Abstract:

Aim: was to study properties of nanostructured carbon coating stents in coronary arteries with the help of intravascular ultrasonic visualization.

Materials and Methods: experimental implantation of stents in coronary artery was performed on 8 yearling sheep. Estimation of bioinertness properties of stents was made by intravascular ultrasonic method on the 14, 28, 180 day. Bioinertness properties were estimated in comparison with analogical bare-metal stents.

Results: The analysis of results showed that in early stages (up to 28 days) experimental samples of stents cause less formation of trombus than simple balloon-extendable stents. In the period of late outcomes, coronary nanostructured carbon coating stents have lower level of «in-stent stenosis».

Conclusion: stent implantation with nanostructured carbon coating does not prevent the natural reparative processes taking place in the artery wall, does not cause the formation of thrombotic masses under standard doses of antiaggregants. Experimental stents significantly less affected in-stent stenosis, than stents without surface modification, indicating their higher bioinertness. 

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