Medical Nanorobotics: Key Technologies and Clinical Prospects

Abstract

Medical nanorobotics represents a rapidly emerging interdisciplinary frontier that integrates nanotechnology, robotics, materials science, and biomedical engineering to enable highly targeted diagnosis and therapy at the cellular and molecular levels. Unlike conventional drug delivery and minimally invasive surgery, nanorobots and nano-scale active systems can potentially navigate within biological environments, sense pathological changes, and perform localized therapeutic interventions with unprecedented precision. Recent advances in micro/nano-fabrication, biocompatible materials, propulsion mechanisms, and real-time imaging have significantly accelerated the feasibility of nanorobotic platforms. Meanwhile, artificial intelligence and bioinspired design approaches are improving autonomous navigation and adaptive control in complex physiological conditions. Despite these technological breakthroughs, clinical translation remains constrained by challenges in safety, immune compatibility, in vivo controllability, scalability of manufacturing, and regulatory uncertainty. This paper systematically reviews the key enabling technologies of medical nanorobotics, including structural design, actuation and propulsion strategies, sensing and communication methods, navigation and control systems, and biointegration. Furthermore, the paper discusses the most promising clinical application domains such as targeted drug delivery, cancer therapy, thrombolysis, antimicrobial treatment, precision surgery, and diagnostics. Finally, it outlines major barriers to clinical deployment and proposes future research directions toward safe, scalable, and clinically validated nanorobotic systems.