Selective resynchronization therapy optimization based on user preference
AssigneeCardiac Pacemakers, Inc.
InventorsRichard Fogoros, Jiang Ding, Yinghong Yu
Life of this patent
Estimating the term…
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.
Claims23
A method comprising:
- determining a first atrio-ventricular delay value selected to approximately maximize contractility of a ventricle;
- determining a second atrio-ventricular delay value selected to approximately maximize stroke volume of the ventricle;
- and
- combining the first and second atrio-ventricular delay values.
A system comprising:
- a cardiac rhythm management device;
- a first lead having an electrode configured to make electrical contact with a region in a right atrium of a heart, the first lead configured to be coupled to the cardiac rhythm management device;
- a second lead having an electrode configured to pass through and electrically contact a mid-coronary sinus of the heart before electrically contacting a left ventricle of the heart, the second lead configured to be coupled to the cardiac rhythm management device;
- and
- a programmer configured to communicate data with the cardiac rhythm management device;
- wherein the programmer includes instructions that perform a mode of operation, during which, signals from the second lead are interpreted as indicating left atrial activity, and upon termination of the mode of operation, signals from the second lead are interpreted as indicating left ventricular activity;
- and
- wherein the inter-atrial delay is determined by finding a span of time separating a paced or sensed event in the right atrium and a signal from the second lead indicating left atrial activity.
A method comprising:
- implanting a first lead so that an electrode therein makes electrical contact with a region within a right atrium of a heart;
- implanting a second lead so that a first electrode thereof makes electrical contact with the mid-coronary sinus of the heart and a second electrode thereof makes electrical contact with a first region of a left ventricle of the heart;
- and
- coupling the first and second leads to a cardiac rhythm management device.
Dependencies are inferred from the claim text.