The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 16, 2019
Filed:
Sep. 29, 2016
St. Jude Medical, Cardiology Division, Inc., St. Paul, MN (US);
Jatin S. Relan, Bordeaux, FR;
Valtino X. Afonso, Oakdale, MN (US);
St. Jude Medical, Cardiology Division, Inc., St. Paul, MN (US);
Abstract
A method of mapping cardiac restitution includes: receiving a plurality of EP data points including location and restitution data; identifying a subset of the EP data points forming an EP data point cluster; fitting a restitution curve to the restitution data of the EP data points forming the cluster; and identifying at least one restitution metric for a region of the cardiac surface corresponding to the cluster from the restitution curve. The restitution curve can be an exponential function using quiescent interval data (e.g., DI and/or CL) as the independent variable and cardiac repolarization activity data (e.g., APD, ARI, and/or EGM width) as the dependent variable. The parameters of the exponential function can be determined by optimizing a cost function. A graphical representation of the restitution metric can also be output on a three-dimensional model of the cardiac surface.