Name of invention: Airway resistance measurement technology and device under dynamic airway pressure. Technical field: Used for clinical detection of small airway pathological changes in patients. BACKGROUND TECHNOLOGY: Forced oscillation airway resistance measurement is another developed method for measuring airway resistance in the lung. This method has a more detailed description and classification of small airway resistance. Content of the invention: The airway resistance of the subjects was measured under fixed or varying airway pressure (5cmH_2 to 10cmH_2). According to the measured data and curves, the normal, pathological and pathological parts of the small airway were classified and diagnosed according to the classification results. The invention features: the applied airway pressure has the ability to influence the obvious resistance of the desired airway, the negative pressure can make the small airway close ahead of time, and the positive pressure can avoid the collapse and closure of the small airway. The degree of small airway lesion was determined according to the effect of airway pressure on small airway. Clinical Significance: To provide a more detailed description of the physiological status of small airway testing tools for clinical medical staff, more quickly to provide medical staff with treatment feedback information.
【技术实现步骤摘要】
动态气道压力下气道阻力测定技术和装置
此技术和装置使用于临床对患者小气道病理变化的检测。
技术介绍
此检测技术是基于强迫振荡气道阻力测定技术之上开发出的另外一种气道阻力测定方法。现有的强迫振荡气道阻力测定技术是在受试者的气道内施加一定气体振荡压力，传感器检测在压力的作用下产生的气体流速改变，根据气体流速模式的改变确定气道阻力的大小以及阻力成分（粘性阻力、弹性阻力、惯性阻力，并且，粘性阻力称之为阻力，在弹性阻力和惯性阻力又被称之为阻抗），根据阻力以及阻力成分以及阻力、阻抗与频谱的关系、阻力与阻抗之间的夹角对不同种类的疾病并做出诊断。现有的测定方法是零气道压力、多频点阻力测定，而此专利技术采用单一频点、渐变气道压力条件下阻力测定技术。
技术实现思路
此专利技术装置由8部分组成，见图1：1.动态气道压力发生部分由连续旋转的涡轮风机构成。通过控制风机电动机的旋转方向和旋转速度设定动态气道压力2.强迫振动压力部分由一个喇叭的前后振动产生一个固定频率、固定波动压力3.流速传感器由差压式流速感应器件构成4.由电子元器件构成对流速信号的放大和信号处理部分5.计算机以及操作软件用于控制...
【技术保护点】
1.动态气道压背景下气道阻力、阻抗测试。
【技术特征摘要】
1.动态气道压背景下气道阻力、阻抗测试。2.涡轮动态气道压发生器。3.阻力/压力反应曲线阻力-压力关系曲线。4.阻抗/压力反应曲线阻抗-压力关系曲线。5.合成总阻力/压力反...
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