A SEALING ELEMENT FOR A BIOMEDICAL ELECTRODE

摘要

A sealing element (17) for use in a biomedical vacuum electrode, such as an ECG electrode, comprises a body (22) and a sealing lip (23) which extends around the body and terminates in a sealing edge (24) at the application side. The inner surface of the sealing lip (23) defines a vacuum chamber (V) adapted in use of the electrode to communicate with a source of vacuum through a vacuum passageway (28). The vacuum passageway (28) is connected with the vacuum chamber (V) at the inner side of the sealing lip (23) adjacent the sealing edge (24) and opens into the vacuum chamber by way of an annular opening or gap (28A). A contaminant absorber (18) is placed on the side of the sealing element body (22) facing away from the sealing edge (24) to absorb contaminants carried away from the region of the sealing edge through the passageway (28).