Experiment device for measuring real human body upper respiratory tract model flow field pressure

Abstract

The invention discloses an experiment device which can be used for measuring the size and the change of the pressure of different positions in a human body upper respiratory tract model flow field under the two conditions of a steady state and a transient state. The experiment device comprises a real human body upper respiratory tract model, a gas path system and a pressure detecting system. The real human body upper respiratory tract model comprises an oral cavity part, a uvula part, a pharyngeal part, a epiglottis part, a laryngeal part, a glottis part, a pyriform sinus part, a trachea part and a front three-level bronchus part. The gas path system is composed of a first vacuum air path and a second vacuum air path. The pressure detecting system is composed of pressure probes, a data collecting system and a computer. The pressure probes are arranged at different portions of the real human body upper respiratory tract model in an imbedded mode. The data collecting system is respectively connected to the pressure probes and the computer. The experiment device for measuring the real human body upper respiratory tract model flow field pressure can be used for more precisely measuring the motion features of the human body upper respiratory tract model flow field and can display the size and the change conditions of the pressure of different positions in a human upper respiratory tract in real time.

Description

Technical field [0001] The invention relates to the technical fields of biomedical engineering and respiratory fluid mechanics, and specifically relates to a measuring experimental device suitable for measuring the flow field of a human upper respiratory tract model. Background technique [0002] Pressure detection technology is a technology used to measure the size and change of pressure in a micro system. It was originally designed to directly measure the turgor pressure of giant algae cells. With the further miniaturization and precision of the operating device, it was later applied to determine the turgor pressure of ordinary higher plant cells and other water relationship parameters. The development of this technology is based on a series of corresponding fluid physics theories. At present, the pressure probe technology has become a multi-purpose technology in the field of plant physiology and ecology, which can directly measure the pressure in the catheter or tracheid. [...

AI Technical Summary

Problems solved by technology

At the same time, the structure of the upper airway of the human body is relatively complex, and its shape is extremely irregular. It is extremely difficult to measure the pressure of different positions in the upper airway in the real human body.

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