Devices and methods for real-time denoising of electrocardiograms

US9681814B2 · kind B2 · utility

Assignee

• ALIVECOR, INC. · US

Inventors

• Conner Daniel Cross Galloway · San Francisco, US
• Alexander Vainius Valys · Colorado Springs, US
• Nicholas Peter HUGHES · San Francisco, US
• David E. Albert · Oklahoma City, US

Key dates

• Filing date: Dec 18, 2015
• Grant date: Jun 20, 2017
• Expiry date: Dec 18, 2035

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61B5/7235
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

Apparatuses and methods (including methods of using such apparatuses) for de-noising electrocardiograms (ECGs) by manually or automatically adjusting the amount of filtering of an ECG signal. For example, real-time ECG signals may be filtered by combining in a weighted fashion an unfiltered portion of an ECG (or a filtered portion of the same ECG) with the same portion of the ECG that has been filtered. The weighting may be adjusted manually and/or automatically. Also described herein are methods for real-time filtering of ECG signals using a combination of filtering techniques including filtering to correct baseline wander, Savitzky-Golay denoising, and threshold smoothing. Multiple filtering techniques may be combined in a weighed manner to provide signal de-noising.