Systems and methods for detecting atrial tachyarrhythmia using heart sounds

US10182735B2 · kind B2 · utility

Assignee

• Cardiac Pacemakers, Inc. · US

Inventors

• Pramodsingh Hirasingh Thakur · Woodbury, US
• Bin Mi · Plymouth, US
• Howard D. Simms, Jr. · Shoreview, US
• Qi An · Blaine, US
• John D. Hatlestad · Burnsville, US
• Keith R. Maile · New Brighton, US

Key dates

• Filing date: Oct 27, 2016
• Grant date: Jan 22, 2019
• Expiry date: Oct 27, 2036

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61B5/686
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

Systems and methods for detecting atrial tachyarrhythmias (AT) such as atrial fibrillation (AF) are disclosed. A medical system can include a cardiac signal sensor circuit to sense a cardiac electrical signal and a heart sound (HS) sensor to sense heart a HS signal. A cardiac electrical signal metric, including a cycle length variability or a detection of atrial electrical activity, can be generated from the cardiac electrical signal. A HS metric can be generated from the HS signal, including a status of detection of S4 heart sound or a S4 heart sound intensity indicator. The system can include an AT detector circuit that can detect an AT event, such as an AF event, using the cardiac electrical signal metric and the HS metric. The system can additionally classify the detected AT event as an AF or an atrial flutter event.