US 11,883,106 B2
Lesion prediction based in part on tissue characterization
Jeffrey M. Fish, Maple Grove, MN (US); and Lynn E. Clark, Knoxville, TN (US)
Assigned to St. Jude Medical, Cardiology Division, Inc., St. Paul, MN (US)
Filed by St. Jude Medical, Cardiology Division, Inc., St. Paul, MN (US)
Filed on May 1, 2017, as Appl. No. 15/583,519.
Claims priority of provisional application 62/331,398, filed on May 3, 2016.
Prior Publication US 2017/0319279 A1, Nov. 9, 2017
Int. Cl. A61B 34/10 (2016.01); A61B 18/14 (2006.01); A61B 34/00 (2016.01); A61B 18/12 (2006.01); A61B 18/00 (2006.01); A61B 90/00 (2016.01)
CPC A61B 34/10 (2016.02) [A61B 18/12 (2013.01); A61B 18/1206 (2013.01); A61B 18/1492 (2013.01); A61B 34/25 (2016.02); A61B 2018/0066 (2013.01); A61B 2018/00577 (2013.01); A61B 2018/00779 (2013.01); A61B 2018/00875 (2013.01); A61B 2090/065 (2016.02)] 14 Claims
OG exemplary drawing
 
1. A system, comprising:
an electronic control unit (ECU) configured to:
measure an impedance at an interface between an electrode of a catheter and tissue of a patient;
measure contact force between the electrode and the tissue;
calculate a ratio of the measure of impedance and the measure of contact force, wherein the calculated ratio comprises a fraction which utilizes the measure of impedance as one of the numerator or the denominator and the measure of contact force as the other of the numerator or the denominator; and
characterize the tissue for a clinician by presenting the calculated ratio, or by calculating a metric utilizing the calculated ratio and presenting the metric to the clinician.