1998 Fiscal Year Final Research Report Summary
System study of linear motor-driven artificial heart
| Project/Area Number |
09490015
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
広領域
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| Research Institution | Shinshu University |
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Principal Investigator |
YAMADA Hajime Shinshu Univ., Faculty of Engineering, Professor, 工学部, 教授 (70020972)
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| Co-Investigator(Kenkyū-buntansha) |
MATSUURA Yuichiro Hiroshima Univ., School of Medicine, Professor, 医学部, 教授 (80190403)
MIZUNO Tsutomu Shinshu Univ., Faculty of Engineering, Assistant Professor, 工学部, 助手 (90283233)
WAKIWAKA Hiroyuki Shinshu Univ., Faculty of Engineering, Associate Professor, 工学部, 助教授 (50240461)
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| Project Period (FY) |
1997 – 1998
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| Keywords | Artificial heart / Linear motor / Linear pulse motor / Linear sensor / Magneto-resistive element / Linear artificial heart |
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| Research Abstract |
(1) Linear motor
Linear motor, No. AHA98-B, which was a key component of artificial heart, was designed and manufactured based on collaborated research with Shinko Electric Co. Ltd. Mover and stator of the linear motor were made of the permendure with high flux saturation density, it was capable of mounting for a small-sized linear sensor. The linear motor has 0.23 litters of the volume, 1.6 kilograms of the mass, it was possible to generate high linear thrust of 105 newtons at 6.5 watts of the input power.
(2) Linear sensor
Small-sized linear sensor using magneto-resistive elements was made based on collaborated research with Sankyo Seiki Co., Ltd. The small-sized linear sensor was used a pair of magneto-resistive element with 3 mm X 4 mum of the area. The linear sensor had the measuring range of 30 mm, the resolution of 0.2 mm.
(3) Artificial heart having a linear servomotor
Linear servomotor for artificial heart including the above linear motor and linear sensor was achieved. The linear servomotor had the stroke of 20 mm, kinetic thrust of the linear servomotor had 90-70 newtons at the pulsating range from 80 to 130 beats per minute, it was enough to operate the blood pump. The kinetic thrust of the linear servomotor had 50-30 % higher the ordinary linear motor without feedback. More powerful linear artificial heart than the ordinary linear artificial heart was completed based on the results of the research.
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