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Appliance for the oscillometric analysis of the impedance of the respiratory tract
Appliance for the oscillometric analysis of the impedance of the respiratory tract
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机译:用于呼吸道阻抗示波分析的设备
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摘要
An apparatus for determining the impedance (Zaw) of a patient's respiratory tract, by measuring the alternating pressure (dp) in the region of the patient's mouth after producing an oscillating air pressure signal, includes a mouthpiece, an electroacoustic transducer having a mechanical oscillation system for generating the oscillating air pressure signal, a tube for connecting the electroacoustic transducer to the mouthpiece, a reference resistance for determining the reference impedance (Zref), and a computing device for calculating the impedance (Zaw) of the respiratory tract on the basis of the reference impedance (Zref) of the reference resistance, the entire impedance (Zges) and the entire phase angle (Phi). The change in the deflection of the mechanical oscillation system on the electroacoustic transducer, caused by the alternating pressure (dp) of the breathing of the patient, can be measured in a contactless manner using at least one measuring device.
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机译:一种通过在产生振荡的气压信号后测量患者口腔区域中的交变压力(dp)来确定患者呼吸道阻抗(Z aw Sub>)的设备,该设备包括吹嘴,具有用于产生振荡的气压信号的机械振荡系统的电声换能器,用于将电声换能器连接到烟嘴的管,用于确定参考阻抗的参考电阻(Z ref Sub>)和计算用于基于参考电阻的参考阻抗(Z ref Sub>)计算呼吸道阻抗(Z aw Sub>)的设备,整个阻抗(Z ges Sub>)和整个相位角(Phi)。可以使用至少一个测量装置以非接触方式测量由患者呼吸的交变压力(dp)引起的电声换能器上机械振荡系统的挠度变化。
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