×

Method and apparatus for assessing left ventricular function and optimizing cardiac pacing intervals based on left ventricular wall motion

  • US 8,150,513 B2
  • Filed: 10/27/2009
  • Issued: 04/03/2012
  • Est. Priority Date: 02/28/2003
  • Status: Active Grant
First Claim
Patent Images

1. A computer readable medium programmed with instructions for performing a method for assessing left ventricular function and optimizing cardiac pacing intervals in a device programmed to deliver a cardiac resynchronization therapy (CRT), comprising:

  • instructions for sensing movement of a left ventricular lateral wall a heart with a deployed movement transducer and for measuring a motion signal from the transducer related to the movement of the left ventricular lateral wall;

    instructions for opening a data collection window during a portion of a selected cardiac cycle phase;

    instructions for storing the motion signal throughout at least a part of the portion of the data collection window for a predetermined time interval or for more than one cardiac cycle;

    instructions for verifying a stability characteristic of the motion signal during the predetermined time interval or for more than one cardiac cycle;

    instructions for averaging the stored motion signal;

    instructions for determining a signal characteristic from the averaged stored signal that is representative of left ventricular function; and

    instructions for delivering a cardiac resynchronization therapy (CRT) based at least in part upon the signal characteristic.

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