Design and Fabrication of the Wireless Systems for Pressure Monitoring Systems in the Gastro-Intestinal Track

YeonKwan MOON  JyungHyun LEE  HeeJoon PARK  JuGab LEE  JaeJong RYU  ChulHo WON  JungHee LEE  JinHo CHO  HyunChul CHOI  

IEICE TRANSACTIONS on Information and Systems   Vol.E89-D   No.7   pp.2294-2300
Publication Date: 2006/07/01
Online ISSN: 1745-1361
DOI: 10.1093/ietisy/e89-d.7.2294
Print ISSN: 0916-8532
Type of Manuscript: PAPER
Category: Biological Engineering
pressure monitoring systems,  wireless system,  transmitter,  helix,  in-vivo experiment,  

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Diseases in the gastro-intestinal track are becoming more prevalent. In order to diagnose a patient, the various signals of the digestive organ, such as temperature, pH, and pressure, can offer helpful information. The variation of a pressure signal of the gastro-intestinal track can offer information about digestive troubles or provide clues about diseases. This paper presents a wireless system for the pressure monitoring system, which includes a swallow-type pressure capsule and the external receiving system. A transmitter, a transmitting antenna (Helix), a receiver, and a receiving antenna (Loop) were designed and fabricated in consideration of the MPE, power consumption, system size, signal to noise ratio and modulation method. The wireless system designed and implemented for the pressure monitoring system was verified by in-vivo experiments. As a result, we found each organ has its own characteristic pressure fluctuation.