疑似咽喉反流病人pH监测的一个发展趋势是在原有的双探头上加一个下咽探头,但是因为人体食管长度不同,要准确放置下咽探头,同时准确地在食管下括约肌上方5cm放置远端探头存在一定的困难,也就是导管设计有困难。本研究的目的是设计、实施一个新的pH监测手段。设计一个三感受器的 A trend of pH monitoring in suspected pharyngolaryngeal patients is to add an oropharyngeal probe to the original double-probe, but because of the different length of the human esophagus, to accurately place the hypopharyngeal probe accurately placed 5cm above the esophageal sphincter distal Probe has some difficulties, that is, catheter design difficulties. The purpose of this study was to design and implement a new pH monitoring tool. Design a three-sensor