Embedded Soft Inductive Sensors to Measure Arterial Expansion of Tubular Diameters in Vascular Phantoms

Measuring diameter change in flexible tubular structures embedded opaque material is challenging. In this article, we present a soft braided coil an elastomer tube as method to continuously measure such diameter. By measuring the inductance coil, estimate instantaneous with simple model. applying method, demonstrate that waves vascular phantom, model of radial artery viscoelastic wrist structure, can be recorded continuously. Four sensors were made, and their ability physiologically relevant simulated pulse was assessed. Several pressure profiles generated using precision digital pump. Inductance measured simultaneously optical laser/mirror deflection measurement. One sensor then phantom human wrist. The via ultrasound estimated from measurements. estimates corresponded well comparator both experimental setups. We our viable alternative recording models. This opens opportunities empirical investigations interesting fluid-structure interaction. provide new changes systems where access obstructed.