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The Development of Totally Implantable Artificial Heart System

全植入式人工心脏系统的研制

基本信息

批准号：
62870052
负责人：
ATSUMI Kazuhiko
金额：
$ 23.49万
依托单位：
University of Tokyo
依托单位国家：
日本
项目类别：
Grant-in-Aid for Developmental Scientific Research
财政年份：
1987
资助国家：
日本
起止时间：
1987 至 1988
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-62870052/
关键词：
Artificial heart Blood pump Driving unit Artificial valve Control of artificial heart Energy transmission Solar battery 太陽電池

项目摘要

The objective of this sudy is to perform the basic study for implantation of the whole system of artiticial heart(AH) which includes a blood pump, driving unit, control system, measurement system and energy source. The followeng outputs were obtained as the result of 2 years research.1. Driving unit A driving unit used brushless DC pulse motor was developed. The revolution of the motor was converted to linear motion by a ball screw. An ultrasonic motor was also examined. As a new driving mechanism, a driving unit utilizing liquid gas was designed.2. Blood pump A mechanically driven blood pump with new mechanism was developed. The pump has a free diaphragm which has also inflow valve function and need not a compliance chamber. A new artificial valve(jellyfish valve) for AH casted by segmented polyurethane was developed, which had as good as performance with Bjork-Schiley valve.3. Energy source and its transmission system As an energy source for Ah, a wearable solar battery in which a series of amorphous silicon solar batteries are mounted on a white robe, was developed. 7.6 watts of electric energy could be generated. Transcutaneous energy transmission system with 78 % of transmission efficiency was also developed.4. Control metod An automatic control system of Ah during exercise was developed. The acceleration was measured to estimate the strength of exercise, and the Ah output was controlled along with an output curve memorized in a computer. The system worked well in in-vivo experiment.5. New technology and concept The inducement of micromachine technique to Ah field and the new concept of Ah utilizing this techique was discussed.

本研究的目的是为植入包括血泵、驱动单元、控制系统、测量系统和能量源在内的整个人工心脏（AH）系统进行基础研究。经过2年的研究，取得了以下成果.驱动单元采用无刷直流脉冲电机作为驱动单元。电机的旋转通过滚珠丝杠转换成直线运动。超声波电机也进行了检查。作为一种新的驱动机构，设计了液化气驱动单元。血泵研制了一种新型机械驱动血泵。该泵具有自由隔膜，该自由隔膜还具有流入阀功能，并且不需要顺应腔。研制了一种新型的人工瓣膜（水母瓣），采用分段式聚氨酯浇注而成，其性能与Bjork-Schiley瓣膜相当.能源及其传输系统作为Ah的能源，开发了将一系列非晶硅太阳能电池安装在白色长袍上的可穿戴太阳能电池。7.6可以产生瓦特的电能。研制了经皮能量传输系统，传输效率达78%.控制方法：研制了一套运动过程中Ah的自动控制系统。测量加速度以估计运动的强度，并且沿着存储在计算机中的输出曲线控制Ah输出。该系统在体内实验中运行良好.新技术新概念论述了微机械技术对AH场的诱导作用以及利用微机械技术的AH新概念。