Leads containing segmented electrodes with non-perpendicular legs and methods of making and using

摘要

A method of making an electrical stimulation lead method includes attaching a pre-electrode to a lead body. The pre-electrode is a single, unitary, undifferentiated construct with a ring-shaped exterior. The method further includes attaching a plurality of conductor wires to the pre-electrode; and, after coupling to the lead body, removing an outer portion of the pre-electrode to separate remaining portions of the pre-electrode into a plurality of segmented electrodes spaced around the circumference of the lead body. When separated, each of the segmented electrodes includes a body and at least one leg extending inwardly from the body. The body defines an external stimulating surface and each of the at least one leg has an outer surface. For at least one of the at least one leg, the outer surface of the leg forms a non-perpendicular angle with the external stimulating surface of the body.

主权项

1. A pre-electrode, comprising:
an outer portion; and a plurality of separated segmented electrodes distributed around a circumference of the pre-electrode and within the outer portion; wherein the pre-electrode is a single, unitary, undifferentiated construct with a ring-shaped exterior and is configured and arranged so that removal of the outer portion results in the remaining portions forming the plurality of separated segmented electrodes, wherein each of the separated segmented electrodes comprises a body and at least one leg extending inwardly from the body, the body defining an external stimulating surface and each of the at least one leg having an outer surface, wherein, for at least one of the at least one leg, the outer surface of the leg forms a non-perpendicular angle with the external stimulating surface of the body, wherein the outer portion and the plurality of segmented electrodes are made of a same conductive material.