Patent application number | Description | Published |
20120289845 | TECHNIQUES FOR DETERMINING MORPHOLOGICAL STABILITY OF CARDIAC CYCLES - A method includes retrieving electrogram (EGM) data for N cardiac cycles from a memory of an implantable medical device. N is an integer greater than 1. The method further include categorizing each of the N cardiac cycles into one of a plurality of categories based on a morphology of the N cardiac cycles and performing comparisons between pairs of the N cardiac cycles. Each of the comparisons between two cardiac cycles includes detecting a mismatch between the two cardiac cycles when the two cardiac cycles are in different categories, and detecting a match between the two cardiac cycles when the two cardiac cycles are in the same category. Additionally, the method includes classifying the rhythm of the N cardiac cycles based on a number of detected matches and detected mismatches. | 11-15-2012 |
20130165983 | MONITORING ACTIVATION TIMES FOR USE IN DETERMINING PACING EFFECTIVNESS - Methods and/or devices may be configured to track effectiveness of pacing therapy by monitoring activation times over time, e.g., between pacing stimulus and electrical activity resulting from the pacing stimulus. Generally, the methods and/or devices may determine whether the delivered pacing therapy was effective based on the measured activation times. | 06-27-2013 |
20130165986 | DETECTION OF TARGET VEIN FOR CRT THERAPY - A method for selecting a target vein for left ventricular lead placement for cardiac resynchronization therapy includes determining electrical dispersion for the first coronary vein by calculating the difference between (i) activation time at a location of the vein that has the latest activation time of a plurality of locations in the vein and (ii) activation time at a location that has the earliest activation time of the plurality of locations. The method may further include (ii) determining whether the magnitude of the electrical dispersion for the vein meets or exceeds a predetermined threshold selecting the vein if the vein meets or exceeds the predetermined threshold; or (ii) selecting, among several veins, the vein that has the highest electrical dispersion. | 06-27-2013 |
20130165988 | EFFECTIVENESS OF VENTRICULAR SENSE RESPONSE IN CRT - A method for monitoring the effectiveness of VSR and for taking action to improve the effectiveness of VSRs, if they are determined to be ineffective, includes comparing the a VSR evoked electrogram to a template electrogram of a pure biventricular paced CRT beat. If the electrograms, or features thereof, are similar, the VSR is determined to be effective. If the VSR is determined to be ineffective, the AV delay of biventricular CRT is shortened in a step-wise fashion in an incremental manner. | 06-27-2013 |
20130218224 | CRITERIA FOR OPTIMAL ELECTRICAL RESYNCHRONIZATION DERIVED FROM MULTIPOLAR LEADS OR MULTIPLE ELECTRODES DURING BIVENTRICULAR PACING - Generally, the disclosure is directed one or more methods or systems of cardiac pacing employing a right ventricular electrode and a plurality of left ventricular electrodes. Pacing using the right ventricular electrode and a first one of the left ventricular electrodes and measuring activation times at other ones of the left ventricular electrodes. Pacing using the right ventricular electrode and a second one of the ventricular electrodes and measuring activation times at other ones of the left ventricular electrodes. Employing sums of the measured activation times to select one of the left ventricular electrodes for delivery of subsequent pacing pulses. | 08-22-2013 |
20130218225 | CRITERIA FOR OPTIMAL ELECTRICAL RESYNCHRONIZATION DERIVED FROM MULTIPOLAR LEADS OR MULTIPLE ELECTRODES DURING BIVENTRICULAR PACING - Generally, the disclosure is directed one or more methods or systems of cardiac pacing employing a right ventricular electrode and a plurality of left ventricular electrodes. Pacing using the right ventricular electrode and a first one of the left ventricular electrodes and measuring activation times at other ones of the left ventricular electrodes. Pacing using the right ventricular electrode and a second one of the ventricular electrodes and measuring activation times at other ones of the left ventricular electrodes. Employing sums of the measured activation times to select one of the left ventricular electrodes for delivery of subsequent pacing pulses. | 08-22-2013 |
20130218226 | CRITERIA FOR OPTIMAL ELECTRICAL RESYNCHRONIZATION DERIVED FROM MULTIPOLAR LEADS OR MULTIPLE ELECTRODES DURING BIVENTRICULAR PACING - Generally, the disclosure is directed one or more methods or systems of cardiac pacing employing a right ventricular electrode and a plurality of left ventricular electrodes. Pacing using the right ventricular electrode and a first one of the left ventricular electrodes and measuring activation times at other ones of the left ventricular electrodes. Pacing using the right ventricular electrode and a second one of the ventricular electrodes and measuring activation times at other ones of the left ventricular electrodes. Employing sums of the measured activation times to select one of the left ventricular electrodes for delivery of subsequent pacing pulses. | 08-22-2013 |
20130218227 | CRITERIA FOR OPTIMAL ELECTRICAL RESYNCHRONIZATION DERIVED FROM MULTIPOLAR LEADS OR MULTIPLE ELECTRODES DURING BIVENTRICULAR PACING - Generally, the disclosure is directed one or more methods or systems of cardiac pacing employing a right ventricular electrode and a plurality of left ventricular electrodes. Pacing using the right ventricular electrode and a first one of the left ventricular electrodes and measuring activation times at other ones of the left ventricular electrodes. Pacing using the right ventricular electrode and a second one of the ventricular electrodes and measuring activation times at other ones of the left ventricular electrodes. Employing sums of the measured activation times to select one of the left ventricular electrodes for delivery of subsequent pacing pulses. | 08-22-2013 |
20140005740 | CRITERIA FOR OPTIMAL ELECTRICAL RESYNCHRONIZATION DURING BIVENTRICULAR PACING | 01-02-2014 |
20150045849 | CRITERIA FOR OPTIMAL ELECTRICAL RESYNCHRONIZATION DERIVED FROM MULTIPOLAR LEADS OR MULTIPLE ELECTRODES DURING BIVENTRICULAR PACING - Generally, the disclosure is directed one or more methods or systems of cardiac pacing employing a right ventricular electrode and a plurality of left ventricular electrodes. Pacing using the right ventricular electrode and a first one of the left ventricular electrodes and measuring activation times at other ones of the left ventricular electrodes. Pacing using the right ventricular electrode and a second one of the ventricular electrodes and measuring activation times at other ones of the left ventricular electrodes. Employing sums of the measured activation times to select one of the left ventricular electrodes for delivery of subsequent pacing pulses. | 02-12-2015 |