METHOD AND APPARATUS FOR THE EXECUTION OF A GASTRO-ESOPHAGEAL PHMETRIC TEST

摘要

An apparatus for the execution of a gastro-esophageal pHmetric test, particularly for pH monitoring throughout 24 hours, avoiding patient hospitalization and allowing the latter to continue normal life habits. It comprises a pHmetric electrode opportunely positioned in the patient's esophagus and/or stomach and a portable recording unit of very small dimensions, that is given to the patient to be tested, connected to said electrode. The recording unit comprises voltage-frequency converter that receives a DC signal from the electrode and produces a frequency signal proportional to the amplitude of the input signal; it also comprises a timer connected between said converter and a recording device, for enabling the frequency signal to be transferred to said device and simultaneously for actuating the same in correspondence with prefixed sampling intervals. The apparatus comprises finally a unit for analysing said frequency signal and visualising the test results.