Coupling for connecting a tube set to a trocar

摘要

A coupling system is provided for connecting a tube set to a trocar that includes a multi-lumen trocar having a housing that includes a connector, wherein the connector has a plurality of coaxial flow passages defined therein by a plurality of concentric annular walls, a multi-lumen tube set including a plurality of tubes arranged in a parallel relationship, and 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 parallel tubes of the tube set.

主权项

1. A coupling system for connecting a tube set to a trocar comprising:
a) a multi-lumen trocar having a housing that defines a central axis and includes a connector, the connector extending radially outwardly from the central axis of the housing and having a plurality of coaxial flow passages defined therein by a plurality of concentric annular walls, wherein the connector has a longitudinal axis that extends perpendicular to the central axis of the housing of the trocar, and the coaxial flow passages of the connector are axially aligned with the longitudinal axis of the connector, wherein the plurality of coaxial flow passages of the connector includes a central flow passage defined by an inner annular wall, a medial flow passage defined between a medial annular wall and the inner annular wall, and an outer flow passage defined between an outer annular wall and the medial annular wall; b) a multi-lumen tube set including a plurality of tubes arranged in a parallel relationship; and c) a coupling including a generally cylindrical body having a first end portion adapted and configured to selectively mate with the coaxial flow passages of the connector of the trocar and a second end portion adapted and configured for attachment to the parallel tubes of the tube set, wherein the first end portion of the body of the coupling has a plurality of flow passages including an inner flow passage defined by an inner annular wall for establishing fluid communication with the central flow passage of the connector, a medial flow passage defined between a medial annular wall and the inner annular wall and surrounding the inner flow passage of the coupling for establishing fluid communication with the medial flow passage of the connector, and an outer flow passage defined between an outer annular wall and the medial annular wall and surrounding the medial flow passage of the coupling for establishing fluid communication with the outer flow passage of the connector.