Smart capsule analyzes gut bacteria

Engineers at Purdue University have developed a 3D printed capsule that samples GI tract microbes and fluids as it passes from the stomach through the intestines. “The technology consists of a resin pill-like device that has a pH sensitive tip. When the capsule reaches an area of the gut with the appropriate pH level, the cap dissolves and allows intestinal fluid to come in. Inside, a hydrogel absorbs the liquid and expands. This expansion causes a plug to push against the opening where the cap was and seals off the capsule. Once excreted, the capsule can be unscrewed and the sample removed using a pair of tweezers.” MORE

Image Credit:   Purdue University and MedGadget. com