J-042
A New Type of Capsule Medical Micropump
Authors: Shuxiang GUO *1, Koichi SUGIMOTO *1 , Toshio FUKUDA *2 and Keisuke
OGURO *3
Affiliation: *1 Dept. of Intelligent Mechanical Systems Engineering, Kagawa University,
1-1 Saiwai-cho, Takamatsu 760-8526, JAPAN.
*2 Dept. of Micro System Engineering, Nagoya University, 1 Furo-cho, Chikusa-ku,
Nagoya 464-01, JAPAN.
*3 Osaka National Research Institute, AIST, 1-8-31 Midorigaoka, Ikeda, Osaka 563,
JAPAN.
Abstract
In this paper, we propose a new type of capsule micropump using an ICPF (Ionic Conducting
Polymer Film) actuator as the servo actuator. This micropump consists of two active
one-way valves which make use of the same ICPF actuator, and a tank. The overall
size of this micropump prototype is 13mm in diameter and 23mm in length. The actuating
mechanism is as follows. (1) The ICPF actuator as the diaphragm is bent into anode
side by application of electricity. Then the volume of the pump chamber increases,
resulting in the inflow of liquid from the tank to the chamber. (2) By changing
the current direction, the volume of the pump chamber decreases, resulting the liquid
flow from the chamber to the outlet. (3) The ICPF actuator is applied with a sine
voltage, the micropump provides liquid flow from the tank to the outlet. Characteristic
of the micropump is measured. The experimental results indicate that the micropump
has the satisfactory responses.
Shuxiang GUO (PH.D, Associate Professor)
Intelligent Mechanical Systems Eng'g Dept.
Fac. of Engineering, Kagawa University
1-1 Saiwai-cho,Takamatsu, 760-8526, JAPAN
Tel:+81-87-832-1672 Fax:+81-87-832-1658
guo@eng.kagawa-u.ac.jp