| 20Gx3cm | 20Gx5cm | 20Gx7.5cm | 20Gx10cm | 20Gx15cm |
| 21Gx3cm | 21Gx5cm | 21Gx7.5cm | 21Gx10cm |
| 20 G × 5 cm, provided with 23 G Reinforced Cannula | 20 G × 7.5 cm, provided with 23 G Reinforced Cannula | 20 G × 10 cm, provided with 23 G Reinforced Cannula | 20 G × 12.5 cm, provided with 23 G Reinforced Cannula |
· Two markings on the guidewire: "I" indicates that the guidewire is located at the distal end of the needle, and "II" indicates that a distal barb is provided.
· Standard marking cannula on the guidewire: Used as a marking for surgeons during resection, starting at 3 cm away from the distal end.
· Skin fixation clamp: Prevent the guidewire from moving during patient transport.
· Echo tip of outer cannula, with depth marking (cm): Easy to determine the needle insertion position.