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System study of linear motor-driven artificial heart

直线电机驱动人工心脏系统研究

基本信息

批准号：
09490015
负责人：
YAMADA Hajime
金额：
$ 7.42万
依托单位：
Shinshu University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
1997
资助国家：
日本
起止时间：
1997 至 1998
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09490015/
关键词：
Artificial heart Linear motor Linear pulse motor Linear sensor Magneto-resistive element Linear artificial heart

项目摘要

(1) Linear motorLinear 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 sensorSmall-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 servomotorLinear 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.

(1)直线电机直线电机，第AHA98-B是人工心脏的关键部件，是与新科电机株式会社合作研制的。直线电机的动子和定子都是用高磁通饱和密度的永磁体制成的，可以安装在小型线性传感器上。直线电机的体积为0.23升，质量为1.6公斤，在6.5瓦的输入功率下可以产生105牛顿的高线推力。(2)线性传感器在与三共精机株式会社合作研究的基础上，研制了一种使用磁阻元件的小型线性传感器。该小型线性传感器采用了一对面积为3 mm×4微米的磁阻元件。线性传感器的测量范围为30 mm，分辨率为0.2 mm。(3)实现了具有线性伺服电机的人工心脏直线伺服电机。直线伺服电机行程为20 mm，脉动范围为80~130次/min，动推力为90~70牛顿，足以操作血泵。直线伺服电机的动推力比无反馈的普通直线电机大50-30%。在此基础上完成了比普通线性人工心脏更强大的线性人工心脏。