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Journal of Bioactive and Compatible Polymers, Vol. 20, No. 1, 77-93 (2005)
DOI: 10.1177/0883911505049896

Crosslinked Polyurethane Coating on Vascular Stents for Enhanced X-ray Contrast

Alexey Kondyurin

Institute of Polymer Research Dresden, Hohe Strasse 6, Dresden 01069, Germany, kond{at}mailcity.com

Valentina Romanova

Natural Scientific Institute, Perm State University, Perm 614600, Russia

Valery Begishev

Natural Scientific Institute, Perm State University, Perm 614600, Russia

Irina Kondyurina

Institute of Continuous Media Mechanics, Perm 614013, Russia

Reinhard Guenzel

APT GmbH, Dresden 01314, Germany

Manfred F. Maitz

Institute of Ion Beam Physics and Materials Research, FZR, Dresden 01314, Germany

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.

Key Words: stents • polyurethane • polyurethaneurea • coatings • tantalum • X-ray • ion beam


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