Soft robotic pump helps food and drink through the oesophagus

Developed by a team at Vanderbilt University in Nashville, Tennessee, the soft-robotic prototype is driven by strong magnets controlled by a wearable external actuator and can aid patients suffering from blockages caused by tumours or those requiring stents.

Traditional oesophageal stents are metal tubes used in patients with oesophageal cancer. These patients risk food being blocked from entering the stomach, potentially causing a situation where food enters the lung instead.

Restoring the natural motion of peristalsis, the wavelike muscular function that takes place inside tubular human organs, ‘paves the way for next-generation robotic medical devices to improve the quality of life especially for the ageing population,’ researchers wrote in a new paper in Advanced Functional Materials.

The study was led by Xiaoguang Dong, Assistant Professor of Mechanical Engineering. This work was done in collaboration with Vanderbilt University Medical Center colleague, Dr. Rishi Naik, Assistant Professor of Medicine in the Division of Gastroenterology, Hepatology and Nutrition.