The invention relates to a needle guard (26) for use in a medical device, in particular for use in a catheter device, including a base portion (44) having a needle passage (56) extending in an axial direction from a proximal side (58) of said base portion through said base portion to a distal side (60) of said base portion wherein a needle shaft (28) having a principle outer profile can be movably arranged in said needle passage； first and second arms (46,48)extending sub-stantially in said axial direction from said distal side of said base portion, wherein said first arm has a distal region (62) and a proximal region (64)； and a distal wall (50) transversely arranged at said distal region of said first arm. The invention further relates to a catheter apparatus including such a needle guard and a needle.
