フレキシブル基板を用いた胸部表面振動計測装置の開発

抄録

　　　Multichannel heart motion sensors using flexible circuits were fabricated for the monitoring the heart motion in the heart diseases. In this study, the PVDF sensors were used as the heart motion sensors. These sensors were modified with the air gap and the protection sheet, and the sensors with the flattest frequency response were selected. These selected modified sensors were preliminary used in a 4-channel sensor array in order to check whether the heart sounds were detected, and they precisely detected the motion of S1 and S2. Furthermore, 80 sensors were used for the multichannel sensor array using the flexible printed circuits. By using this 80-channel sensors array, the vibrations of the chest surface were measured and analyzed. As a result, this multichannel sensor array could measure the heart sound and detected a sound distribution of the chest surface. It was concluded that our developed measurement system could be applied to inspect heart diseases employing a digital database management of the auscultation examination.