Methods for control of the ventricular activation sequence

US5267560A · kind A · utility

Inventor

• Fred Cohen · Washington Crossing, US

Key dates

• Filing date: Dec 28, 1992
• Grant date: Dec 7, 1993
• Expiry date: Dec 28, 2012

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61N1/365
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

Apparatus and methods for improving the ventricular activation sequence of the heart by pacing at an advantageous selected ventricular location to achieve shortening of the QRS complex or pacing at multiple advantageous selected ventricular locations, either simultaneously or with a programmed delay or delays between firings, to achieve shortening of the QRS complex in combination with producing a desirable and efficient ventricular motion. During a cardiac cycle initiated by intrinsic cardiac activity, stimulating impulses may be directed to advantageous selected locations of the ventricles by employing intrinsic cardiac signals to trigger the stimulating impulses, either simultaneously or with a programmed delay or delays between the sensed event or events and firing event or events, to provide improved mechanical and electrical ventricular function.