A needle tip shielding device, comprising a base plate with a hole extending there through from the proximal side of the base plate to the distal side of the base plate, and at least one resilient arm extending at an attachment point at said base plate (101) is provided. The resilient arm has a resting state wherein a distal hook of the resilient arm will coincide with a straight imaginary line extending longitudinally through said hole in the axial direction of said base plate. The resilient arm comprises a knob at its distal end, said knob extending laterally from the resilient arm. The knob is shaped with an outer curvature in the transversal plane around an axis parallel to the central axis of the needle tip shielding device and said knob is shaped with an outer curvature in the midsaggital plane around an axis perpendicular to the central axis of the needle tip shielding device.
