Title:
COATING MEDICAL DEVICES
Document Type and Number:
WIPO Patent Application WO2004047882
Kind Code:
A3
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).
Inventors:
PUI DAVID Y H
CHEN DA-REN
CHEN DA-REN
Application Number:
PCT/US2003/036717
Publication Date:
July 15, 2004
Filing Date:
November 18, 2003
Export Citation:
Assignee:
UNIV MINNESOTA (US)
International Classes:
A61L31/10; A61L31/16; B05B5/025; B05B5/08; A61F2/86; (IPC1-7): A61L31/16; A61L29/16; A61L27/54; B05B5/025
Domestic Patent References:
| WO2003082363A1 | 2003-10-09 | |||
| WO2001087491A1 | 2001-11-22 |
Foreign References:
| US20030143315A1 | 2003-07-31 | |||
| US20020007869A1 | 2002-01-24 |
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