Patent ID: 11684727

Abstract:
A pen needle (30, 110) is disclosed for coupling to a delivery device (10) and piercing a septum on the delivery device. The pen needle includes a collar (32, 112) having a side wall (36, 116), an open proximal end (38), and a distal end (40, 118) having a coupling member (50). The pen needle also includes a needle hub (34, 114) having a proximal end (50, 124) and a distal end (58, 126), where the proximal end of the needle hub has a coupling member coupled to the distal end of the collar. The needle hub rotates independently of the collar. A needle (52) extends from the distal end of the needle hub, and a projection (76, 126) extends from the proximal end of the needle hub for piercing a septum (106) of a delivery device. The collar (32, 112) rotates independently from the needle hub (34, 114) so that the collar screws onto the threaded end of the delivery device while the needle hub does not rotate and the projection advances to pierce the septum (106) without rotating.