×

Method and apparatus for optimizing ventricular synchrony during DDD resynchronization therapy using adjustable atrio-ventricular delays

  • US 7,110,817 B2
  • Filed: 12/09/2002
  • Issued: 09/19/2006
  • Est. Priority Date: 05/08/1998
  • Status: Expired due to Term
First Claim
Patent Images

1. A system, comprising:

  • a signal input to receive at least one cardiac signal indicative of cardiac events including at least one atrial event and one ventricular event;

    an event detector, coupled to the signal input, to detect the at least one atrial event and one ventricular event;

    a measurement module, coupled to the event detector, to measure an atrio-ventricular time interval (AV) between an atrial event and a ventricular event of the at least one atrial event and one ventricular event; and

    an atrio-ventricular delay (AVD) calculator coupled to the measurement module, the AVD calculator adapted to calculate an AVD using the AV and a predetermined equation relating the AV to an optimal AVD to provide a maximum positive rate of left ventricular pressure change during systole, LV+dp/dt, by delivering ventricular pacing pulses with the optimal AVD.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×