Abstract: A connecting system for gas lines for respirator or anesthesia apparatus comprising with at least two connecting elements which can be plugged into each other, a first connecting element comprising a Y-piece with an inhalation hose socket, exhalation hose socket and a connector extension piece, and a second connecting element comprising a second connector adapted to be connected with the connector extension piece, the second connector having a tube extension for an endotracheal tube, the first connecting element having at least one resilient securing element which resiliently engages under the force of a spring an annular groove in the outer wall of the second connecting element, and at least one manually operable unlocking element which temporarily overcomes the spring force of the securing element, the first and second connecting elements being freely rotatable in respect to each other.

Abstract: A connection system for respirator or anesthesia units with a Y-piece including an inhalation hose socket, an exhalation hose socket and a connector attachment piece as well as a tubular connector, connectable with the connector attachment piece, having a tube attachment for an endotracheal tube at one end, and at its opposite end a continuous annular groove in its exterior circumference, the connector attachment piece including a spring biased fastening member provided transversely to the longitudinal axis of the connector attachment piece for elastically engaging the annular groove under spring action. The connection system further includes a hand-operable unfastening mechanism for overriding the spring action of the fastening member, and the fastening member includes a lever having inner and outer arms, a pivot and a spring-loading member for the outer arm.