D.C. biopotential sensing electrode assemblies for apparatus for disease, injury and bodily condition screening or sensing
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United States of America Patent
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Aug 26, 1997
Issued Date -
N/A
app pub date -
Oct 17, 1994
filing date -
Nov 4, 1991
priority date (Note) -
Expired
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Abstract
A DC biopotential sensing electrode assembly is provided for an apparatus for sensing DC biopotentials present at the skin of a subject. The electrodes include an electroconductive medium for transmitting ions from the skin which has a chloride content within a range of from 6-15 grams per hundred grams of such medium. To reduce the corrosive effect of this electroconductive medium, each electrode includes only one metallic component, and to provide an electrode with a low AC impedance, this metal is uniformly coated upon nonmetallic sensor and terminal bodies with a coating thickness within a range of from 0.5 to 1.5 mil. To insure a complete electrical path through both the sensor and the terminal bodies, the nonmetallic portions are formed of conductive plastic.
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