Structural Innovation and Precision Control Research of Medical Robotic Arm for Minimally Invasive Surgery Assistance

With the rapid development of minimally invasive surgery (MIS) in modern clinical practice, the demand for high-precision, flexible and reliable medical auxiliary equipment has been continuously rising. As the core engineering equipment in minimally invasive surgical procedures, medical robotic arms play an irreplaceable role in extending the operating range of surgeons, reducing the impact of human operational errors, and improving the safety and accuracy of surgical operations. However, the traditional medical robotic arm still has obvious engineering technical bottlenecks in practical application: on the one hand, the structural design is relatively rigid, the degree of modularization is low, it is difficult to adapt to the complex and changeable surgical space and diverse surgical needs, and the operational flexibility is insufficient; on the other hand, the precision control strategy is not perfect, the positioning error is relatively large, and the anti-interference ability is weak, which is difficult to meet the high-precision operation requirements of minimally invasive surgery, and even affects the surgical effect in severe cases. Focusing on the above engineering technical problems of medical robotic arms, this paper takes the structural innovation design and precision control strategy research as the core, takes the auxiliary application of minimally invasive surgery as the specific engineering application scenario, and strictly avoids involving any medical core contents such as medical diagnosis, treatment principles, clinical trials and patient data analysis. The experimental results show that compared with the traditional medical robotic arm, the innovatively designed medical robotic arm has obvious advantages in structural strength, positioning accuracy, motion stability and operational flexibility, and can better adapt to the high-precision and high-reliability requirements of minimally invasive surgery. This research takes mechanical engineering technology as the core, takes medical scenarios as the application carrier, which not only promotes the innovation and upgrading of robotic arm engineering technology, enriches the research results of high-precision robotic arm design and control, but also provides reliable engineering support for the efficient, safe and stable operation of minimally invasive surgery.