Devices and methods for implanting a spinal neurological lead having at
least one wing or flap extending transversely from the lead body. The
wing can have a first wrapped configuration in which the wing is
constrained against the lead body and a second unwrapped configuration is
which the wing is unconstrained and allowed to extend outwardly. The wing
can be biased to unwrap such that the wing tips change in angular
position when viewed from the end, and in transverse extension when
viewed from the top, but not in longitudinal position when viewed from
the side. A pusher tube can be used to urge the lead from a delivery
catheter, allowing the wing or wings to extend to urge a surface
electrode toward the spinal cord, to maintain longitudinal position, and
to be passively fixed over time. Leads according to the present invention
can provide improved longitudinal stability after the lead electrode
position has been properly fixed with respect to the spinal cord.