Bi-ventricular pacer, system and method

US7228172B2 · kind B2 · utility

Assignee

• ST. JUDE MEDICAL AB · SE

Inventors

• Karin Jarverud · Sundbyberg, SE
• Nils Holmstrom · Järfälla, SE
• Anders Bjorling · Järfälla, SE
• Asa Uhrenius · Stockholm, SE
• Sven-Erik Hedberg · Kungsängen, SE
• Goran Budgifvars · Spånga, SE
• Hans Strandberg · Sundbyberg, SE

Key dates

• Filing date: Dec 13, 2003
• Grant date: Jun 5, 2007
• Expiry date: Jan 9, 2025

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61N1/3684
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

An implantable bi-ventricular heart stimulating device and system, suitable for treating congestive heart failure, have a control circuit with first and second pacing circuits and first and second sensing circuits. The device operates with time cycles corresponding to normal heart cycles. The control circuit determines: (a) whether a signal typical of an evoked response to a pacing pulse delivered by the first pacing circuit is sensed within a first time interval and (b) whether a signal typical for an R-wave transferred from the second ventricle, or from some other part of the heart, to the first ventricle is detected within a first time window. The operation of the device depends on whether the conditions (a) and (b) are fulfilled.