The TRU-CLOSE Suction Drainage System is designed to be a completely closed system for abscess and other fluid drainage. Compact and self-contained system allows full patient ambulation. During activation, body fluids are not aerosolized because all fluids are contained in the system. Closed system design reduces the chances of cross-contamination. Dual anti-reflux valves prevent liquids and air from backing up into the catheter or wound drain. All TCS bags come with a standard luer lock connector to fit all luer-locking drainage catheters. In addition to the standard luer lock connector, the TCS300D comes with two straight connectors to be used with post surgical wound drains. If the bellows fills, flow to the bag continues via gravity drainage as long as the bag is below the level of the drainage site.