WET ELECTRODE FOR ABDOMINAL FETAL ELECTROCARDIOGRAM DETECTION

摘要

An electrode includes a cutaneous contact for sensing electrocardiogram signals from a pregnant human subject, the electrocardiogram signals containing fetal electrocardiogram signals; a connector in contact with the cutaneous contact for transmission of the electrocardiogram signals from the cutaneous contact to a destination; and a cushion including a cavity, the cushion configured such that the cavity faces the pregnant human subject when in use, the cutaneous contact being coupled to the cushion such that the cutaneous contact is positioned within the cavity, the cushion and the cutaneous contact configured to allow the cutaneous contact to be an electrical interface with skin of the subject when the electrode is in use, the cavity being configured to receive and retain therein an amount of a conductive wetting substance sufficient to provide a skin-electrode impedance of less than 150 kΩ when the electrocardiogram signals are at frequencies of 10 Hz or less.