Expandable-collapsible electrode structures made of electrically conductive material
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United States of America Patent
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May 18, 2004
Grant Date -
May 15, 2003
app pub date -
Jun 11, 2002
filing date -
Jan 19, 1996
priority date (Note) -
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status (Latency Note)
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Abstract
Electrode assemblies and associated systems employ a nonporous wall having an exterior for contacting tissue. The exterior peripherally surrounds an interior area. The wall is essentially free of electrically conductive material. The wall is adapted to assume an expanded geometry having a first maximum diameter and a collapsed geometry having a second maximum diameter less than the first maximum diameter. The assemblies and systems include a lumen that conveys a medium containing ions into the interior area. An element free of physical contact with the wall couples the medium within the interior area to a source of electrical energy to enable ionic transport of electrical energy from the source through the medium to the wall for capacitive coupling to tissue contacting the exterior of the wall.
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