MOTION-BASED OPTIMIZATION FOR PLACEMENT OF CARDIAC STIMULATION ELECTRODES
First Claim
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1. A multifilar, electrode-bearing guidewire comprising:
- a plurality of filars wherein each filar comprises a connector end, a distal end and a length defined by a distance between the connector end and the distal end, wherein each of the plurality of filars comprises a different length and wherein each of the plurality of filars comprises a distal electrode;
a connector portion formed by the connector ends of the plurality of filars; and
a multielectrode portion formed by the distal electrodes of the plurality of filars wherein the multielectrode portion comprises along its length a successively fewer number of filars according to the different lengths of filars.
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Abstract
An exemplary method includes use of a multielectrode device that can help position a cardiac stimulation lead to an optimal site in the heart based at least in part on cardiac motion information acquired via the multielectrode device and one or more pairs of current delivery electrodes that establish potential fields (e.g., for use as a coordinate system). An exemplary multielectrode device may be a multielectrode catheter or a multifilar, electrode-bearing guidewire. Various other exemplary methods, devices, systems, etc., are also disclosed.
119 Citations
26 Claims
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1. A multifilar, electrode-bearing guidewire comprising:
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a plurality of filars wherein each filar comprises a connector end, a distal end and a length defined by a distance between the connector end and the distal end, wherein each of the plurality of filars comprises a different length and wherein each of the plurality of filars comprises a distal electrode; a connector portion formed by the connector ends of the plurality of filars; and a multielectrode portion formed by the distal electrodes of the plurality of filars wherein the multielectrode portion comprises along its length a successively fewer number of filars according to the different lengths of filars. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method comprising:
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positioning a pair of current-delivery electrodes in contact with a patient'"'"'s body; advancing a multielectrode-bearing delivery device into the coronary sinus of the patient'"'"'s heart and at least partially into a vein of the left ventricle; delivering current using the pair of current-delivery electrodes to generate a potential field; measuring potentials associated with the potential field using at least one electrode of the multielectrode-bearing delivery device; mapping motion of the multielectrode-bearing delivery device based on the measured potentials; advancing an electrode-bearing lead along the multielectrode-bearing delivery device; delivering current using the pair of current-delivery electrodes to generate a potential field; measuring potentials associated with the potential field using at least one electrode of the electrode-bearing lead; mapping motion of the electrode-bearing lead based on the measured potentials; determining the position of the electrode-bearing lead by comparing the mapped motion of the multielectrode-bearing delivery device and the mapped motion of the electrode-bearing lead; and after determining the position of the electrode-bearing lead, retracting the multielectrode-bearing delivery device while maintaining the position of the electrode-bearing lead. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A system for positioning a multielectrode-bearing delivery device in a vein of the heart, the system comprising:
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a multielectrode-bearing delivery device; an electrode-bearing lead positionable via the multielectrode-bearing delivery device; at least one pair of current-delivery electrodes to establish a coordinate system in a patient'"'"'s body; and control logic to call for delivery of current to a pair of the current-delivery electrodes to generate a potential field, to call for measuring potentials associated with the potential field using at least one electrode of the multielectrode-bearing delivery device, to call for mapping motion of the at least one electrode of the multielectrode-bearing delivery device, to call for measuring potentials associated with the potential field using at least one electrode of the electrode-bearing lead, to call for mapping motion of the at least one electrode of the electrode-bearing lead, and to call for comparing mapped motion of at least one electrode of the multielectrode-bearing delivery device and at least one electrode of the electrode-bearing lead, and to output an indicator based at least in part on a comparison of mapped motion. - View Dependent Claims (21, 22, 23, 24, 25, 26)
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Specification