Medical devices having adherent polymeric layers with...

Details Medical devices having adherent polymeric layers with... Medical devices having adherent polymeric layers with...

2011-04-05

2011-04-05

Ahmed, Shamim (Department: 1713)

Coating processes

Medical or dental purpose product; parts; subcombinations;...

C427S500000

Reexamination Certificate

active

07919137

ABSTRACT:
According to one aspect of the invention, a method of forming a medical device is provided, which includes: (a) contacting a substrate with a solution that contains (i) one or more types of polymers, (ii) a solvent that contains one or more types of solvent species, and (iii) one or more optional agents, for example, one or more therapeutic agents, among others; and (b) removing the solvent from the solution, thereby forming a polymeric layer on the substrate. The composition of the solution is changed over the course of forming the polymeric layer. In another aspect of the invention, a medical device is provided, which includes a substrate and a polymeric layer over the substrate. The polymeric layer contains a copolymer that contains differing first and second monomers. The lower surface of the polymeric layer contacting the substrate has a surface concentration of the first monomer relative to the second monomer that is higher than that of the upper surface of the polymeric layer opposite the substrate.

REFERENCES:
patent: 5733925 (1998-03-01), Kunz et al.
patent: 6545097 (2003-04-01), Pinchuk et al.
patent: 2003/0203000 (2003-10-01), Schwarz et al.
patent: 2005/0196518 (2005-09-01), Stenzel
patent: 2006/0193890 (2006-08-01), Owens et al.
patent: 2006/0229601 (2006-10-01), Swoyer et al.
patent: 2006/0235503 (2006-10-01), Llanos et al.
L.R. Snyder, “Classification of the Solvent Properties of Common Liquids,”Journal of Chromatographic Science, vol. 16, Jun. 1978, pp. 223-234.

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