| Project/Area Number |
12680852
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Biomedical engineering/Biological material science
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| Research Institution | Suzuka University of Medical Science |
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Principal Investigator |
IKADA Yoshito Suzuka University of Medical Science, Faculty of Medical Engineering, Professor, 医用工学部, 教授 (00025909)
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| Co-Investigator(Kenkyū-buntansha) |
WAKABAYASHI Shigeharu WAKABAYASHI,Shigeharu, 保健衛生学部, 講師 (40191720)
IHARA Tadashi IHARA,Tadashi, 医用工学部, 教授 (70261039)
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| Project Period (FY) |
2000 – 2003
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| Project Status |
Completed (Fiscal Year 2003)
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| Budget Amount *help |
¥3,600,000 (Direct Cost: ¥3,600,000)
Fiscal Year 2003: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 2002: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 2001: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 2000: ¥2,100,000 (Direct Cost: ¥2,100,000)
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| Keywords | Artificial Muscle / Electroconductive Polymer / Sensor / Biomaterial / Polymer Electrolyte Membrane / Actuator / Graft / Isometric Tension / ポリマー / 人工心筋 / 生体適合性 / 電解質膜 / 医療器具 |
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| Research Abstract |
A prototype active graft was fabricated using solid polymer electrolyte membrane-Gold (SPM-Gold). SPM-GOLD graft was prepared by first heat-molding Nafion R-1100 resin into a half-pipe shape membrane. In separate preparations, a flat SPM-GOLD membrane was made from Nafion resin with preset thickness of 200-1000 μm. Isometric tension of SPM-GOLD membrane of varied width, length and thickness was measured with an isometric transducer (Ninon Kohden).
Isometric tension increased by 6.7 times at 800 μm as compared to the 200 μm membrane at 100 mA while this ratio decreased as larger current was applied. For example, at 100 mA, the tension is proportional to the power of 1.4 of the thickness, i.e., F=0.000545h^<1.4> at 200 mA, it is the power of 0.98 ; Fe.0.0121h^<0.98>. Tension, as measured by force in gram of force (gf) increased with increased current of up to 300 mA and subsequently flattened out, but continued to increase up to 500 mA.
Similarly, tension increased as the width of the membrane increased but not much change was observed with increased length of the membrane.
Generated tension in isometric measurements increased with the thickness to a degree that enables the use of the graft for airway assistance device and possibly for active aorta graft.
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