A device (1) for the containment of platelet concentrates includes at least a bag (2) defining at least a containment chamber (3) having at least a mouth (4) for the entry of a platelet concentrate and at least a connection element for connection to an infusion line associated with the bag in correspondence to the mouth the connection element includes a first and a second portion (5a, 5b) integrally associated together and includes at least a constantly open duct (6), passing through the first and the second portion and communicating with the chamber, where the first portion is associable with the infusion line and the second portion is associated with the bag in correspondence to the mouth, the first portion being separable from the second portion in such a way to interrupt the duct and define an opening (8) accessible from outside and including closing element (9) of the opening.
