Features:
1. Transparent chest wall and made of special material,perspective effect of bilateral venous channel.
2. Correct anatomical position:basilic vein,cephalic vein,jugular vein,subclavian vein and superior vena.
3. Direct observation of rib and heart,measure the correct inserted length of catheter.
4. Transparent part of the superior vena and visible of the ductal position in the case of correct catheterization,of the catheter is invisible.
5. Exercise of standard venous catheterization position.
