System providing ventricular pacing and biventricular coordination

US6285907A · kind A · utility

Assignee

• Cardiac Pacemakers, Inc. · US

Inventors

• Andrew P. Kramer · Minneapolis, US
• Jeffrey E. Stahmann · Ramsey, US
• Rene H. Wentkowski · Berlin, DE
• Kenneth L. Baker · Shoreview, US
• Jesse W. Hartley · Lino Lakes, US
• David B. Krig · Brooklyn Park, US

Key dates

• Filing date: May 21, 1999
• Grant date: Sep 4, 2001
• Expiry date: May 21, 2019

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61N1/3987
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A cardiac rhythm management system includes techniques for computing an indicated pacing interval, AV delay, or other timing interval. In one embodiment, a variable indicated pacing interval is computed based at least in part on an underlying intrinsic heart rate. The indicated pacing interval is used to time the delivery of biventricular coordination therapy even when ventricular heart rates are irregular, such as in the presence of atrial fibrillation. In another embodiment, a variable filter indicated AV interval is computed based at least in part on an underlying intrinsic AV interval. The indicated AV interval is used to time the delivery of atrial tracking biventricular coordination therapy when atrial heart rhythms are not arrhythmic. Other indicated timing intervals may be similarly determined. The indicated pacing interval, AV delay, or other timing interval can also be used in combination with a sensor indicated rate indicator.