Abstract: In one aspect, a safety pen needle assembly includes a hub having an open proximal end, a needle fixed to said hub, said needle having a distal end for insertion into a patient, and a proximal end extending into said open proximal end of said hub, a shield having a distal opening and an internal thread that is engaged to said hub so as to be manually movable relative to said hub to selectively expose said distal end of said needle via proximal movement of said shield and cover said distal end of said needle via distal movement of said shield, said shield having an open distal end, and a cap that seals the distal opening of the shield.

Abstract: In one aspect, a safety pen needle assembly is provided which includes a hub having an open proximal end, a needle fixed to the hub having a distal end, and a shield moveably mounted to the hub so as to be movable relative to the hub to selectively cover the distal end of the needle. An interface is defined between the shield and the hub which is sufficiently sealed so as to define a sterility barrier which prevents ingress of contaminants through the interface. At least one sterility barrier is mounted directly to, and across, an open proximal end of the hub and an open distal end of the shield.

Abstract: In one aspect, a safety pen needle assembly is provided which includes a hub having an open proximal end, a needle fixed to the hub having a distal end, and a shield moveably mounted to the hub so as to be movable relative to the hub to selectively cover the distal end of the needle. An interface is defined between the shield and the hub which is sufficiently sealed so as to define a sterility barrier which prevents ingress of contaminants through the interface. At least one sterility barrier is mounted directly to, and across, an open proximal end of the hub and an open distal end of the shield.

Abstract: In one aspect, a safety pen needle assembly is provided which includes a hub, a needle fixed to the hub, and a shield formed to at least partially telescope over the hub. Thread elements permit relative rotation between the hub and the shield. Initially, the elements are in threaded engagement with the shield being positioned relative to the hub with a distal end of the shield sidewall being located distally of a distal end of the needle. Also, in the initial state, the shield and the hub are configured with a rotation-resistance arrangement which inhibits relative rotation between the hub and the shield. The rotation-resistance arrangement is surmountable to allow relative rotation between the hub and the shield with an at least threshold amount of torque being applied, the threshold amount of torque being greater than required to mount the pen needle assembly onto an injector body.

Abstract: In one aspect, a safety pen needle assembly is provided which includes a hub, a needle fixed to a transverse wall of the hub, and a shield formed to at least partially telescope over the hub. An outer ablumenal surface of the hub and an inner lumenal surface of the shield are formed with cooperating thread elements to permit relative rotation between the hub and the shield. In an initial state, the cooperating thread elements are in threaded engagement with the shield being positioned relative to the hub with a distal end of the shield sidewall being located distally of a distal end of the needle. Also, in the initial state, the shield and the hub are configured with a rotation-resistance arrangement which inhibits relative rotation between the hub and the shield.