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Development of Implanted Microprocessor-Based Biosignal Monitoring System and Direct Recording of Biosignal inside the Body

开发植入式微处理器生物信号监测系统并直接记录体内生物信号

基本信息

批准号：
03671083
负责人：
MAKIKAWA Masaaki
金额：
$ 0.32万
依托单位：
Osaka University
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (C)
财政年份：
1991
资助国家：
日本
起止时间：
1991 至 1992
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-03671083/
关键词：
biosignal microprocessor ambulatory monitoring implantation マイクロコンピュ-タ

项目摘要

Inside the body there exist many kinds of bioelectric signal such as neuron impulse or the biomechanical signal such as blood flow velocity, and the direct recording of these signals is very important for the investigation of the biomechanism or the cause of disease.The goal of this study is to develop an implanted microprocessor-based biosignal monitoring system constituting of minimum elements necessary to record biosignals such as sensors, stimulation electrode, memories, microprocessor and communication interface, and to establish the method to record and analyze biosignals occurring inside the body.To realize this implanted biosignal monitoring station the condition which this implanted system should have has been inverstigated in this study. The main problem is whether the computer system implanted inside the body and sleeping for the power down can be controlled by the host computer outside the body through infra-red communication or not.Results show that the isolated computer system can be perfectly controlled through serial communication such as the download of monitoring program, the upload of the recorded data and the check of the peripheral circuits. The consumption of current is about 1mA when this system is sleeping. The size can be downsized by the surface mount technique into the name card size.Moreover this system developed here was clarified to be used as an ambulatory monitoring device. Here an ambulatory monitoring of the heart rate, the physical activity and the posture can be successfully recorded in daily life.

在人体内存在着多种生物电信号如神经冲动或生物力学信号如血流速度，这些信号的直接记录对于研究生物力学或疾病的原因是非常重要的，本研究的目的是开发一种植入式微处理器生物信号监测系统，该系统由最少的传感器、刺激电极、存储器、微处理器和通信接口，建立了记录和分析体内生物信号的方法，并探讨了实现这种植入式生物信号监测站所应具备的条件。研究的主要问题是植入体内的计算机系统是否可以通过红外通信被体外的主机控制，通过串口通信可以很好的控制隔离的计算机系统，包括监控程序的下载、记录数据的上传和外围电路的检查。系统休眠时的电流消耗约为1mA。通过表面贴装技术，可以将尺寸缩小到名片大小，并明确了本系统可作为移动监护设备使用。在这里，可以成功地记录日常生活中的心率、身体活动和姿势的动态监测。