LEADLESS PACEMAKER WITH TRIPOLAR ELECTRODE

摘要

A leadless implantable medical device comprises a first electrode configured to deliver electrical pacing energy, a second electrode configured to sense intrinsic electrical cardiac activity, and a third electrode configurable to both deliver electrical pacing energy and sense intrinsic electrical cardiac activity. The first and third electrodes are used for delivering electrical pacing energy and the second and third electrodes are used to sense intrinsic electrical cardiac activity. None of the first, second and third electrodes are incorporated into a lead.

主权项

1. A leadless implantable medical device comprising:
a housing having an outer surface; a first electrode having a first electrode surface area; a second electrode positioned along the outer surface of the housing, the second electrode having a second electrode surface area; a third electrode positioned along the outer surface of the housing, the third electrode having a third electrode surface area; the first electrode surface area is less than one-tenth the second electrode surface area and less than one-tenth the third electrode surface area; wherein the leadless implantable medical device is configured to use one or more of the second electrode and the third electrode as a pacing anode electrode in combination with the first electrode as the pacing cathode electrode for delivering electrical pacing energy; and wherein the leadless implantable medical device is configured to use both the second electrode and the third electrode to sense intrinsic electrical cardiac activity.