Wireless, bioresorbable, passive sensor for continuous pH monitoring and early identification of stomach leakage

By Pooja Toshniwal PahariaApr 30 2024Reviewed by Lily Ramsey, LLM In a recent study published in Scientific Advances, researchers created a bioresorbable, cordless, passive sensor that monitors pH locally and detects stomach leakage early on.

Incorporating pH-responsive hydrogels into wireless electrical devices may be an effective engineering strategy. Mechanics models help inform decisions on the optimum hydrogel and circuit component geometries, particularly that of the sensor inductor. Systematic investigations in animals and device setups in vitro confirm the device's continuous pH monitoring ability.

The researchers defined the capacitor's top and bottom electrodes by laser-cutting Zn foil discs. The reading system consists of a VNA and a single-turn coil. Setting the VNA to reflective mode allows for measurements of the actual and virtual portions of the S-matrix element S11. Results The platform monitors gastric fluid leakage during the crucial risk phase after laparoscopic sleeve gastrectomy . It uses wireless readout coils to measure the sensor circuit's resonance frequency, which is affected by the surrounding biological fluid acidity.

Stomach Blood Diagnostics Frequency Hydrogel Implants Ion Surgery

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