Electrodes for creating lesions in tissue regions at or near a sphincter
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United States of America Patent
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May 13, 2003
Issued Date -
N/A
app pub date -
Jan 14, 2002
filing date -
Feb 19, 1998
priority date (Note) -
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Abstract
Improved electrode assemblies for treating a tissue region at or near a sphincter comprise a support structure and an electrode carried by the support structure for advancement in a path to penetrate the tissue region. In one arrangement, the electrode has a non-cylindrical cross section selected to resist deflection when advanced to penetrate the tissue region. In another arrangement, the electrode includes a tissue stop to resist tissue penetration beyond a selected depth. In another arrangement, the electrode includes a proximal portion formed from a first material and a distal tissue penetrating portion formed of a second material different than the first material. The first material can comprise, e.g., stainless steel, and the second material can comprise, e.g., nickel titanium.
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