Thomas P Hartley

US Patent:

20210401344, Dec 30, 2021

Filed:

Sep 8, 2021

Appl. No.:

17/469572

Inventors:

- St. Paul MN, US
Steve Kim - New York NY, US
Fikri Goksu - Arden Hills MN, US
Thomas Hartley - Menomonie WI, US

International Classification:

A61B 5/287
A61B 5/00
A61B 5/349

Abstract:

Arrhythmic foci and other driver sites can be mapped using a multi-dimensional catheter. For instance, using a clique of three or more electrodes on the multi-dimensional catheter, an electroanatomical mapping system can identify a maximum bipolar voltage and an average unipolar voltage. The ratio of the average unipolar voltage to the maximum bipolar voltage can be interpreted as an indication of whether a cardiac location is an arrhythmic focus. Alternatively, an evaluation region can be defined about location in the patient's heart. The evaluation includes a plurality of rods, each associated with a respective E-field loop having a respective maximum and minimum amplitude bipole axes, with the rods being defined by the maximum amplitude bipole axes. For a sufficient number of rods within the evaluation region, a focus score for the evaluation region can be computed to reflect rod orientation consistency within the evaluation region.

US Patent:

20190328259, Oct 31, 2019

Filed:

Apr 18, 2019

Appl. No.:

16/388593

Inventors:

- St. Paul MN, US
Steve Kim - New York NY, US
Fikri Goksu - Arden Hills MN, US
Thomas Hartley - Menomonie WI, US

International Classification:

A61B 5/042
A61B 5/0452
A61B 5/00

Abstract:

Arrhythmic foci and other driver sites can be mapped using a multi-dimensional catheter. For instance, using a clique of three or more electrodes on the multi-dimensional catheter, an electroanatomical mapping system can identify a maximum bipolar voltage and an average unipolar voltage. The ratio of the average unipolar voltage to the maximum bipolar voltage can be interpreted as an indication of whether a cardiac location is an arrhythmic focus. Alternatively, an evaluation region can be defined about location in the patient's heart. The evaluation includes a plurality of rods, each associated with a respective E-field loop having a respective maximum and minimum amplitude bipole axes, with the rods being defined by the maximum amplitude bipole axes. For a sufficient number of rods within the evaluation region, a focus score for the evaluation region can be computed to reflect rod orientation consistency within the evaluation region.