Table 1: Examples of current-generation drug-eluting stents and their physical properties.

	BioFreedom/LUMENO Free	BioMatrix/Nobori	Orsiro	Promus PREMIER	Resolute Onyx	SYNERGY	Ultimaster	XIENCE Sierra	Xposition S
Manufacturer	Biosensors/Cordis	Biosensors/Terumo	Biotronik	Boston Scientific	Medtronic	Boston Scientific	Terumo	Abbott	Stentys
Design
Material	316L SS*	316L SS*	L605 CoCr†	PtCr‡	MP35N CoCr§ (outer shell); PtIr core	PtCr‡	L605 CoCr†	L605 CoCr†	NiTi (nitinol)
Thickness of struts (μm)	112	112	60–80	81–86	81	74–81	80	81	102–133
Polymer	Polymer-free	PLA	PLLA	PBMA, PVDF-HFP	BioLinx	85:15 PLGA	PLCL	Fluoropolymer
Polymer degradation	Polymer-free	Bioresorbable	Bioresorbable	Permanent	Permanent	Bioresorbable	Bioresorbable	Permanent	Bioresorbable
Polymer thickness (μm)	Polymer-free	11	7.4	8	12	4	15	16	–
Drug	Biolimus A9	Biolimus A9	Everolimus	Everolimus	Zotarolimus	Everolimus	Sirolimus	Everolimus	Sirolimus

*316L SS: 64% iron, 18% chromium, 14% nickel, 2.6% molybdenum, 2% (max) manganese.

†L605 CoCr: 52% cobalt, 20% chromium, 15% tungsten, 10% nickel, 3% (max) iron, 1.5% (max) manganese.

‡PtCr: 37% iron, 33% platinum, 18% chromium, 9% nickel, 2.6% molybdenum, 0.05% (max) manganese.

§MP35N CoCr: 35% nickel, 34% cobalt, 20% chromium 9.75% molybdenum, 1% (max) iron, 1% (max) titanium, 0.15% (max) manganese.

CoCr = cobalt–chromium; HFP = hexafluoropropylene; NiTi = nickel–titanium; PLA = polylactic acid; PLCL = poly (D,L-lactide-co-caprolactone); PLGA = poly(D,L-lactide-coglycolide); PLLA = poly-L-lactic acid; PBMA = poly (n-butyl methacrylate); PtCr = platinum–chromium; PtIr = platinum–iridium; PVDF = polyvinylidene fluoride; SS = stainless steel.