Radiopaque coatings for polymer substrates
OwnerDaniel Storey, Terrence McGrathinventors
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Abstract
Improved radiopaque coatings particularly suitable for polymer substrates are described. A modified ion plasma deposition (IPD) method is used to provide coatings with macroparticle-dense surfaces that have excellent radiopacity. The coatings are particularly adapted to polymer surfaces because of high adherence and resistance to peeling and flaking.
Claims18
An ion plasma deposition (IPD) method for depositing a radiopaque coating on a polymer substrate, comprising:
- depositing a first substantially macroparticle-free coating on a polymer substrate;
- depositing a second macrodense macroparticle coating over the first coating;
- forming a coating to a thickness between about 1 micron to about 100 microns;
- wherein arc speed or distance of the substrate surface from the IPD target controls macroparticle production and density.
A polymer substrate coated with a radiopaque film comprising a densely distributed macroparticulate film surface over a substantially macroparticle-free adherent base coating continuous with the film surface.
Dependencies are inferred from the claim text.