DEVELOPMENT OF BLOOD PRESSURE DATA ACQUISITION SYSTEM MAKING USE OF THE TECHNOLOGY TO REALIZE THE ENVIRONMENT OF INNER HUMAN BODY AT OUTSIDE HUMAN BODY

利用该技术实现体外了解人体内部环境的血压数据采集系统的开发

• 批准号: 12555063
• 负责人: KANEKO Shigehiko
• 金额: $ 8万
• 依托单位: THE UNIVERSITY OF TOKYO
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2000
• 资助国家: 日本
• 起止时间: 2000 至 2002
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-12555063/
• 关键词: FLOW-INDUCED VIBRATION; COLLAPSIBLE TUBE; BLOOD PRESSURE METER; BIOINSTRUMENTATION; BLOOD PRESSURE MEASUREMENT; DATA ACQUISITION; SIMULATION; WAVELET TRANSFORMATION

This study is concerned with the mechanism of blood pressure measurement and the argument on the accuracy of the measured results. First, we designed and machined an equipment to simulate precisely the behavior of the pressure pulsation and the vibration characteristics of blood vessel of an upper arm of a human body during blood pressure measurement. Experimental parameters we mainly focused on are average pressure level, amplitude of pressure pulsations and the range of observed blood vessel vibrations i.e. the initiation and vanishing point of vibration and corresponding average blood pressure level.We also developed computer code to simulate the behavior of the blood vessel precisely based on the physical model of the collapsible tube taking account of the effect of rigidity of the tube. Comparisons between calculated and experimental results are made and the reasonable agreement is obtained. In addition, we conducted a basic research to develop the method of calculation concerned with fluid structure interaction between thin flexible structure and the flowing fluid where non-linearity of the fluid force is first treated and the limit cycle oscillation is first derived by calculation. This method is anticipated to become a tool to analyze the dynamic characteristics of blood vessels and vane in near future.

本文对血压测量的机理和测量结果的准确性进行了讨论。首先，我们设计并加工了一种设备，以精确模拟血压测量过程中人体上臂血管的压力脉动和振动特性的行为。实验参数主要包括平均压力水平、压力脉动幅度和血管振动范围，即振动的起始点和消失点以及相应的平均血压水平，并根据可折叠管的物理模型，考虑了管的刚度效应，开发了计算机程序，对血管的行为进行了精确模拟。将计算结果与实验结果进行了比较，取得了较好的一致性。此外，我们进行了基础研究，发展了薄柔性结构与流动流体之间的流固耦合的计算方法，其中首次处理了流体力的非线性，并首次通过计算导出了极限环振荡。该方法有望在不久的将来成为分析血管和叶片动态特性的工具。

项目成果

Shigehiko Kaneko and Xiaoshan Wu: "Leakage Flow Induced Sheet Flutter Analysis Using Discretized Beam Elements"Trans. JSME, Ser. C. 68, No.675. 3314-3321 (2002)

Shigehiko Kaneko和Xiaoshan Wu：“使用离散梁单元的泄漏流引起的板颤振分析”，翻译。

Shigehiko KANEKO, Xiaoshosan Wu: "Sheet Flutter Analysis Based on Multibody Dynamics"ASME 6th Biennial Conference on Engineering Systems Design and Analysis. AMP-118:(CD-ROM). (2002)

Shigehiko KANEKO、Xiaoshosan Wu：“基于多体动力学的板材颤振分析”ASME 第六届工程系统设计与分析双年会。

Shigehiko Kaneko and Xiaoshan Wu: "Nonlinear Analysis of Sheet Flutter Based on Multibody Dynamics"Proc. ACMD'02. 486-493 (2002)

金子茂彦、吴晓山：“基于多体动力学的板材颤振非线性分析”Proc.

Shigehiko Kaneko, Yasuhiro Yoshizawa and Hiroki Fukudome: "Self-excited Oscillation of a Collapsible Tube Simulating Blood Vessel"Prep. JSME. No.00-1(I). 251-252 (2000)

Shigehiko Kaneko、Yasuhiro Yoshizawa 和 Hiroki Fukudome：“模拟血管的可折叠管的自激振荡”准备。

Xiaoshan WU, Shigehiko KANEKO: "Nonlinear Analysis of Sheet Flutter Subjected to a Leakage Flow Based on Multibody Dynamics"JSME International Journal, Ser.C. Vol.46, No.2. 1-8 (2003)

吴晓山，金子茂彦：“基于多体动力学的泄漏流下板材颤振的非线性分析”JSME 国际期刊，Ser.C。