Patent Number: 6,251,125

Title: Method and apparatus for treating ventricular fibrillation using electrogram features

Abstract: A method and system for ventricular defibrillation by coordinating the delivery of defibrillation shocks with sensed ventricular fibrillation complexes in a way which improves the probability of success of the defibrillation shock. Ventricular electrical activity is monitored in two ventricular locations during ventricular fibrillation to detect coarse ventricular fibrillation complexes and contractions of the ventricular cardiac tissue. The defibrillation shock is delivered in coordination with the occurrence of coarse ventricular fibrillation complexes and the contractions of ventricular cardiac tissue, and specifically to occur on the up-slope portion thereof, for optimal probability of success.

Inventors: KenKnight; Bruce H. (Maple Grove, MN), Hsu; William (Circle Pines, MN), Lin; Yayun (St. Paul, MN), Jones; Janice (Clarksburg, MD)

Assignee: Cardiac Pacemakers, Inc.

International Classification: A61N 1/39 (20060101); A61N 001/39 ()

Expiration Date: 06/26/2018