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鼻咽部压力增高致咽鼓管被动开放 ,外耳道压力亦发生相应变化。本仪器用压力传感器测得鼻咽部及外耳道的实时压力 ,可获得咽鼓管的被动开放压值 ;再经微处理器处理 ,打印出检查结果。
Increased pressure in the nasopharynx caused the eustachian tube to open passively, and the external auditory canal pressure changed accordingly. The instrument uses a pressure sensor to measure the real-time pressure of the nasopharyngeal and external auditory canal to obtain a passive open pressure value of the eustachian tube; it is then processed by the microprocessor to print the inspection result.