Scope of Application * Endoscope checks for chest and abdomen, Establish the working channel during chest and abdominal operation. Product Characteristics * Set a filter in exhaust to protect medical staff from pollution. * Perfect sealing design to keep pneumoperitoneum in operation. * Has protector which made by silicone. * Have a fixed trocar and an antiskid hole. * Single-use avoid cross infection. * Supply nice gas barrier property and sealing to make the operation safe.