1. This product includes silicone reservoir, silicone flat drains or other silicone drains and stainless steel trocar. 2. Can use separately or using trocar for insertion and combining with silicone reservoir for fluids suction and collection. 3. Provided with internal anti-reflux valve to prevent backflow of fluid to the patient. 4. Silicone bulbs are suitable for plastic surgery, neurosurgery, orthopaedics, OB/GYN surgery and laparoscopic surgery.