| 摘要 |
<p>A low resistance electrical pick-up, such as a fetal scalp electrode (17), comprises a stainless steel wire (10), with an arcuate needle (18) on the outer end of a radial arm (19), the arcuate needle (18) being plated with nickel (14) and then silver (15), optionally with an intervening layer of copper (16), and then an area (11) of the silver layer (15) at least on the outside of the curve of the needle (18), and possibly spaced from the point of the needle, is chloridized and then coated with bio-compatible plastics (12).</p> |
