07367972 is referenced by 159 patents and cites 399 patents.

A system 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.

Title
Ablation system
Application Number
10/657987
Publication Number
7367972 (B2)
Application Date
September 9, 2003
Publication Date
May 6, 2008
Inventor
Rahul Mehra
Stillwater
MN, US
James R Skarda
Lake Elmo
MN, US
Mark T Stewart
Lino Lakes
MN, 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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