Use steps of blood sampling needle:
1) Remove the arterial blood collection needle from the aseptic package.
2) Remove the arterial blood sampling needle cap and place it in an appropriate position.
3) Push the needle cap outward.
4) Push the core rod forward to the zero scale before pulling back the preset to the required scale.
5) The arterial blood lancet is downwards and the puncture is performed at an Angle of 45° to 90°.
6) Fill the sample with a preset scale at arterial pressure.
7) After the collection of samples, immediately pull out the arterial blood sampling needle head and press the puncture point with gauze for at least 5 minutes to prevent bleeding.