Table 2.
Performance comparison.
| Name | Disposable superfine catheter system for visual examination of bile and pancreatic ducts | SpyGlass™ DS |
|---|---|---|
| Technical performance | ||
| Number of surgeons | One | One |
| Operation | Simple and flexible | Complex |
| Choledochoscope diameter | 2.4 mm | 3.5 mm |
| Pixels | 16*104 | 12*104 |
| Depth of field | 0.3–20 mm | Low |
| Frond-end direction adjustment | Guidewire adjustment | Four-quadrant adjustment |
| Front-end flexibility | Good | Hard |
| Tilting up angle | >90° | 30–40° |
| Water injection rate | 0.8 mL/s | 0.7 mL/s |
| Water injection distance | 10.0 cm | 7.0 cm |
| Cost | Low | High |
| Categorization | Accessory/consumable | Choledochoscope |