1. Disinfect the puncture point and fixed area with alcohol or according to relevant regulations.
2. Wipe the fixed area with skin protector and wait for complete drying.
3. Apply anti fixing pads to secure the suture holes.
4. Hold down the lower surface of the fixed pad and the catheter, and lock the fixator.
5. Tear off the paper behind the fixing pad and stick it to the skin.
6. Apply transparent film, fill in the maintenance information title, and stick it on the film to avoid errors.
7. When dismantling, the transparent film should be removed by stretching, and the alcohol cotton pad should be soaked and dissolved on the lower surface of the fixed pad until the fixed pad can be smoothly removed from the skin.
8. Fold the fixing pad, secure the catheter with your index finger, and open the latch with the other hand.
9. Remove the catheter from the latch, replace the retainer, or directly remove the catheter.