Method and system for delivering cardiac resynchronization therapy with variable atrio-ventricular delay
First Claim
Patent Images
1. A system for delivering a cardiac resynchronization therapy to a heart having a first ventricle and a second ventricle, the system comprising:
- a plurality of sensing/pacing channels to sense cardiac electrical activity and deliver pacing pulses; and
a controller coupled to the sensing/pacing channels, the controller adapted to compute a value for a first atrio-ventricular delay (AVD) interval for the first ventricle as a linear function of at least a measured first intrinsic atrio-ventricular interval for the first ventricle following an atrial pace and a parameter reflective of an interventricular conduction delay between the first ventricle and the second ventricle and to control the delivery of the pacing pulses to the first ventricle in accordance with an AV sequential pacing mode using the first AVD interval.
0 Assignments
0 Petitions
Accused Products
Abstract
A pacing system computes optimal cardiac resynchronization pacing parameters using intrinsic conduction intervals. In various embodiments, values for atrio-ventricular delay intervals are each computed as a function of an intrinsic atrio-ventricular interval and a parameter reflective of an interventricular conduction delay. Examples of the parameter reflective of the interventricular conduction delay include QRS width and interval between right and left ventricular senses.
-
Citations
30 Claims
-
1. A system for delivering a cardiac resynchronization therapy to a heart having a first ventricle and a second ventricle, the system comprising:
-
a plurality of sensing/pacing channels to sense cardiac electrical activity and deliver pacing pulses; and a controller coupled to the sensing/pacing channels, the controller adapted to compute a value for a first atrio-ventricular delay (AVD) interval for the first ventricle as a linear function of at least a measured first intrinsic atrio-ventricular interval for the first ventricle following an atrial pace and a parameter reflective of an interventricular conduction delay between the first ventricle and the second ventricle and to control the delivery of the pacing pulses to the first ventricle in accordance with an AV sequential pacing mode using the first AVD interval. - View Dependent Claims (2, 3, 4, 5)
-
-
6. A system for delivering a cardiac resynchronization therapy to a heart having a first ventricle and a second ventricle, the system comprising:
-
means for determining a first atrio-ventricular delay (AVD) interval for pacing the first ventricle in an atrio-ventricular sequential pacing mode as a linear function of a first intrinsic atrio-ventricular interval between an atrial pace and a ventricular sense for the first ventricle and a parameter reflective of an interventricular conduction delay between the first ventricle and the second ventricle and a second AVD interval for pacing the first ventricle in an atrial tracking mode as a linear function of a second intrinsic atrio-ventricular interval between an atrial sense and another ventricular sense for the first ventricle and the parameter reflective of the interventricular conduction delay; and an implantable cardiac rhythm management device adapted to deliver the cardiac resynchronization therapy using the first AVD interval and the second AVD interval. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13, 14)
-
-
15. A method for optimizing an atrio-ventricular delay (AVD) interval used in a cardiac resynchronization therapy for a heart having a first ventricle and a second ventricle, the method comprising:
-
measuring a first intrinsic atrio-ventricular interval between an atrial pace and a ventricular sense for the first ventricle; computing a values for a first AVD interval for the first ventricle as a linear function of the first intrinsic atrio-ventricular interval and a parameter reflective of an interventricular conduction delay between the first ventricle and the second ventricle; and controlling delivery of pacing pulses to the first ventricle in accordance with an AV sequential pacing mode using the first AVD interval. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24)
-
-
25. A method for pacing a heart having a first ventricle and a second ventricle, the method comprising:
-
measuring a first intrinsic atrio-ventricular interval for the first ventricle following an atrial pace; measuring a second intrinsic atrio-ventricular interval for the first ventricle following an atrial sense; measuring a parameter reflective of an interventricular conduction delay between the first ventricle and the second ventricle; computing a first value for a first atrio-ventricular delay (AVD) interval for pacing the first ventricle in an atrio-ventricular sequential pacing mode as a linear function of the first intrinsic atrio-ventricular interval, the parameter reflective of the interventricular conduction delay, and a first plurality of predetermined coefficients; and computing a second value for a second AVD interval for pacing the first ventricle in an atrial tracking mode as a linear function of the second intrinsic atrio-ventricular interval, the parameter reflective of the interventricular conduction delay, and a second plurality of predetermined coefficients. - View Dependent Claims (26, 27, 28, 29, 30)
-
Specification