Apparatus and method for assessing tissue ablation transmurality
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United States of America Patent
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Issued Date -
Apr 7, 2005
app pub date -
Feb 19, 2003
filing date -
Feb 19, 2002
priority date (Note) -
Abandoned
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Abstract
An instrument is provided to assess the transmurality of an ablation lesion from a first surface of a targeted biological tissue to an opposed second surface thereof. The instrument includes a needle member having an elongated shaft and a distal tip portion adapted to pierce the tissue first surface and into the ablation lesion of the biological tissue. A plurality of needle electrodes are spaced-apart along the elongated shaft. When the needle member pierces the tissue first surface, each the electrode being positioned at different respective depths of the biological tissue from the tissue first surface to the tissue second surface. These electrodes each measure at least one of conduction time, conduction velocity, phase angle, and impedance through at least a portion of the targeted tissue and at the respective depth to determine the transmurality of the ablation lesion.
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