JY-Multi functional abdomen retractors 1. Acquires four Chinese patented. 2. The retractor is ideal for upper abdominal surgery where the good exposure is important. 3. Conveniently located anywhere on the table for consistent, which can save the manpower. 4. Hands-free exposure. 5. Fully adjustable for any approach and any patient size. 6. Adjustments to blades are flexible, quick and positive