A fluid administration medical device (10) comprising: catheter tube (14) a hub (12) having a distal section (34) and a proximal section (36), wherein the distal section (34) is joined to the catheter tube (14) and the proximal section (36) defines a housing (24) one or more ports (58) connected to the hub (12) by a fluid passage (62) through a passageway (72) a needle (20) extending through the hub (12) and the catheter tube (14) and defining an axial direction (A), wherein the needle (20) has opposite proximal and distal ends (22, 24), the distal end (22) forming a needle tip (30) a needle hub (16) attached to the proximal end (24) of the needle (20) a needle guard (26) slidably arranged on the needle (20), wherein the needle guard (26) is movably retained in the housing (48) of the hub (12) when the needle (20) extends through the hub (12) and the catheter tube (14), wherein the needle guard (26) is removable from the hub (12) once the needle tip (30) is received in the needle guard (26) upon withdrawal of the needle (20) from the catheter tube (14) and wherein the hub (12) provided with an opening or window (68) providing additional space for arms (40, 42) of the needle guard in the ready position.
