Sealed double-door connection device with reinforced security

A chamber defining a first closed volume and including a sealed connection device including a first flange and a first door configured to plug said first flange, said first flange including a bayonet connection for an object, said object including a second flange configured to be plugged by a second door, the second flange being provided with a first number of lugs intended to cooperate with the bayonet connection of the first flange, said first flange including the first number of detectors, wherein each detector of the first number of detectors is configured to detect a presence of each lug of the first number of lugs, said connection device being mounted in a wall of said chamber and includes an element configured to be moved by the presence of each lug of the first number of lugs and a sensor for detecting a movement of the element, wherein the element is a rod capable of sliding radially, wherein one longitudinal end of the rod is configured to be pushed back radially outwards by the lug, and wherein another longitudinal end of the rod is detected by the sensor, and wherein a spring is configured to exert a stress radially inwards on the element.