Features：
1. The model lies in supine position, head tilting toward left. Soft material makes real skin touch
2. Clear anatomical landmarks, including clavicle,
sternocleidomastoid, suprasternal fossa, umbilicus,
groin, inguinal ligament
3. Pulse of carotid and femoral artery are electronically simulated
4. Jugular puncturing, subclavian vein puncturing,
external jugular puncturing, femoral vein puncturing
could be practiced. An absence of resistance would
come when puncturing successfully and simulated
blood can be extracted
5. Cardiac floating catheter operation