Enteral stents for the management of malignant colorectal obstruction

Table 1 Commercially available self-expandable metal stent for malignant colonic obstruction

Manufacturer model	Delivery system	Diameter (mm)	Flares/flanges	Length (mm)	Covered/uncovered
WallFlex1 (Boston Scientific)	TTS	22/27	Present	60, 90, 120	Uncovered
Ultraflex Precision1 (Boston Scientific)	OTW	25/30	Present	57, 87, 117	Uncovered
Wallstent endoprosthesis1 (Boston Scientific)	TTS	20, 22; no flare	Absent	60, 90	Uncovered
D-Enteral Colonic Stent (Taewoong Medical)	TTS/OTW	18, 20, 22, 24, 26	Absent	60, 80, 100, 120, 140, 150	Uncovered
Comvi Colonic Stent (Taewoong Medical)	TTS/OTW	18, 20, 22, 24, 26, 28	Absent	60, 80, 100, 120	Partially Covered
S-Enteral Colonic Stent (Taewoong Medical)	TTS/OTW	18, 20, 22, 24, 26, 28	Present	60, 80, 100, 120, 140, 150, 230	Fully and Partially Covered
Evolution Colonic Stent (Cook Endoscopy)	TTS	25	Present	60, 80, 100	Uncovered
Colonic Z-Stent1 (Cook Endoscopy)	TTS	25	Present	40, 60, 80, 100, 120	Uncovered
Hanarostent (M.I.Tech)	TTS/OTW	20, 22, 24	Present	60, 70, 80, 90, 100, 110, 120, 130, 140, 150, 160, 170, 180	Uncovered, Fully Covered
Enterella (ELLA-CS)	OTW	22, 25, 30	Absent	75, 82, 88, 90, 112, 113, 123, 135, 136	Uncovered, Covered
Bonastent (EndoChoice)	TTS	22, 24, 26	Absent	60, 80, 100	Uncovered, Partially Covered
Aixstent (Leufen Medical)	TTS/OTW	25, 30	Present	80, 100	Uncovered, Partially Covered
Micro-Tech (MICRO-TECH Europe)	TTS/OTW	20, 25, 30	Present	60, 80, 100, 120	Uncovered, Partially Covered, Fully Covered

¹Colonic stents availabe in the United States. TTS: Through-the-scope; OTW: Over-the wire.