A method for electrostatic spray-coating a medical device having a tubular
wall, such as a stent, having an inner surface, an outer surface and
openings therein. The tubular wall is grounded or electrically charged,
and an electrically charged conductive core wire is located axially
through the center of the stent. An electrical potential is applied to
the conductive core wire to impart an electrical charge to the conductive
core wire. The tubular wall is exposed to an electrically charged coating
formulation, and the electrically charged coating formulation is
deposited onto a portion of the tubular wall to form a coating. The
electrical potentials of the conductive core wire and tubular wall can be
repeatedly alternated.