The model is composed of a simulated arm and a peristaltic pump (electronic blood circulation device). It has the blood

circulation function generated by real hemodynamics, and has the characteristics of realistic operation and powerful

functions. Features: 1.The eight main venous blood vessel systems distributed on the arm

can perform puncture training functions such as intravenous injection,

infusion (blood), and blood drawing;

2.Demonstrate blood circulation function;

3.Intramuscular injection can be performed in the deltoid muscle;

4.The upper limb can be rotated 180 degrees, which can imitate the

rotation of a real arm and facilitate puncture practice;

5.There is an obvious feeling of failure when inserting the needle, and

there is obvious blood return when puncture is performed correctly;

6.The same puncture site of veins and skin can withstand hundreds of

repeated punctures without leakage;

7.Both veins and skin can be replaced, which is simple, convenient, economical and practical.