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Design of a Magnetically Anchored Laparoscope Using Miniature Ultrasonic Motors
Jingwu Li1, Zhijun Sun1, He Yan1
1State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China.
Micromachines
|June 24, 2022
Summary
This study introduces ultrasonic motors for magnetically anchored laparoscopes, enhancing surgical imaging. These motors provide sufficient torque for improved surgical efficiency and safety in minimally invasive procedures.
Area of Science:
- Medical Devices
- Robotics
- Minimally Invasive Surgery
Background:
- High-quality intraoperative imaging is crucial for surgical efficiency and safety.
- Traditional laparoscopes in single-port-access surgery have limitations in image acquisition.
- Magnetically anchored laparoscopes offer potential for improved visualization.
Purpose of the Study:
- To propose and evaluate the application of ultrasonic motors in magnetically anchored laparoscopes.
- To design and fabricate miniature ultrasonic motors for laparoscope actuation.
- To assess the performance of these motors for enhanced surgical imaging.
Main Methods:
- Design of miniature traveling wave-rotating and traveling wave-tilt ultrasonic motors.
- Fabrication of a prototype magnetically anchored laparoscope incorporating these motors.
- Experimental evaluation of motor output torque and laparoscope actuation.
Main Results:
- The miniature traveling wave-rotating ultrasonic motor achieved a maximum output torque of 1.2 mN·m.
- The miniature traveling wave-tilt ultrasonic motor achieved a maximum output torque of 1.4 mN·m.
- Both motor types demonstrated sufficient torque for actuating the magnetically anchored laparoscope.
Conclusions:
- Ultrasonic motors are suitable for driving magnetically anchored laparoscopes.
- The developed motors can successfully enhance the positioning and perspective of surgical imaging.
- This technology holds promise for improving the efficiency and safety of single-port-access surgery.
