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Expert Rev Med Devices. 2006 Nov;3(6):731-41.

BioMatrix Biolimus A9-eluting coronary stent: a next-generation drug-eluting stent for coronary artery disease.

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HELIOS Heart Center Siegburg, Department of Cardiology/Angiology, Ringstrasse 49, 53721 Siegburg, Germany.


Drug-eluting stent technology consisting of a bare metal stent, carrier coating, bioactive drug and delivery system, offers an almost infinite range of possible device configurations. A growing understanding of the mechanisms of restenosis allows for the design of synergistic functions within these components, thus providing a basis for new and improved products. The BioMatrix stent (Biosensors Interventional Technologies Pte Ltd., Singapore) elutes the new sirolimus derivative Biolimus A9 from a biodegradable polylactic acid polymer. Biolimus A9 possesses enhanced anti-inflammatory and antiproliferative activity with an improved pharmacokinetic profile. Permanent polymer-carrier-based platforms may be associated with inflammation, late thrombosis and restenosis. The BioMatrix, with its asymmetric and abluminal coating, releases Biolimus A9 into the vessel wall while the polylactic acid polymer is resorbed by surrounding tissues. Clinical studies have demonstrated the BioMatrix to be well tolerated and effective, and it has now become the subject of an aggressive clinical program.

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