Implantable medical device and a method comprising means for detecting and classifying ventricular tachyarrhythmias

US8321016B2 · kind B2 · utility

Assignee

• ST. JUDE MEDICAL AB · SE

Inventors

• Nils Holmstrom · Järfälla, SE
• Andreas Blomqvist · Stockholm, SE
• Sven-Erik Hedberg · Kungsängen, SE
• Malin Öhlander · Stockholm, SE

Key dates

• Filing date: Jun 13, 2007
• Grant date: Nov 27, 2012
• Expiry date: Sep 9, 2028

Classification

• Technology area (CPC G): Physics
• CPC primary: G16H50/20
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

In a method and implantable medical device for ventricular tachyarrhythmia detection and classification, upon detection of a ventricular tachyarrhythmia based on an electrocardiogram signal, cardiogenic impedance data representative of ventricular volume dynamics are collected and used for classifying the detected tachyarrhythmia as stable or unstable. In the latter case but typically not in the former case, defibrillation shocks or other forms of therapy are applied to combat the unstable ventricular tachyarrhythmia.