A connection device for a medical line including a first portion with a first passage duct, the first portion configured to couple with a first medical line to allow a flow of a fluid, and a second portion configured to couple with the first portion, and including a second passage duct that is arranged to connect with a second medical line. Furthermore, the connection device includes a releasable connection to connect the first portion and the second portion, from a coupled configuration, to a decoupled configuration.
