Artifact cancellation to suppress far-field activation during electrophysiology mapping

US9439578B2 · kind B2 · utility

Assignee

• Boston Scientific Scimed, Inc. · US

Inventors

• Pramodsingh Hirasingh Thakur · Woodbury, US
• Shantha Arcot-Krishnamurthy · Vadnais Heights, US
• Barun Maskara · Blaine, US
• Sunipa Saha · Shoreview, US
• Allan C. Shuros · Windom, US
• Shibaji Shome · Arden Hills, US

Key dates

• Filing date: Dec 20, 2013
• Grant date: Sep 13, 2016
• Expiry date: Dec 20, 2033

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61B2018/00839
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A method for mapping a cardiac chamber includes sensing activation signals of intrinsic physiological activity with a plurality of electrodes disposed in or near the cardiac chamber, the activation signals including a near-field activation signal component and a far-field activation signal component, isolating R-wave events in the activation signals, generating a far-field activation template representative of the far-field activation signal component based on the R-wave events, and filtering the far-field activation template from the activation signals to identify the near-field activation signal components in the activation signals.