear movements. This new technology is now being adapted at the Rosewell Park Cancer Institute. Remember however that both the neuroArm and Squiggle are not yet commercially available.


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