Insert drug infusion

Insert (20) for the infusion of drugs, suitable for connection to a vial (18), the insert (20) a main body (22), a resilient element (24) and a spike drill (26) comprising, in the barb drill (26) has an X axis and defines a first channel (261) and a second channel (262) and is movable relative to the main body (22) along the X axis between a first closed position ( A) and a second open position (B); and wherein the resilient member (24) presses against the piercing spike (26) to maintain in the first closed position (A) when no external forces are applied; characterized in that the resilient element (24) defines a seat (246) within which the spike (26) sits, and that the resilient element (24) internally defining a first channel (241) and a second channel (242), connecting channels (241) and (242) seat (246) with the outside of the insert (20), because, in the first closed position (a), the first channel (261) and the second channel (262) of the barb (26) are closed by the walls of the seat (246), and that in the second open position (B), the first channel (261) and the second channel (262) of the prong (26) are in communication, respectively, with the first channel (241) and the second channel (242) of the resilient member (24).