Sensor for Pressure Measurement in Pleural Cavity

Abstract

This diploma thesis deals with the design of a system designed to measure the pressure in the pleural cavity. The anatomy and physiology of the cavity are discussed in the introduction. Subsequently, current solutions drawn from the available literature are presented. Then the design and selection of the measuring chain are described and suitable solutions in terms of shape and material are selected. Next, four methods of testing the created measuring balloons connected to the measuring chain are presented. The first of the experiments tested the maximum measurable respiratory rate. The second test shows how sensitive the measuring chain is to pressure changes. In the third test, the measuring balloons are subjected to a practical test, in which the balloons are inserted into an artificial lung connected to a ventilator and the task of the measuring chain is to capture the breathing curve. The last experiment was to test the self-made physical model and to test the measuring ability of the balloon. For each of the tests, the statistical results of the measurements are presented, which show the agreement of the actual and measured pressure, and the mutual correlation between the input breath curve and the measured curve.