A Self-Test System of Automatic External Defibrillator

• Main Authors: Chun-Yi Lin, 林俊逸
• Other Authors: Cheng-Lun Tsai
• Format: Others
• Language: zh-TW
• Published: 2013
• Online Access: http://ndltd.ncl.edu.tw/handle/71645059372586707765

碩士 === 中原大學 === 生物醫學工程研究所 === 101 === An automatic external defibrillator is a portable first-aid medical device. It delivers a large current through the chest to shock the heart to terminate heart fibrillation. This defibrillation treatment has been proved to be effective in saving patient from sudden cardiac arrest. Therefore, public access defibrillator programs are promoted in many countries to widely place defibrillators at different public places. Public access defibrillators are generally in standby state, but they should be always ready to work in case of emergency. However, there are many defibrillators have been recalled for possible malfunctions that might be caused by defective parts. In this study, an embedded self-test system of defibrillator is developed for routinely testing its major components to save maintenance cost and to make sure the defibrillator is free from failure. The self-test items of defibrillator includes: battery voltage, speech synthesis circuit, sound recording circuit, event recording, electrode pads, ECG circuit, charging and discharging circuit. Each part has its own specificity and requires special design of its testing procedure. If any item fails its test, the defibrillator will flash a light and beep to attract attention. Then, the maintaining service will be notified to fix the defibrillator or to change the expired parts.