Remote detection of gastroesophageal reflux using an impedance and pH sensing transponder

In this work, we developed a dual-sensor system to monitor the symptoms in gastroesophageal reflux disease (GERD). The system consists of an implantable transponder and an external reader. The passive telemetry for signal transduction is based on an inductive link between two coil antennas. The read...

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Bibliographic Details
Main Authors: Hung Cao, Landge, Vaibhav, Thakar, Shreyas, Rao, Smitha, Lun-Chen Hsu, Shou-Jiang Tang, Spechler, Stuart, Tibbals, H. Fred, Chiao, J.-C.
Format: Conference Proceeding
Language:English
Subjects:
Biomedical monitoring
Dual-sensor
Generators
GERD
impedance sensor
Implants
Monitoring
passive telemetry
pH sensor
Radio frequency
Switches
wireless sensor system
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Summary:In this work, we developed a dual-sensor system to monitor the symptoms in gastroesophageal reflux disease (GERD). The system consists of an implantable transponder and an external reader. The passive telemetry for signal transduction is based on an inductive link between two coil antennas. The reader supplies radio frequency power, obtains and stores the backscattered sensory data. The dual-sensor transponder detects both impedance and pH changes associated with the gastroesophageal reflux episodes and sends load-modulated signals back. Bench-top experiments were conducted to examine the robustness of the wireless transponding system. Preliminary in vivo experiments were conducted with a live pig. Our dual-sensor transponder system has successfully demonstrated its capability for effective GERD symptom monitoring.
ISSN:0149-645X
2576-7216
DOI:10.1109/MWSYM.2012.6259359