The content describes an experimental system developed by researchers at the University of Southern California's Viterbi School of Engineering that aims to provide a noninvasive way to monitor gastrointestinal (GI) gases associated with various digestive disorders.
The system consists of a wearable coil placed on a t-shirt and an ingestible pill with a 3D-printed shell. The pill is equipped with a gas-permeable membrane, an optical gas-sensing membrane, an optical filter, and a printed circuit board that houses its electronic components. The gas sensor can detect oxygen and ammonia levels.
Once the patient ingests the pill, a phone app connects to it via Bluetooth and sends a command to initiate the target gas and magnetic field measurements. The wearable coil generates a magnetic field, which is captured by a magnetic sensor on the pill, enabling its location to be decoded in real time. Using optical absorption spectroscopy, the system can then measure and map gases like oxygen and ammonia in 3D as the pill moves through the gut.
The researchers note that elevated levels of ammonia, which is produced by Helicobacter pylori, could serve as a signal for conditions like peptic ulcers, gastric cancer, or irritable bowel syndrome. They believe the ingestible system with the wearable coil offers a practical and compact solution for monitoring GI health, potentially empowering patients to conveniently assess their GI gas profiles from home.
The next step is to test the system in animal models to assess its performance in biological tissue and evaluate potential issues like sensor fouling or interference from GI liquids and food particles.
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by Marilynn Lar... : www.medscape.com 07-15-2024
https://www.medscape.com/viewarticle/fitbit-gut-may-aid-detection-gi-disorders-2024a1000cwwMélyebb kérdések