Method for spray-coating medical devices
AssigneeSciMed Life Systems, Inc.
InventorHenrik Hansen
Life of this patent
Estimating the term…
Abstract
A method for spray-coating a medical device by using a nozzle apparatus having a chamber that is connected to at least one opening for dispensing a coating formulation. Such method comprises (a) grounding the surface of the medical device that is to be coated and (b) applying a coating formulation, which comprises a polymeric material and a solvent, by (1) providing the nozzle apparatus comprising a chamber connected to at least one opening for dispensing the coating formulation; (2) placing the coating formulation into the chamber; (3) electrically charging the coating formulation; (4) creating droplets of the electrically charged coating formulation; and (5) depositing the droplets of coating formulation onto the grounded surface to form a coating on the surface.
Claims16
A method for coating at least a portion of a medical device, wherein the portion has a surface adapted for exposure to body tissue of a patient, the method comprising:
- (a) grounding the surface;
- and
- (b) applying to the surface a coating formulation comprising a polymeric material comprising styrene-isobutylene-styrene and a solvent, said step of applying comprising the steps of
- (1) providing a nozzle apparatus comprising a chamber connected to at least one opening for dispensing the coating formulation;
- (2) placing the coating formulation into the chamber;
- (3) electrically charging the coating formulation;
- (4) creating droplets of the electrically charged coating formulation;
- and
- (5) depositing the droplets of coating formulation onto the grounded surface to form a coating on the surface.
A method for coating at least a portion of a medical device, wherein the portion has a surface adapted for exposure to body tissue of a patient, the method comprising:
- (a) grounding the surface;
- and
- (b) applying to the surface a coating formulation comprising a polymeric material comprising styrene-isobutylene-styrene, a biologically active material and a solvent, said step of applying comprising the steps of
- (1) providing a nozzle apparatus comprising an electrode and a chamber connected to at least one opening for dispensing the coating formulation;
- (2) placing the coating formulation into the chamber;
- (3) electrically charging the coating formulation by flowing the coating formulation across the electrode;
- (4) creating droplets of the electrically charged coating formulation;
- and
- (5) deposition the droplets of coating formulation onto the grounded surface to form a coating on the surface.
A method for coating a surface of an implantable stent, the method comprising:
- (a) grounding the surface;
- and
- (b) applying a coating formulation, which comprises a polymeric material comprising styrene-isobutylene-styrene, a biologically active material and a solvent to the surface, using a nozzle apparatus by:
- (1) providing the nozzle apparatus comprising a chamber connected to at least one opening for dispensing the coating formulation;
- (2) placing the coating formulation into the chamber;
- (3) electrically charging the coating formulation;
- (4) creating droplets of the electrically charged coating formulation;
- and
- (5) depositing the droplets of coating formulation onto the grounded surface to form a coating on the surface.
Dependencies are inferred from the claim text.