Automatic determination and selection of filtering in a cardiac rhythm management device

US10149627B2 · kind B2 · utility

Assignee

• Cardiac Pacemakers, Inc. · US

Inventors

• Venugopal Allavatam · San Clemente, US
• Stephen J. Hahn · Shoreview, US
• Keith L. Herrmann · Minneapolis, US
• Mitchell Lanz · Maple Grove, US
• Krzysztof Z. Siejko · Maple Grove, US
• Benjamin Speakman · Eagan, US

Key dates

• Filing date: Nov 29, 2016
• Grant date: Dec 11, 2018
• Expiry date: Jan 25, 2037

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61B5/7282
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

Methods and/or device facilitating and selecting among multiple modes of filtering a cardiac electrical signal, in which one filtering mode includes additional high pass filtering of low frequency signals, relative to the other filtering mode. The selection filtering modes may include comparing sensed signal amplitude to one or more thresholds, using the multiple modes of filtering. In another example, an additional high pass filter is enabled, over and above a default or baseline filtering mode, and the detected cardiac signal is monitored for indications of possible undersensing, and/or for drops in amplitude toward a threshold, and the additional high pass filter may be disabled upon finding of possible undersensing or drop in signal amplitude.