Unique knotting training design, and five different types of cylinders constitute various knotting training spaces.
1. Available to practise knotting methods: knotting with single hand, knotting with both hands, knotting with instruments;
2. Available to practise knot types: single knot, square knot, triple knot and surgical knot, and identification false knot, slip knot;
3. Allow to simulate multiple knotting conditions: knotting in surgical small incision, knotting in deep abdominal cavity and pelvic cavity and angularly knotting in deep large incision, etc.