Respiratory diseases, including the cronic obstructive pulmonary disease (COPD) are among the leading causes of death worldwide. To date, there is no physical examination procedure that can quantify important parameters within a specific lesion area inside the lung. In this study, we propose a novel sensor probe system consisting of a basket forceps and 2 pressure sensors to simultaneously measure the expiratory airflow and the static pressure inside the pulmonary airway. A Pitot tube mechanism using 2 pressure sensors is introduced in the system for measuring both the physical quantities. Small fiber-optic pressure sensors with 0.3 mm diameter were utilized, and both the airflow rate and the static pressure characteristics were evaluated for obtaining the calibration curves. Finally, the proposed sensor system was implemented to measure both the airflow and pressure in an artificial ventilator and an experimental animal. The measurement of expired airflow and static pressure inside the airway of a rat with the diameter of 1.8 mm were demonstrated. © 2024 Institute of Electrical Engineer of Japan and Wiley Periodicals LLC.

中文翻译：

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用于同时测量肺气道内呼气的气流和压力的皮托管传感器探头系统

呼吸系统疾病，包括慢性阻塞性肺疾病（COPD），是全世界导致死亡的主要原因之一。迄今为止，还没有任何体检程序可以量化肺部特定病变区域内的重要参数。在这项研究中，我们提出了一种新型传感器探头系统，由篮子镊子和 2 个压力传感器组成，可同时测量呼气气流和肺气道内的静压。系统中引入了使用两个压力传感器的皮托管机构来测量这两个物理量。采用直径为 0.3 mm 的小型光纤压力传感器，评估气流速率和静压特性以获得校准曲线。最后，所提出的传感器系统被用来测量人工呼吸机和实验动物中的气流和压力。演示了直径为1.8 mm的大鼠气道内呼出气流和静压的测量。 © 2024 日本电气工程师协会和 Wiley periodicals LLC。