Adaptive windowing for cardiac waveform discrimination

US7574260B2 · kind B2 · utility

Assignee

• Cardiac Pacemakers, Inc. · US

Inventors

• Kevin J. Stalsberg · White Bear Lake, US
• Yanting Dong · Windom, US
• Scott A. Meyer · Rochester, US
• Eric K. Enrooth · Lino Lakes, US
• Derek D. Bohn · Woodbury, US

Key dates

• Filing date: Apr 28, 2005
• Grant date: Aug 11, 2009
• Expiry date: Jun 11, 2025

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61B5/7217
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

Cardiac devices and methods provide adaptation of detection windows used to determine a cardiac response to pacing. Adapting a detection window involves sensing a cardiac signal indicative of a particular type of cardiac pacing response, and detecting a feature of the sensed cardiac signal. The cardiac response detection window associated with the type of cardiac pacing response is preferentially adjusted based on the location of the detected cardiac feature. Preferential adjustment of the detection window may involve determining a direction of change between the detection window and the detected feature. The detection window may be adapted more aggressively in a more preferred direction and less aggressively in a less preferred direction.