Features:

1. Unique knotting training design, made from transparent materials, and two different types of cylinders constitute various knotting training spaces

2. Unique tension system to imitate different tissue tension, and equipped with warning system

3. The simulated blood vessel filled with simulative blood is of high resilience, and strong sense of reality while operation and it is easy for replacement;

4. Allow to simulate multiple knotting conditions and practice different knotting methods