Soft Eversion Robots for Colonoscopy: Challenges, Open Problems, and Emerging Solutions

📅 2026-07-11
📈 Citations: 0
Influential: 0
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🤖 AI Summary
Conventional colonoscopy entails significant patient discomfort and procedural risks, necessitating viable alternatives in the form of soft robotic systems. This study presents the first systematic evaluation of four classes of soft flipping robot architectures under realistic clinical constraints—including colon length, lumen diameter, bending angles, and working channel requirements—thereby uncovering fundamental trade-offs among soft structural design, low-friction locomotion, and functional integration. Through comparative analysis of multiple architectures, material selection, steering strategies, and payload delivery capabilities, the work identifies the core limitations preventing current designs from simultaneously fulfilling all clinical demands. Building on these insights, the paper establishes practical design guidelines and outlines key technological pathways to advance soft robotic colonoscopy toward real-world clinical deployment.
📝 Abstract
Conventional colonoscopy remains limited by patient discomfort and procedural risks, motivating research into compliant robotic alternatives. Eversion robots, which advance via pressure-driven tip growth, eliminate sliding friction against the colon wall and offer a less intrusive approach to traversal. However, no existing design simultaneously satisfies all clinical requirements. This paper benchmarks four recent eversion robot architectures against the key anatomical and clinical constraints of colonoscopy, including colon length, minimum luminal diameter, bending angle, and working-channel needs. We identify the central trade-offs each design reveals, particularly the difficulty of integrating steering and payload delivery without sacrificing the soft, low-friction behaviour that makes eversion robots attractive. We then provide design guidance across material selection, steering strategy, and payload delivery, and highlight open problems for clinical translation.
Problem

Research questions and friction points this paper is trying to address.

Soft Eversion Robots
Colonoscopy
Steering
Payload Delivery
Clinical Translation
Innovation

Methods, ideas, or system contributions that make the work stand out.

soft eversion robots
colonoscopy
tip growth
steering integration
payload delivery
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