Noninvasive methods and systems of determining the extent of tissue capture from cardiac pacing
AssigneeMedtronic, Inc.
InventorSubham Ghosh
Life of this patent
Estimating the term…
Abstract
Methods and systems of evaluating cardiac pacing in candidate patients for cardiac resynchronization therapy and cardiac resynchronization therapy patients are disclosed. The methods and systems disclosed allow treatments to be personalized to patients by measuring the extent of tissue capture from cardiac pacing under various therapy parameter conditions. Systems and methods of optimizing right ventricle only cardiac pacing are also disclosed.
Claims30
A method of determining the extent of applied cardiac tissue stimulation due to pacing comprising:
- applying electrodes on a patient's torso;
- pacing the patient's cardiac tissue;
- receiving torso-surface potential signals detected by the electrodes;
- determining an activation time for each electrode;
- determining the number of electrodes that register an activation time that meets predetermined criteria;
- calculating a percentage index by dividing the number of electrodes that registered an activation time that meets a predetermined criteria by the total number of electrodes distributed on the patient's torso;
- and
- determining the extent of applied cardiac tissue stimulation due to pacing based on the percentage index.
A system to determine the extent of applied cardiac tissue stimulation due to pacing, the system comprising:
- electrodes configured to be distributed on a patent's torso;
- a pacing device configured to stimulate the patent's cardiac tissue;
- a processing unit configured to:
- determine the number of electrodes that register an activation time that meet as predetermined criteria;
- calculate a percentage index by dividing the number of electrodes that registered activation times that meet the predetermined criteria by the total number of electrodes distributed on the patient's torso;
- and
- determine the extent of applied cardiac tissue stimulation due to pacing based on the percentage index.
A method of determining the extent of applied cardiac tissue stimulation due to pacing comprising:
- applying stimulation to the patient's cardiac tissue and receiving potential signals detected at a first time period;
- determining the extent of applied cardiac tissue stimulation due to pacing based on activation times derived from the potential signals received at the first time period;
- adjusting a therapeutic parameter related to the delivery of the stimulation to the patient's cardiac tissue based on the determined extent of applied cardiac tissue electrical stimulation due to pacing, in order to meet a predetermined treatment goal;
- applying stimulation to the patient's cardiac tissue and receiving potential signals detected at a second time period;
- determining the extent of applied cardiac tissue stimulation due to pacing based on the potential signals received at the second time period;
- determining if the adjustment of the therapeutic parameter resulted in meeting the predetermined treatment goal.
A system to determine the extent of applied cardiac tissue stimulation due to pacing, the system comprising:
- electrodes configured to be distributed on a patent's torso;
- means for stimulating the patent's cardiac tissue;
- means for determining the number of electrodes that register an activation time that meet as predetermined criteria;
- means for calculating a percentage index by dividing the number of electrodes that registered activation times that meet the predetermined criteria by the total number of electrodes distributed on the patient's torso;
- and
- means for determining the extent of applied cardiac tissue stimulation due to pacing based on the percentage index.
A method of determining the extent of applied cardiac tissue stimulation due to pacing comprising:
- applying electrodes on a patient's torso;
- pacing the patient's cardiac tissue, the pacing of the cardiac tissue is timed to avoid interference with the intrinsic rhythm of the heart;
- receiving torso-surface potential signals detected by the electrodes;
- determining an activation time for each electrode;
- determining the number of electrodes that register an activation time that meets a predetermined criteria;
- calculating a percentage index by dividing the number of electrodes that registered an activation time that meets the predetermined criteria, the predetermined criteria comprises a predetermined time period within which the activation time of electrodes must be registered, by the total number of electrodes distributed on the patient's torso;
- and
- determining the extent of applied cardiac tissue stimulation due to pacing based on the percentage index.
Dependencies are inferred from the claim text.