Device for connection between a receptacle and a container and ready-to use assembly comprising same

摘要

The invention concerns a connection device comprising a base ( 10 ) adapted to be mounted on a receptacle ( 2 ) and forming a sliding sleeve ( 15 ) for a piston ( 16 ) which moves or forms a hollow needle ( 16 ), an annular skirt ( 20 ) for locking the base plate ( 10 ) in snap-on configuration on the neck ( 4 ), and a cap ( 30 ) designed to isolate the plate ( 10 ) and/or the piston ( 16 ) from ambient atmosphere. The cap ( 30 ) is provided with at least one protuberance ( 33 ) designed to be engaged in the internal volume (V) of said skirt ( 20 ), said protuberance ( 33 ) extending radially relatively to a central axis (X-X') of the cap ( 30 ) over a distance (R₃₃) greater than the minimum distance (R₂₅) between said central axis (X-X') and an edge ( 23 ) of the opening (O') providing access to the internal volume (V) of said skirt. The protuberance remains integral with the rest ( 31 a) of the cap when the latter is removed from the device. Once the cap ( 30 ) is removed from the skirt ( 20 ), the protuberance counters its re-insertion into the internal volume (V) of the skirt.