The invention provides a low cost, fully integrated, disposable patch for the non-invasive, continuous monitoring of fetal electrocardiogram (ECG). The patch detects fetal ECG by filtering the dominant maternal ECG therefrom. In one embodiment, an upper electrode is used to obtain a relatively pure maternal...http://www.google.com/patents/US20050277841?utm_source=gb-gplus-sharePatent US20050277841 - Disposable fetal monitor patch
