A protective flange (10) for protecting a needle tip (14) comprising an elongated arm (22) and a body section (16)； characterized in that: - the arm (22) comprises a protection section (29) at a distant end of the arm (22) and a projection (42) extending from a proximal end (48) of the arm (22) opposite the distant end of the arm (22), and the body section (16) comprises a proximal hole (20), a distant hole (18), a free end (40) and a fixed distant end (44) not axially movable in relation to to the arm (22)； - in which the protection section (29) of the arm (22) is movable from a previously activated or first position in which the free end (40) of the body section (16) rests on the projection (42) of the arm (22) to form a curved section of the body that generates an elastic force configured to axially extend the body section (16) when activated, the proximal hole (20) and the distant hole (18) are in alignment to receive a needle (12) defining a needle axis and having a needle tip (14), such that the protection section (29) is radially deflected outwardly by the needle towards the needle axis, to an activated or second position in which the deflection in the arm (22) is released to allow the free end (40) of the body section (16) to separate from the projection (42) of the arm (22) and the protection section (29) moves radially inwards towards the axis of the needle and d Is the tip of the needle (14).Una brida protectora (10) para proteger una punta de aguja (14) que comprende un brazo alargado (22) y una sección del cuerpo (16)； caracterizada por que: - el brazo (22) comprende una sección de protección (29) en un extremo distante del brazo (22) y un saliente (42) que se extiende desde un extremo próximo (48) del brazo (22) opuesto al extremo distante del brazo (22), y la sección del cuerpo (16) comprende un orificio próximo (20), un orificio distante (18), un extremo libre (40) y un extremo distante fijo (44) no móvil axialmente con relación al brazo (22)； - en l
