Features;
- Structure: covered stent with Comvi structure and uncovered stent with D structure.
- Comvi structure has 3 layers: D-type (outside), PTFE membrane (second layer), S-type (inside)
- Removal string: reposition or removal of stent
- Tracheal stent was designed with distal side flare, include covered and uncovered stent. Radiopaque marker: 4 at the both ends & 4 at the middle.
- Bronchial stent: straight (full covered with comvi structure) and both flare (uncovered). Radiopaque marker: 4 at the both ends & 2 at the middle.