Connection of an accessory to a vessel

Device (1) for connection to a receptacle (2) of an accessory (3) whose active proximal part (9) is able to be in put into communication with the inside (4) of the receptacle (2) by means of an opening (7) of the receptacle (2), whereby the device comprises a first element (15), a second element (16), a third element (17), and a chamber (18), in which:

• The first element (15) has the following functions:
• Ensuring the rigid attachment of the connecting device (1) to the receptacle (2),
• Defining a channel (22) between the inside (4) and the outside (8) of the receptacle (2),
• Serving as a support for the second element (16) and an axial movement guide on an axial course C of which the two ends of travel correspond to a first distal state and to a second proximal state,
• Helping to serve as a guide for the third element (17),
• Helping to delimit the chamber (18),
• The second element (16) has the following functions:
• Serving as a support to the third element (17), which is attached rigidly to it,
• Forming a moving, axially sliding element on the course C whose two ends of travel correspond to the first distal state and the second proximal state,
• The third element (17), to which a top (14) belongs, has the following functions:
• Serving as a support to the accessory (3), which is attached rigidly to it,
• Forming a moving, axially sliding element on the course C whose two ends of travel correspond to the first distal state and the second proximal state,
• In the first distal state, ensuring, using the top (14), the airtight closing of the opening (7),
• In the second proximal state, ensuring, using the top (14), a protection of the active proximal part (9),
• Helping to delimit the chamber (18),
• The chamber (18) is closed in an airtight manner in the first distal state and is in communication with the inside (4) in the second proximal state and has the function of housing the active proximal part (9) inside or placing it on the periphery, and, if necessary,
• Putting a storage liquid therein,
• Putting a liquid for regulating, monitoring or calibrating the accessory (3) therein or constituting a chamber (18) that is closed in an airtight manner in which the accessory (3) is placed on standby for use.