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Crosslinked Polyurethane for X Ray Contrast

Crosslinked polyurethane coating on vascular stents for enhanced X-ray contrast

Kondyurin A., Romanova V., Begishev V., Kondyurina I., Guenzel R., Maitz M.F.

J Bioact Compat Polym 20(1): 77-93 (2005)

A coating of polyurethaneurea was made from a solution on the surface of metal stents. The influence of cleaning, etching, chemical and ion beam modification (plasma immersion ion implantation) of the metal surface on the adhesion strength of the polyurethaneurea was analysed. Polyurethaneurea films imbedded with tantalum  particles as a radiopaque filler maintained their strength and elasticity and produced clear X-ray contrast images of vascular stents.

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