Novel combination of compression device and ChitoClot Pad can deliver more active and stronger coagulation effect. Continuous and stable compression can reduce patients’ blood loss and the risk of complications, such as limb swelling, limb numbness and cold limbs, etc. No time-consuming manual compression is needed. Smart rotating knob design enables medical staffs easily adjust according to patients’ hemorrhage condition at any time. Soft flannel belt can be used for a long time, and will not cause swelling, itch, irritation or allergy. Special Velcro can sustain vertical tensile force up to 15N.