一种基于ARM系统的多频耳声导抗测试系统的研究  

Research on multiple frequency tympanometry on ear system based on ARM

作　　者：王立伟[1] 李跃杰[1] 

机构地区：[1]中国医学科学院生物医学工程研究所,天津300192

出　　处：《医疗卫生装备》2008年第1期3-5,共3页Chinese Medical Equipment Journal

摘　　要：目的:研究多频探测音对某些单一低频耳导抗测试所不敏感病变的鉴别(如:传导链中断,耳硬化症等)。方法:在原有单一低频SY-IA声阻抗中耳功能分析仪的基础上,重点对多频探测音产生电路、恒压声控系统、微处理器控制系统及多频声导抗及相位角检测电路进行了研究与设计。结果:运用多频耳声导抗测试系统可以分别在不同频率探测音下对正常耳、鼓膜松弛耳和听骨链中断耳进行声导抗检测和相位角检测。结论:实验结果表明,基于ARM系统的多频耳声导抗测试系统可以为某些单一低频耳声导抗测试所不敏感病变的鉴别提供进一步的临床依据。Objective To study a multiple frequency tympanometry on ear system. Methoda Based on the original low frequency and single ingredient SY-IA tympanometry, the study mainly focused on such aspects as multiple frequency probe tone circuit, constant pressure sound control system, micropressor control system and multiple frequency acoustic immitance ＆ phase angle detection circuit. Remalta Multiple frequency tympanometry on ear system could detect multiple frequency acoustic immitance and phase angle for normal ear, tympanum loosed ear and ossicular chain break ear under different probe tone. Conclumion Experiments show that multiple frequency tympanometry on ear system based on ARM is helpful to the diagnosis of pathological changes which are insensitive to single low frequency tvmpanometrv.

关 键 词：声导抗测量 多频 探测音 中耳 

分 类 号：R764[医药卫生—耳鼻咽喉科]