Coating medical devices

Details Coating medical devices Coating medical devices

2006-03-28

2011-10-04

Edwards, Laura (Department: 1713)

Coating apparatus

With vacuum or fluid pressure chamber

With means to apply electrical and/or radiant energy to work...

C118S622000, C118S626000, C118S629000, C118S308000, C118S315000

Reexamination Certificate

active

08028646

ABSTRACT:
Methods and systems for coating at least a portion of a medical device (e.g., a stent structure) include providing a plurality of coating particles (e.g., monodisperse coating particles) in a defined volume. For example, the particles may be provided using one or more nozzle structures, wherein each nozzle structure includes at least one opening terminating at a dispensing end. The plurality of coating particles may be provided in the defined volume by dispensing a plurality of microdroplets having an electrical charge associated therewith from the dispensing ends of the one or more nozzle structures through use of a nonuniform electrical field between the dispensing ends and the medical device. Electrical charge is concentrated on the particle as the microdroplet evaporates. With a plurality of coating particles provided in the defined volume, such particles can be moved towards at least one surface of the medical device to form a coating thereon (e.g., using an electric field and/or a thermophoretic effect).

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