Assertion: stent | /r/HasProperty | classified according self-expanding
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Source sentences:
text: Stents can be classified according to their mechanism of expansion (self-expanding or balloonexpandable), their composition (stainless steel, cobalt-based alloy, tantalum, nitinol, inert coating, active coating, or biodegradable), and their design (mesh structure, coil, slotted tube, ring, multi-design, or custom design) ( Table1 ).