Selective resynchronization therapy optimization based on user preference
First Claim
Patent Images
1. A system comprising:
- a sensing circuit configured to;
(1) detect at least one of a sensed or paced atrial event; and
(2) detect a sensed ventricular event; and
a controller or programmer circuit, configured to be communicatively coupled to the sensing circuit, the controller or programmer circuit configured to;
(1) determine a measured atrioventricular delay (AVD) concluded by the sensed ventricular event;
(2) determine a measured interatrial delay (IAD) concluded by the sensed atrial event;
(3) determine a first atrioventricular delay value, AVD1, selected to approximately maximize contractility of a ventricle, using the measured AVD concluded by the sensed ventricular event; and
(4) determine a second atrioventricular delay value, AVD2, selected to approximately maximize stroke volume of the ventricle, using the measured IAD concluded by the sensed atrial event, wherein the controller or programmer circuit is configured to use a blended atrioventricular delay (AVDblended) that is determined using a user-modifiable function of both AVD1 and AVD2, wherein the AVDblended is determined as an individually-scaled sum of AVD1 and AVD2.
0 Assignments
0 Petitions
Accused Products
Abstract
A method and system for calculating an atrio-ventricular delay interval based upon an inter-atrial delay exhibited by a patient'"'"'s heart. The aforementioned atrio-ventricular delay interval may optimize the stroke volume exhibited by a patient'"'"'s heart. The aforementioned atrio-ventricular delay interval may be blended with another atrio-ventricular delay interval that may optimize another performance characteristic, such as left ventricular contractility. Such blending may include finding an arithmetic mean, geometric mean, or weighted mean of two or more proposed atrio-ventricular delay intervals.
-
Citations
20 Claims
-
1. A system comprising:
-
a sensing circuit configured to;
(1) detect at least one of a sensed or paced atrial event; and
(2) detect a sensed ventricular event; anda controller or programmer circuit, configured to be communicatively coupled to the sensing circuit, the controller or programmer circuit configured to;
(1) determine a measured atrioventricular delay (AVD) concluded by the sensed ventricular event;
(2) determine a measured interatrial delay (IAD) concluded by the sensed atrial event;
(3) determine a first atrioventricular delay value, AVD1, selected to approximately maximize contractility of a ventricle, using the measured AVD concluded by the sensed ventricular event; and
(4) determine a second atrioventricular delay value, AVD2, selected to approximately maximize stroke volume of the ventricle, using the measured IAD concluded by the sensed atrial event, wherein the controller or programmer circuit is configured to use a blended atrioventricular delay (AVDblended) that is determined using a user-modifiable function of both AVD1 and AVD2, wherein the AVDblended is determined as an individually-scaled sum of AVD1 and AVD2. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
-
-
20. A system comprising:
-
a sensing circuit configured to;
(1) detect at least one of a sensed or paced atrial event; and
(2) detect a sensed ventricular event; anda controller or programmer circuit, configured to be communicatively coupled to the sensing circuit, the controller or programmer circuit configured to;
(1) determine a measured atrioventricular delay (AVD) concluded by the sensed ventricular event;
(2) determine a measured interatrial delay (IAD) concluded by the sensed atrial event;
(3) determine a first atrioventricular delay value, AVD1, selected to approximately maximize contractility of a ventricle, using the measured AVD concluded by the sensed ventricular event; and
(4) determine a second atrioventricular delay value, AVD2, selected to approximately maximize stroke volume of the ventricle, using the measured IAD concluded by the sensed atrial event, wherein the controller or programmer circuit is configured to use a blended atrioventricular delay (AVDblended) that is determined using a user-weightable function of both AVD1 and AVD2;a pacing circuit configured to be programmed by the controller or programmer circuit to provide cardiac electrostimulation pulses according to AVDblended; and wherein the AVDblended is determined according to AVDblended=(K5* AVD1+K6*AVD2)/(K5+K6).
-
Specification