OSCAR: An Ovipositor-Inspired Self-Propelling Capsule Robot for Colonoscopy
A research team's capsule robot mimics a parasitic wasp's ovipositor to generate 0.85 N of thrust inside slippery colons.
Deep Dive
A research team from TU Delft and Erasmus MC developed OSCAR, an ovipositor-inspired self-propelling capsule robot for colonoscopy. It uses a spring-loaded cam system to drive twelve sliders in a phase-shifted sequence, creating friction anisotropy for thrust. The robot achieves a mean traction force of 0.85 N and an average speed of 3.08 mm/s in ex-vivo tests, matching conventional procedure times while eliminating shaft looping and patient discomfort.
Why It Matters
This could make colonoscopies significantly less invasive and painful, increasing screening compliance for early cancer detection.