Method for applying a coating to a medical device

Details Method for applying a coating to a medical device Method for applying a coating to a medical device

2007-05-01

2007-05-01

Lamb, Brenda A. (Department: 1734)

Coating apparatus

Immersion or work-confined pool type

With tank structure, liquid supply, control, and/or...

C134S901000

Reexamination Certificate

active

11029619

ABSTRACT:
This invention provides a method for efficiently applying a coating to each of a plurality of objects selected from the group consisting of ophthalmic lenses, molds for making ophthalmic lenses, and other medical devices, the method comprising dipping the plurality of objects into a coating bath containing a coating solution having a coating material; and creating with a means a convective current flow and thereby forcing a coating solution flowing over and under each of the plurality of ophthalmic lenses. In a preferred embodiment, the plurality of objects are held in baskets which are pre-conditioned to have a first layer of polyelectrolytes and a second layer of aqueous solution or have a mixed layer of polyelectrolytes and aqueous solution on the surfaces of the baskets.

REFERENCES:
patent: 4575299 (1986-03-01), Layton et al.
patent: 4691725 (1987-09-01), Parisi
patent: 4710199 (1987-12-01), Suter
patent: 5339843 (1994-08-01), Benedict et al.
patent: 5824276 (1998-10-01), Janssen et al.

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