Evaluation of anti-migration properties of biliary covered self-expandable metal stents

Table 1 The biliary covered self-expandable metal stents that were tested

C-SEMS	Structure	Stent material	Cover material	ODF (mm)	HF (mm)	TAF (degree)	Manufacturer
Wallflex stent (fully covered)	Braided	Platinum-cored nitinol	Silicone	11.8	1.9	11.3	Boston scientific
	Cross wire
BONA stent	Braided	Nitinol	Silicone	13.4	3.2	21.8	Standard Sci Tech
	Cross and hook wire
HANARO stent	Braided	Nitinol	Silicone	13.4	3.2	16.7	M.I. Tech
	Cross and hook wire
ComVi stent	Braided	Nitinol	e-PTFE	9.7	0	0	Taewoong
	Hook wire
SUPREMO stent	Braided	Nitinol	Silicone	12.2	2	16.7	Taewoong
	Hook wire
ZEO stent	Laser-cut	Nitinol	Polyurethane	11.1	1.9	26.6	Zeon

All stents are 10 mm in diameter × 80 mm in length. C-SEMS: Covered self-expandable metal stent; e-PTFE: Expanded polytetrafluoroethylene; HF: Height of the flare; ODF: Outer diameter of the flare; TAF: Taper angle of the flare.