The research of acoustic diagnosis and noninvasive therapy for intractable pneumothorax

研制了一种双通道肺音听诊器系统，该系统由一对听诊器，即两个麦克风，每个麦克风被胸片包围，双通道数字语音记录器和声音分析软件组成。 1例自发性气胸患者，塌陷侧呼吸音减弱，漏音不清，完全塌陷侧可听到心音或主动脉音。在肺部手术后的支气管瘘或胸膜瘘中，通过分析软件分析的声谱图上检测到类似于支气管哮喘患者记录的喘鸣的横向线。在塌陷侧的声谱图上检测到附加波。这种声音可能是肺充气时发出的。

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.