用於術後復健患者心電信號監測之非接觸式生理訊號量測系統設計

Abstract

心血管疾病是目前全世界主要死因之一，它包含心臟與血管障礙，例如心臟瓣膜、心律不整、心臟病、中風…等疾病。因此許多國家開始專注在心血管疾病的預防及治療。為了要隨時隨地監控心律不整病患的心電圖狀態，發展穿戴式心電圖監控裝置是必要的，本論文提出一個非接觸式生理訊號量測系統，並且應用監控心臟術後復健患者的心電圖。為了避免長時間監控心電圖導電膠乾燥的問題及電極能夠嵌入衣服上提供更方便的量測，本論文發展一個不需使用導電膠及不需接觸皮膚的非接觸式電極。經過測試後，本論文提出的非接觸式電極在透過衣服量測到的心電圖與丟棄式貼片電極量測到的心電圖相關度達到98.43%。另外將本論文提出的非接觸式生理訊號量測系統監控具有心律不整的病患，從量測實驗結果得知，本論文提出的非接觸式生理訊號量測系統確實可以使用在心臟術後復健患者的心電圖監控上。

Cardiovascular disease is a group of disorders of the heart and blood vessels, such as heart valve problems, arrhythmia, heart attack, stroke, et al, and is the number one cause of death in global. Therefore, many countries paid attention to prevention and cure of cardiovascular diseases. In order to monitor the patient’s electrocardiogram (ECG) state anytime and anywhere, the development of wearable ECG monitoring device is necessary. In this study, a non-contact bio-potential acquisition system for monitoring ECG under post-cardiac-surgical rehabilitation was proposed. Here, a novel non-contact electrode was developed to measure the user’s bio-potential without conduction gel, and without contacting with the user’s skin. It can avoid the issue of drying under long-term ECG monitoring, and can be embedded in a clothes to provide more comfortable ECG measurement. The experimental results show that the correlation between ECG signal quality measured by using the proposed non-contact electrodes across the thin clothes and disposable surface electrodes is about 98.43%. Finally, the proposed non-contact bio-potential acquisition system was applied for monitoring the heart rate of the patients with arrhythmia. From the experimental result, it shows the proposed non-contact bio-potential acquisition system can exactly be used for monitoring ECG under post-cardiac-surgical rehabilitation.