The research of acoustic diagnosis and noninvasive therapy for intractable pneumothorax

研制了一种记录肺音的双通道听诊器系统。听诊器系统由一对听诊器，即两个由胸片包围的麦克风，2声道数字录音机和声音分析软件组成。一例自发性气胸患者，塌陷侧呼吸音减弱，漏音不明显。在完全塌陷的一侧，检测到心脏或主动脉音。在肺部手术后的支气管瘘或胸膜瘘中，在分析软件分析的声谱图上检测到类似支气管哮喘患者喘鸣的横线。在崩塌的一侧检测到声谱图上的附加波。这种声音可能是由肺部膨胀引起的。

A two-channel stethoscope system that records lung sounds was developed.The stethoscope system consisted of a pair of stethoscopes, namely two microphones each surrounded by chest piece, 2 channel digital voice recorder and sound analysis software. In a spontaneous pneumothorax patient, respiratory sound on the collapsed side was reduced, however the leaking sound was not detected clearly.On the completely collapsed side, heart or aortic sound were detected. In the bronchial fistula or pleural fistula after the lung surgery, transverse lines similar to wheeze recorded in bronchial asthma patient were detected on the sound spectrogram analyzed by analysis software. And additional wave on the sound spectrogram was detected on the collapsed side. This sound might be produced by inflating lung.