A Pneumatic Sensor for Force Measurement in Colonoscopy

Colonoscopy, the gold standard for diagnosing and treat- ing colon issues, requires inserting a flexible endoscope into the colon. Skilled handling is crucial to navigate the colon’s delicate structure and avoid complications like tissue damage or perforation, and to limit patient dis- comfort. Measuring contact forces during colonoscopy can enhance safety and comfort during the procedure [1]. However, incorporating sensors in the endoscope is challenging due to space constraints and safety concerns. Pneumatic-based force sensors are particularly suitable for sterile medical environments due to their affordable cost, intrinsic safety, broad sensing range, fast response, and lack of electrical risks [2]. In this work we present a novel disposable pneumatic-based force sensor consist- ing of multiple sensing patches. The system can provide an estimate of the contact force between endoscope and colon. The integration of such sensors in clinical practice could be a pivotal step in enhancing the safety and comfort of colonoscopy procedures.