Development of a measuring system monitoring movements of internal organs

本研究的目的是一个PC系统的发展，检测和测量的振动起源于胃和/或呼吸运动，通过使用小而轻的加速度传感器放置在身体表面。该系统使我们能够代替听诊器长时间测量和/或监测并记录他们的运动，而不会给患者带来负担。该系统的优点之一是具有分析记录和掌握病人病情的功能。以下是目前监测（1）胃运动和（2）呼吸运动的研究结果。（1）胃的运动：胃是位于贲门和幽门之间的消化器官。该系统可以检测由食欲块流入和流出胃的信号，从传感器位于身体表面附近的器官的两个门。当消化时，胃的蠕动运动已知有一个周期，从每分钟两到四次。（2）呼吸运动：COPD患者膈肌运动功能下降。该系统的目的之一是通过胸部的身体表面上的传感器来检测运动的信号。然而，由于呼吸运动信号覆盖了膈肌运动信号，系统不能清楚地检测到膈肌运动信号。另一种检测方法是尝试获取膜片的信息。

The aim of this research is a development of a PC system to detect and measure the vibration originated from stomach and/or respiratory movements by use of small and light acceleration sensors placed on the body surface. This system is enable us to measure and/or monitor and to record their movements in place of a stethoscope for a long time not burdening patients. One of advantage of this system is a function to analyze the records and to grasp the condition of patient. The followings are the results of the research for monitoring (1) stomach movements and (2) respiratory movements at the present.(1)Stomach movement :The stomach is a digestive organ between the cardia and the pylorus. This system can detect the signal made by appetite lump flowing in and out the stomach from the sensor located on the body surface near both gates of the organ. When digesting, the peristalsis movement of the stomach is known to have a cycle from two to four per a minute. It is also confirmed that the senor located on the body surface near the navel can detect the signal of the movement(2)Respiratory movement :Patients of COPD are known to decline the function of diaphragm movement. One of aims of this system is to detect the signal of the movement by the sensor on the body surface of the chest. However, the system cannot clearly detect the signal of diaphragm movement since the signals of respiratory movement cover that of diaphragm one. Another way of detecting is tried to get information of diaphragm one.