Features：
1. Precise anatomical structure, shoulder blade, clavicle, humerus, the
deltoid, the biceps brachii and shoulder joint ligament
2. Practise shoulder joint puncture
3. 6 puncture positions:
① Shoulder joint cavity (front)
② Shoulder joint cavity (rear)
③ Subacromial bursa
④ Shoulder lock joint
⑤ Tendon sheath
⑥ Nerve block on the shoulder
4. Electronic monitoring with light indication