Method and system to detect R-waves in cardiac activity signals

US11547339B2 · kind B2 · utility

Assignee

• PACESETTER, INC. · US

Inventors

• Gene A. Bornzin · Simi Valley, US
• Fady Dawoud · Santa Monica, US
• Jong Gill · Valencia, US
• Stuart Rosenberg · Santa Clarita, US
• Fujian Qu · San Jose, US
• Neha Malhotra · Los Angeles, US

Key dates

• Filing date: Oct 1, 2020
• Grant date: Jan 10, 2023
• Expiry date: Jun 12, 2041

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61B5/7203
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A computer implemented method and system for detecting arrhythmias in cardiac activity are provided. The method is under control of one or more processors configured with specific executable instructions. The method obtains far field cardiac activity (CA) signals and applies a direction related responsiveness (DRR) filter to the CA signals to produce DRR filtered signals. The method compares a current sample from the CA signals to a prior sample from the DRR filtered signals to identify a direction characteristic of the CA signals and defines the DRR filter based on a timing constant that is set based on the direction characteristic identified. The method analyzes the CA signals in connection with the DRR filtered signals to identify a peak characteristic of the CA signals and determines peak to peak intervals between successive peak characteristic. The method detects at least one of noise or an arrhythmia based on the peak to peak intervals and records results of the detecting.