A device (2) for bringing a first vessel member (6, 26) in fluid communication with a needle member (4), which device (2) includes an adaptor (20) having a housing (14) with a holding arrangement (16, 18) configured to secure the needle (4) to the housing (14), where the housing (14) has at least a first opening (38, 40) sealed by a seal (10, 12) a cutting device (32, 34) configured to perforate the seal (10, 12). The cutting device (32, 34) is configured to perforate the seal (10, 12) and thereby break the seal (10, 12) by bringing the seal (10, 12) into contact with the cutting device (32, 34) by moving the adaptor (20) towards the vessel member (6, 26) in a manner in which the needle member (4) is not brought into contact with the seal (10, 12).
