Coating processes – Medical or dental purpose product; parts; subcombinations;... – Implantable permanent prosthesis
Reexamination Certificate
2005-12-27
2005-12-27
Chen, Bret (Department: 1762)
Coating processes
Medical or dental purpose product; parts; subcombinations;...
Implantable permanent prosthesis
C427S002250, C427S421100
Reexamination Certificate
active
06979473
ABSTRACT:
A method for spray deposition of small targets, such as medical devices like stents. The method includes the steps of positioning a spray nozzle body, which has a fine bore diameter to pressurize the coating material within the nozzle body, near a medical device, and dampening vibration of the nozzle body during operation by maintaining a steady back pressure in the coating material line sufficient to eliminate or minimize vibration modes from external and internal sources; and stabilizing the spray coating plume. In another embodiment, a coating method is disclosed in which a finer atomized spray droplet size is achieved by pre-filming the coating material onto a flat face before entraining the coating material within the atomizing fluid, which improves manufacturing repeatability, reduces coating variances, and increases therapeutic dosage predictability. In certain embodiments of the invention, the coating materials include therapeutic agents and biologically active materials.
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O'Connor Tim
Sobrino Gabriel
Boston Scientific SciMed, Inc.
Chen Bret
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