High impedance and low polarization electrode
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United States of America Patent
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May 17, 2011
Grant Date -
Mar 3, 2005
app pub date -
Aug 27, 2003
filing date -
Aug 27, 2003
priority date (Note) -
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Abstract
An insulative housing formed about a distal end of a medical electrical lead body includes a cavity and a port; an ionically conductive medium fills the cavity and is in intimate contact with an electrode surface contained within the cavity. When a current is delivered to the electrode surface contained within the cavity, a first current density generated at the electrode surface is smaller than a second current density generated out from the port of the insulative housing; thus, the port forms a high impedance and low polarization tissue-stimulating electrode.
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