Region of interest focal source detection using comparisons of R-S wave magnitudes and LATs of RS complexes

US11006887B2 · kind B2 · utility

Assignee

• Biosense Webster (Israel) Ltd. · IL

Inventors

• Roy Urman · Pardes Hana-Karkur, IL
• Meir Bar-Tal · Haifa, IL
• Yaniv Ben Zrihem · Or Akiva, IL
• Ziyad Zeidan · Baqa al Gharbiyya, IL
• Gal Hayam · Rekhasim, IL
• Stanislav Goldberg · Haifa, IL
• Atul Verma · Toronto, CA
• Yariv Avraham Amos · Even Yehuda, IL
• Richard P. M. Houben · Lanaken, BE

Key dates

• Filing date: Jan 12, 2017
• Grant date: May 18, 2021
• Expiry date: Jul 12, 2037

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61B2562/046
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A system and method of identifying focal sources is presented. The method can comprise detecting, via sensors, electro-cardiogram (ECG) signals over time, each ECG signal detected via one of the sensors having a location in a heart and indicating electrical activity of the heart, each signal comprising at least an R wave and an S wave; creating an R-S map comprising an R-to-S ratio for each of the ECG signals, the R-to-S ratio comprising a ratio of absolute magnitude of the R wave to absolute magnitude of the S wave; identifying, for each of the ECG signals, local activation times (LATs); and correlating the R-to-S ratios for the ECG signals on the R-S map and the identified LATs and using the correlation to identify the focal sources.