永久磁石を用いた三次元位置センサの開発とその応用

概要

論文の詳細を見る
In recent years, the number of patients complaining of abnormal bowel movements has increased, and the incidence of abnormal bowel movements in the Japanese population over the age of 15 years old has been estimated to have increased to approximately 20%. Clarification of the intestinal peristalsis of the digestive tract is important for elucidating the pathology of digestive disorders. Existing assessment systems have problems with quantification and reproducibility. With this background, the present study was conducted to develop a system for analyzing intestinal peristalsis using three-dimensional (3D) position sensors. By creating 3D position sensors out of permanent magnets, we were able to directly measure the movements of intestinal contents and assess the state of intestinal peristalsis using strain gauges attached to the intestinal wall. The results of in vitro experiments showed that the maximum measurement error was 6.5mm within 250mm of the sensor. A preliminary animal study was conducted using wired position sensors. Radiographic findings showed that the sensors detected the movement of the intestinal contents, and the movement detected by the sensors correlated with the output of the strain gauges attached to the intestinal wall.
社団法人日本生体医工学会の論文
2004-12-10