Classification of vacuum blood collection vessels.

There are several problems that vacuum blood collection vessels may encounter during the blood collection process:

1. When vacuum blood collection is performed on the blood collection vessel for subcutaneous hematoma, the probability of subcutaneous hematoma occurrence is increased due to the patient's unclear blood vessels, the nurse's improper or inexperienced operating techniques, poor coagulation function of the patient, or improper pressing methods.

2. During the operation, the nurse was injured due to the soft rubber material of the vacuum blood collection plug, which could easily harm the nurse during the process of connecting the vacuum blood collection tube to the blood collection needle. Nurses may also be injured when checking for air leakage from the blood collection needle due to its rear end passing through an elastic protective cap.

3. Insufficient or excessive blood collection. If there is a lack of vacuum or insufficient vacuum in the vacuum collection vessel, coupled with the slant of the blood collection needle tightly adhering to the vessel wall, it can cause the patient's blood volume to be in a serious state of deficiency. Excessive blood collection is caused by excessive vacuum inside the vacuum collection vessel.