Method for spray-coating a medical device having a tubular wall such as a stent
AssigneeSciMed Life Systems, Inc.
InventorsJan Weber, Gordon John Kocur
Life of this patent
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Abstract
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.
Claims20
A method for coating a medical device comprising a tubular wall having an inner surface, an outer surface and openings therein, wherein the method comprises:
- (a) grounding or electrically charging the tubular wall;
- (b) providing a conductive core wire located axially through the tubular wall;
- (c) applying a potential to the conductive core wire to impart an electrical charge to the conductive core wire;
- (d) exposing the tubular wall to an electrically charged coating formulation;
- and
- (e) depositing the coating formulation onto a portion of the tubular wall to form a coating on the tubular wall.
A method for coating a medical device comprising a tubular wall having an inner surface, an outer surface and openings therein, wherein the method comprises:
- (a) grounding or electrically charging the tubular wall;
- (b) providing a first core wire comprising a resistor material located axially through the tubular wall;
- (c) directing a current through the first core wire;
- (d) creating an electrically charged coating formulation;
- and
- (e) depositing the coating formulation onto the tubular wall to form a coating on the tubular wall.
A method for coating at least a portion of a stent, wherein the stent comprises a stent wall having an inner surface, an outer surface and openings therein, wherein the method comprises:
- (a) grounding or electrically charging the stent wall;
- (b) providing a conductive core wire located axially through the stent;
- (c) applying a potential to the conductive core wire to impart an electrical charge to the conductive core wire,
- (d) exposing the stent to an electrically charged coating formulation;
- and
- (e) depositing the charged coating formulation onto the stent portion to form a coating on the portion.
Dependencies are inferred from the claim text.