•The upper ring folds in, on and out, and attaches the polyurethane film to the wound lips
•Soft and hard structure is produced
•Polyurethane file wraps the wound lips well and makes buffer for bleeding
•Protect the wound lips against contamination.Maintain moisture
•Provide excellent appearance in incision area.
•The bottom ring is made of polyurethane and has a flexible structure
•Easy to pass through the small size incision
•Provide a variety of specifications of fixed height and unfixed height for clinical operation