Vibration Characteristics of Piezoelectric Lead Zirconate Titanate by Fluid Flow in Intravascular Oxygenator

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概要

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• In this paper, we describe the enhancement in oxygen transfer rate in hollow-fiber-membrane (HFM) modules using a plumbum piezoelectric lead zirconate titanate (PZT) actuator and a piezoelectric poly vinylidene fluoride (PVDF) sensor. We developed a vibrating intravascular lung assist device (VIVLAD) for patients having chronic respiratory problems and performed experiments on hydrodynamic flow through a bundle of sinusoidal vibrating hollow fibers. These modules were used to provide some insight into how wall vibrations might enhance the performance of an intravascular lung assist device. The experimental design and procedure are then applied to the fabrication of a device used to assess the effectiveness of membrane vibrations. The test section was a cylindrical duct with an inner diameter of 30 mm. The flow rate was controlled by a pump and monitored by a built-in flowmeter. The vibration apparatus was composed of a piezovibrator, a function generator, and a power amplifier. The direction of vibration was radial to the fluid flow. Gas flow rates of up to 6 L/min through 120-cm-long hollow fibers were achieved by exciting the piezovibrator. The time and frequency responses of PVDF sensors were investigated through various frequencies in VIVLAD. In these devices, the flow of blood and the source of oxygen were separated by a semipermeable membrane that allows oxygen and carbon dioxide to diffuse into and out of the fluid, respectively. Results of the experiments have shown that a vibrating intravascular lung assist device performs effectively.

• 2006-04-30

著者

• Kim Gi-beum

  Division Of Bionics And Bioinformatics College Of Engineering Chonbuk National University

• Hong Chul-un

  Division Of Bionics And Bioinformatics College Of Engineering Chonbuk National University

• Kwon Tae-kyu

  Division Of Bionics And Bioinformatics College Of Engineering Chonbuk National University

関連論文

• Vibration Evaluation and Gas Transfer of Distilled Water and Bovine Blood in Intravascular Lung Assist Device using PZT Actuator
• Vibration Characteristics of PZT Actuator by Fluid Flow in Intravascular Oxygenator
• Study on the Biosensor Using Surface Acoustic Wave sensor
• Design of an intravenous oxygenator
• Vibration Characteristics of Piezoelectric Lead Zirconate Titanate by Fluid Flow in Intravascular Oxygenator
• Basic Study to Develop Biosensors Using Surface Acoustic Waves

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