Design and Fabrication of Concentric Tube Robots: A Survey

• Published in: IEEE transactions on robotics Vol. 39; no. 4; pp. 2510 - 2528
• Main Authors: Nwafor, Chibundo J., Girerd, Cedric, Laurent, Guillaume J., Morimoto, Tania K., Rabenorosoa, Kanty
• Format: Journal Article
• Language: English
• Published: New York IEEE 01-08-2023; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Actuation; Automatic; Computer Science; Concentric tube robots (CTRs); continuum robots; Data Structures and Algorithms; Electron tubes; End effectors; Engineering Sciences; Fabrication; Kinematics; Prototypes; robot design; Robots; Shape; Specifications; State-of-the-art reviews; surgical robotics; Tubes
• ISSN: 1552-3098; 1941-0468
• DOI: 10.1109/TRO.2023.3255512

Concentric tube robots (CTRs) have drawn significant research attention over the years, particularly due to their applications in minimally invasive surgery (MIS). Indeed, their small size, flexibility, and high dexterity enable several potential benefits for MIS. The research has led to an increasing number of discoveries and scientific breakthroughs in CTR design, fabrication, control, and applications. Numerous prototypes have emerged from different research groups, each with its own design and specifications. This survey paper provides an overview of the state of the art of the mechatronics aspects of CTRs, including approaches for the design and fabrication of the tubes, actuation unit, and end effector. In addition to the various hardware and associated fabrication methods, we propose to the research community, a unifying way of classifying CTRs based on their actuation unit architecture, as well as a set of specification details for the evaluation of future CTR prototypes. Finally, we also aim to highlight the current advancements, challenges, and perspectives of CTR design and fabrication.