A coupling system for connecting a tube set to a trocar comprising: a) a multi-lumen trocar having a housing that includes a connector extending outwardly from the housing, the connector having a plurality of coaxial flow passages defined therein by a plurality of concentric annular walls; b) a multi-lumen tube set including a plurality of tubes arranged in a parallel relationship; c) a coupling including a generally cylindrical body having a first end portion configured to selectively mate with the coaxial flow passages of the connector of the trocar and a second end portion configured for attachment to the tubes of the tube set; characterized by d) a latch assembly (262, 264, 272, 274) operatively associated with the cylindrical body of the coupling for selectively engaging the connector of the trocar housing when the coupling mates with the connector, wherein a plurality of circumferentially spaced apart radially outwardly extending posts are provided on an exterior wall of the connector of the trocar, and wherein the latch assembly (262, 264, 272, 274) includes a pair of diametrically opposed spring loaded latches (262, 264) for selectively engaging the plurality of posts on the exterior wall of the connector of the trocar housing when the coupling mates with the connector, wherein a spring (282, 284) is positioned between each latch (262, 264) and the cylindrical body of the coupling to allow the latches (262, 264) to be spring-loaded, and each latch (262, 264) includes a locking feature (283, 285), the locking features (283, 285) being movable between a locking position resting against a surface of the connector and a separated position when the springs (282, 284) are compressed. a) a multi-lumen trocar having a housing that includes a connector extending outwardly from the housing, the connector having a plurality of coaxial flow passages defined therein by a plurality of concentric annular walls; b) a multi-lumen tube set including a plurality of tubes arranged in a parallel relationship; c) a coupling including a generally cylindrical body having a first end portion configured to selectively mate with the coaxial flow passages of the connector of the trocar and a second end portion configured for attachment to the tubes of the tube set; characterized by d) a latch assembly (262, 264, 272, 274) operatively associated with the cylindrical body of the coupling for selectively engaging the connector of the trocar housing when the coupling mates with the connector, wherein a plurality of circumferentially spaced apart radially outwardly extending posts are provided on an exterior wall of the connector of the trocar, and wherein the latch assembly (262, 264, 272, 274) includes a pair of diametrically opposed spring loaded latches (262, 264) for selectively engaging the plurality of posts on the exterior wall of the connector of the trocar housing when the coupling mates with the connector, wherein a spring (282, 284) is positioned between each latch (262, 264) and the cylindrical body of the coupling to allow the latches (262, 264) to be spring-loaded, and each latch (262, 264) includes a locking feature (283, 285), the locking features (283, 285) being movable between a locking position resting against a surface of the connector and a separated position when the springs (282, 284) are compressed.