Electrode configurations for leads or catheters to enhance localization using a localization system

摘要

An exemplary method includes positioning a lead in a patient where the lead has a longitudinal axis that extends from a proximal end to a distal end and where the lead includes an electrode with an electrical center offset from the longitudinal axis of the lead body; measuring electrical potential in a three-dimensional potential field using the electrode; and based on the measuring and the offset of the electrical center, determining lead roll about the longitudinal axis of the lead body where lead roll may be used for correction of field heterogeneity, placement or navigation of the lead or physiological monitoring (e.g., cardiac function, respiration, etc.). Various other methods, devices, systems, etc., are also disclosed.

主权项

1. A system comprising:
an implantable lead having a tubular body extending from a proximal end to a distal end of the implantable lead, the tubular body having a longitudinal axis extending from the proximal end to the distal end of the implantable lead, and the tubular body having an outer surface extending from the proximal end to the distal end of the implantable lead; a pair of interlocking, independent electrodes directly disposed on the surface of the tubular body, wherein each of the electrodes comprises an electrical center offset from the longitudinal axis of the tubular body; control logic to select one or both of the electrodes; control logic to measure electrical potential in a three-dimensional potential field using a selected electrode or selected electrodes; and control logic to generate data, based at least in part on measurement of electrical potential, for display of the electrical center for each of the electrodes; wherein each of the electrodes comprises a substantially cylindrical portion adjacent a semi-cylindrical portion wherein the semi-cylindrical portion offsets the electrical center toward the semi-cylindrical portion.