A safety needle and hub module for selective connection with a medical device including a base, the base having a column extending proximally from the base, and a head extending from the column, an undercut being formed by the column and the head, the safety needle and hub module comprising: a needle shield for selectively shielding a distal end of a needle, including: a circumferential wall with a proximal end and a distal end, wherein the proximal end includes a proximal opening and the distal end includes a distal surface with a distal opening extending axially therethrough and communicating with the proximal opening to form an axial passageway, the outer wall having a pair of side posts (326, 328) connecting an upper wall portion with the distal end; and a pair of transverse apertures disposed on opposing sides of the side posts (326, 328) and communicating with the axial passageway; a needle hub movably received within the proximal opening and extending through the passageway of the needle shield, including: a proximal end, a distal end, and a sidewall extending therebetween; and a needle fixedly connected to the distal end of the needle hub; and an actuation button movably received in the transverse apertures of the needle shield to engage the needle shield, the needle hub and the medical device, the actuation button having an upper leg and a lower leg, each comprising a keyhole shaped opening (218, 234), wherein each keyhole shaped opening comprises a locking lobe (220, 236) and an unlocking lobe (222, 238), respectively, such that the needle and the needle hub are allowed to extend through the activation button; wherein the locking lobes (220, 236) are smaller than the unlocking lobes (222, 238); and wherein the head is received within the keyhole shaped opening of the lower leg and the needle hub is received within the upper leg, whereby the locking lobes (220,236) are adapted to lock the needle shield, the needle hub, and the base together and the unlocking lobes (222,238) are adapted for unlocking the needle shield, the needle hub, and the base. a needle shield for selectively shielding a distal end of a needle, including: a circumferential wall with a proximal end and a distal end, wherein the proximal end includes a proximal opening and the distal end includes a distal surface with a distal opening extending axially therethrough and communicating with the proximal opening to form an axial passageway, the outer wall having a pair of side posts (326, 328) connecting an upper wall portion with the distal end; and a pair of transverse apertures disposed on opposing sides of the side posts (326, 328) and communicating with the axial passageway; a circumferential wall with a proximal end and a distal end, wherein the proximal end includes a proximal opening and the distal end includes a distal surface with a distal opening extending axially therethrough and communicating with the proximal opening to form an axial passageway, the outer wall having a pair of side posts (326, 328) connecting an upper wall portion with the distal end; and a pair of transverse apertures disposed on opposing sides of the side posts (326, 328) and communicating with the axial passageway; a needle hub movably received within the proximal opening and extending through the passageway of the needle shield, including: a proximal end, a distal end, and a sidewall extending therebetween; and a needle fixedly connected to the distal end of the needle hub; and an actuation button movably received in the transverse apertures of the needle shield to engage the needle shield, the needle hub and the medical device, the actuation button having an upper leg and a lower leg, each comprising a keyhole shaped opening (218, 234), wherein each keyhole shaped opening comprises a locking lobe (220, 236) and an unlocking lobe (222, 238), respectively, such that the needle and the needle hub are allowed to extend through the activation button; wherein the locking lobes (220, 236) are smaller than the unlocking lobes (222, 238); and wherein the head is received within the keyhole shaped opening of the lower leg and the needle hub is received within the upper leg, whereby the locking lobes (220,236) are adapted to lock the needle shield, the needle hub, and the base together and the unlocking lobes (222,238) are adapted for unlocking the needle shield, the needle hub, and the base. a proximal end, a distal end, and a sidewall extending therebetween; and a needle fixedly connected to the distal end of the needle hub; and