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KMID : 1137820060270040143
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의공학회지
2006 Volume.27 No. 4 p.143 ~ p.153
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A Study of Design of Hollow Fiber Membrane Modules for using in Artificial Lung by the PZT Actuator
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Kim Gi-Beum
Kim Seong-Jong
Hong Chul-Un
Lee Yong-Chul
Kim Min-Ho
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Abstract
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The purpose of this work was to assess and quantify the beneficial effects of gas exchange, while testingto the various frequencies of the sinusoidal wave that was excited by the PZT actuator, for patients suffering from acute respiratory distress syndrome (ARDS) or chronic respiratory problems. Also, this paper considered a simulator to design a hollow type artificial lung, and a mathematical model was used to predict a behavior of blood. This simulation was carried out according to the Montecarno’s simulation method, anda fourth order Runge-Kutta method was used to solve the equation. The experimental design and procedure are then applied to the construction of a new device to assess the effectiveness of the membrane vibrations. As a result, the vibration method is very effective in the increase of gas transport. The gas exchange efficiency for the vibrating intravascular lung assist device can be increased by emphasizing the following design features: consistent and reproducible fiber geometry, and most importantly, an active means of enhancing convective mixing of water around the hollow fiber membranes. The experimental results showed the effective performance of the vibrating intravascular lung assist device. Also, we concluded that important design parameters were blood flow rates, fiber outer diameter and oxygen pressure drop. Based on the present results, it was believed that the optimal level of blood flow rates was 200$cm^3$/min.
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KEYWORD
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artificial lung, PZT actuator, mass transfer, ARDS, hemolysis
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