07250048 is referenced by 128 patents and cites 408 patents.

A system and method for creating lesions and assessing their completeness or transmurality. Assessment of transmurality of a lesion is accomplished by monitoring the impedance of the tissue to be ablated. Rather than attempting to detect a desired drop or a desired increase impedance, completeness of a lesion is detected in response to the measured impedance remaining at a stable level for a desired period of time, referred to as an impedance plateau. The mechanism for determining transmurality of lesions adjacent individual electrodes or pairs may be used to deactivate individual electrodes or electrode pairs, when the lesions in tissue adjacent these individual electrodes or electrode pairs are complete, to create an essentially uniform lesion along the line of electrodes or electrode pairs, regardless of differences in tissue thickness adjacent the individual electrodes or electrode pairs. Complete or partial submersion in a fluid of the ablating portion of the ablation device may be detected prior to, during or following an ablation procedure.

Title
Ablation system and method of use
Application Number
10/923178
Publication Number
7250048 (B2)
Application Date
August 20, 2004
Publication Date
July 31, 2007
Inventor
Scott E Jahns
Hudson
WI, US
David E Francischelli
Anoka
MN, US
Agent
Jeffrey J Hohenshell
Mike Jaro
Assignee
Medtronic
MN, US
IPC
A61B 18/18
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