Toward Bio-Inspired Tactile Sensing Capsule Endoscopy for Detection of Submucosal Tumors

• Published in: IEEE sensors journal Vol. 17; no. 3; pp. 848 - 857
• Main Authors: Winstone, Benjamin, Melhuish, Chris, Pipe, Tony, Callaway, Mark, Dogramadzi, Sanja
• Format: Journal Article
• Language: English
• Published: New York IEEE 01-02-2017; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Cameras; capsule endoscopy; Deformation; Endoscopes; Endoscopy; Gastrointestinal system; Inspection; Lesions; remote palpation; Remote sensing; Remote sensors; Skin; Tactile sensing; Tactile sensors; Tactile sensors (robotics); tumor classification
• ISSN: 1530-437X; 1558-1748
• DOI: 10.1109/JSEN.2016.2627798

Here, we present a method for lump characterization using a bio-inspired remote tactile sensing capsule endoscopy system. While current capsule endoscopy utilizes cameras to diagnose lesions on the surface of the gastrointestinal tract lumen, this proposal uses remote palpation to stimulate a bio-inspired tactile sensing surface that deforms under the impression of both hard and soft raised objects. Current capsule endoscopy utilizes cameras to visually diagnose lesions on the surface of the gastrointestinal tract. Our approach introduces remote palpation by deploying a bio-inspired tactile sensor that deforms when pressed against soft or hard lumps. This can enhance visual inspection of lesions and provide more information about the structure of the lesions. Using classifier systems, we have shown that lumps of different sizes, shapes, and hardnesses can be distinguished in a synthetic test environment. This is a promising early start toward achieving a remote palpation system used inside the GI tract that will utilize the clinician's sense of touch.