Table 1.
Esophageal Stents Currently Available in the United States
| Manufacturer and product name | Material and design | Outer diameter (mm) | Length (cm) | Introducer diameter (mm) |
|---|---|---|---|---|
| Boston Scientific | ||||
| Polyflex Esophageal Stent* | Polyester/silicone | 16 (proximal flare, 20) 18 (proximal flare, 23) 21 (proximal flare, 25) |
9, 12, 15 | 12, 14 |
| Ultraflex Esophageal NG Stent System (covered)** | Nitinol (polyurethane) | 18 (proximal flare, 23) 23 (proximal flare, 28) |
10 (covered portion, 7) 12 (covered portion, 9) 15 (covered portion, 12) |
6 |
| Ultraflex Esophageal NG Stent System (noncovered)** | Nitinol | 18 (proximal flare, 23) | 7, 10, 12, 15 | 6 |
| WallFlex Partially Covered Esophageal Stent† | Nitinol (silicone-coated, wire-braided, removal suture) | 18 (proximal flare, 23) 23 (proximal flare, 28) |
10 (covered portion, 7) 12 (covered portion, 9) 15 (covered portion, 12) |
6 |
| WallFlex Fully Covered Esophageal Stent | Nitinol (silicone-coated, wire-braided, removal suture) | 18 (proximal flare, 25) 23 (proximal flare, 28) |
10, 12, 15 | 6 |
| Cook Medical | ||||
| Esophageal Z-Stent with Dua Anti-Reflux Valve‡ | Stainless steel (polyurethane coating) | 18 (proximal flare, 25) | 8, 10, 12, 14 | 10 |
| Evolution Esophageal Fully Covered Controlled-Release Stent¶ | Nitinol (internal and external silicone coating) | 18 (flange, 23) 20 (flange, 25) |
8, 10, 12 | 8 |
| Evolution Esophageal Partially Covered Controlled-Release Stent¶ | Nitinol (internal and external silicone coating) | 20 (flange, 25) | 8, 10, 12.5, 15 | 8 |
| EndoChoice | ||||
| Bonastent Esophageal Stent | Nitinol (silicone coating) | 18 | 6, 8, 10, 12, 14, 16 | 6 |
| Merit Medical Endotek | ||||
| Alimaxx-ES Fully Covered Esophageal Stent | Nitinol (covered with polyurethane) | 12, 14, 16, 18, 22 | 7, 10, 12 | 5.3 |
| Taewoong Medical Co | ||||
| Niti-S Esophageal Double Stent | Inner, covered layer: polyurethane; outer, uncovered layer: nitinol wire | 16 (ends, 24) 18 (ends, 26) 20 (ends, 28) |
Inner layer, 6; outer layer, 1.5 Inner layer, 8; outer layer, 2.5 Inner layer, 10; outer layer, 3.5 Inner layer, 12; outer layer, 4.5 Inner layer, 15; outer layer, 7 |
5.8, 6.5 |
| Niti-S Esophageal Covered Stent (fully covered)§ | Nitinol (completely covered with polyurethane) | 16 (ends, 24) 18 (ends, 26) 20 (ends, 28) |
6, 8, 10, 12, 15 | 5.8, 6.5 |
| Niti-S Esophageal Covered Stent (antireflux) | Nitinol (covered with polyurethane) and a polytetrafluoroethylene antireflux skirt¥ | 16 (ends, 24) 18 (ends, 26) 20 (ends, 28) |
6, 8, 10, 12, 15 | 5.8, 6.5 |
*
Indicated for the management of refractory benign strictures.
**
Available as a proximal-release stent.
†
Reconstrainable for up to 75% of deployment.
‡
The antireflux valve has a 1-way windsock design.
¶
Can be recaptured to position.
§
Available as proximal- and distal-release stents; reconstrainable for up to 50% of deployment.
¥
The skirt has a length of 4 cm and a diameter of 1.6 cm or 2.6 cm.