Research On Ultrasonic Motor Used In Ultrasonic Endoscope

This paper is mainly about research on the mini ultrasonic motor used in medical probe.Ultrasonic endoscope is the production of high technology of electronic endoscope technology and ultrasonic transducing technology, mini mechanical and electrical technology and modern computer technology, and it is now widely used in clinical. The imagining system of ultrasonic endoscope is based on the electronic endoscope and the ultrasonic probe is getting into the body and the target organ through inspect passage of electronic endoscope. Ultrasonic endoscope can not only observe the surface pathological changes, but also get the features of each layer. The ultrasonic probe must be driven by mini motor to realize sector scan. The common electromagnetic motor is hard to be miniaturization, but it is easy for ultrasonic motor. It can drive the probe directly and prolong its utility year, and it will be no electromagnetic interference. So the ultrasonic motor has a wide prospect on the similar driving system.As a new principle driver, ultrasonic motor get great development in the recent 20 years. It use ultrasonic wave as power, and pass on energy with friction, and output with rotation and displacement. It is simple structure, low rotate speed, big turn moment, and comes up with dozens of structures, and used widely such fields as robot, automation measure and control device, aviation and medical device.