A needle tip guard (10) for a medical device, in particular for an intravenous cathether assembly, the needle tip guard (10) comprising: a base portion (12) having a bore (14) extending along an axial direction A for receiving a needle (34) having a needle shaft (38) such that the needle (34) may extend through the bore (14) and move relative to the needle tip guard (10) from a spread- apart position in which the needle tip (36) is outside the needle tip guard (10) to a protective position in which the needle tip (36) is covered by the needle tip guard (10) first (16) and second jaw (18) extending from the distal side of the said base portion (12) generally in the axial direction A； each of the said first (16) and second jaws (18) having a head portion (20, 22) in the region of its free end, wherein the said first jaw (16) rests over the needle shaft in the spread-apart position: one or more locking means onto the outer surface of the needle tip guard (10) for securing the said needle tip guard (10) to the said medical device； and at least one resilent member or elastic element (26) integrally mounted onto the said jaws (16, 18) in a region between the said base portion (12) and the head portions (20, 22) such that said resilent member or elastic element (26) exerts an inward restoring force on the said jaws (16, 18) when the jaws are fully or partially spread apart by the said needle shaft (38).Un protector para punta de aguja (10) para un dispositivo médico, en particular para un conjunto de catéter intravenoso, el protector para punta de aguja (10) comprende: una porción base (12) que tiene un orificio (14) que se extiende a lo largo en dirección axial A para recibir una aguja (34) que tiene un eje de aguja (38) tal que la aguja (34) se puede extender a través del orificio (14) y moverse con relación al protector para punta de aguja (10) desde una posición que se extiende separadamente en la cual la punta de aguja (36) está afuera del protector para punta de aguj
