In one aspect, a safety pen needle assembly is provided herein which includes a hub with a needle fixed to the hub, the needle having a distal end, formed for insertion into a patient, and a proximal end. The assembly further includes a shield and a biasing member disposed between the hub and the shield configured to urge the shield distally. A protrusion extends from at least one of the hub and the shield with a channel being formed in at least the other of the hub and the shield. The channel is formed to accommodate the protrusion. The shield is movable from a first position to a second position. In the first position, the shield is spaced from the distal end of the needle such that the distal end of the needle is exposed. In the second position, the shield covers the distal end of the needle. The channel guides the protrusion as the shield moves from the first position to the second position. With this arrangement, a shield may be directed to move in a desired path with stability. In addition, the distal end of the needle may be initially exposed to permit visual confirmation of priming, while allowing the shield to cover a majority of the needle to minimize any needle-related anxiety.

In one aspect, a safety pen needle assembly is provided herein which includes a hub with a needle fixed to the hub, the needle having a distal end, formed for insertion into a patient, and a proximal end. The assembly further includes a shield and a biasing member disposed between the hub and the shield configured to urge the shield distally. A protrusion extends from at least one of the hub and the shield with a channel being formed in at least the other of the hub and the shield. The channel is formed to accommodate the protrusion. The shield is movable from a first position to a second position. In the first position, the shield is spaced from the distal end of the needle such that the distal end of the needle is exposed. In the second position, the shield covers the distal end of the needle. The channel guides the protrusion as the shield moves from the first position to the second position. With this arrangement, a shield may be directed to move in a desired path with stability. In addition, the distal end of the needle may be initially exposed to permit visual confirmation of priming, while allowing the shield to cover a majority of the needle to minimize any needle-related anxiety.

A storage device (30) for storing a pen needle assembly (10) includes a housing (30) having first wells (44) with a dimension for receiving the pen needle assembly and second wells (46) for receiving an inner shield (24) of the pen needle assembly. The second wells (46) have a diameter less than a diameter of the first wells (44). An ejector (40) in the housing (34) can be actuated to eject the used needle hub (16) and outer covers (22) from the first well (44) and the inner shield (24) from the second well (46) for disposal. A method of coupling a pen needle delivery device to a needle hub is also provided.

A medicament delivery member housing assembly is disclosed that extends along an axis in a longitudinal direction from a proximal end to a distal end. The medicament delivery member housing assembly has a housing, a medicament delivery member, a proximal shield, and a distal shield. The housing can have a body and a flexible arm, the flexible arm extending in the longitudinal direction from a proximal end moveable relative to the body to a distal end attached to the body, wherein the flexible arm has a first surface facing towards the proximal end of the medicament delivery member housing assembly and a second surface facing in a radial direction relative to the axis. The proximal shield extends around a first end of the medicament delivery member, the proximal shield can have a surface facing towards the distal end of the medicament delivery member housing assembly to interact with the first surface of the housing during use.

The present disclosure relates to a cap for an injection device. The injection device comprises a body for holding a syringe having a needle extending from an end thereof. The cap is removably attachable to the body. The cap comprises an actuator and a needle shield to cover said needle. The cap further comprises a coupling between the actuator and the needle shield. The coupling is configured such that when the cap is attached to the body of the injection device axial movement of the actuator away from the body causes rotation of the needle shield relative to the body.

A needle unit (20) comprising: a needle hub (21) comprising a needle (23) and a needle shield (22), wherein the needle hub (21) and the needle shield (22) are arranged to form a needle unit (20) where the needle hub is arranged displaceably inside the needle shield such that the needle hub is displaceable along an axis which is parallel with the longitudinal axis of the needle (23) between a shielded position and an exposed position. The needle hub (21) further comprises a first hub locking element (24) and a second hub locking element (26) and the needle shield (22) further comprises a first shield locking element (25) and a second shield locking element (27), said first hub locking element (24) and said first shield locking element (25) engaging each other in the shielded position to establish a first releasable locking mechanism (24, 25) between the needle hub (21) and the needle shield (22), said second hub locking element (26) and said second shield locking element (27) engaging each other in the shielded position to establish a second locking mechanism (26, 27) between the needle hub (21) and the needle shield (22), both the first and second locking mechanisms (24, 25, 26, 27) being arranged as shock proof locks, and where the first releasable lock mechanism (24, 25) is arranged to engage with the lock release element (31) of the injection device (1) when the needle unit (20) is coupled to the injection device, said engagement allowing the first releasable lock mechanism (24, 25) to be unlocked. The invention further provides an injection device comprising the needle unit and a method of assembling an injection device with the needle unit.

Embodiments described herein generally relate to devices, systems and methods for measuring a volume or number of doses remaining in a drug delivery device that is used for delivering a dose to a patient. In some embodiments, a dose measurement system for measuring the liquid volume in a container includes a light guide disposed and configured to reflect electromagnetic radiation toward the container. The dose measurement system also includes a light guide disposed and configured to emit electromagnetic radiation into the light guide. A plurality of sensors are located in the apparatus that are optically coupleable to the light guide and are disposed and configured to detect the electromagnetic radiation emitted by at least a portion of the light guide. The apparatus also includes a processing unit configured to receive data representing the portion of the detected electromagnetic radiation from each of the plurality of sensors. The processing unit is further operable to convert the received data into a signature representative of the electromagnetic radiation detected by the plurality of sensors.

A needle cannula for an injection device, extends along a central axis and comprises: a) a skin piercing distal end (133b), b) a proximal end (133a) configured for penetrating a seal structure (102b) of a medicament container (102), and c) a sidewall extending between the skin piercing distal end (133b) and the proximal end (133a), wherein the proximal end (133a) is defined by an angled surface (134) pointing proximally, the angled surface (134) defining a leading portion (134.1) and a heel portion (134.2), and wherein the angled surface (134) comprises a surface portion (134a, 134b) at the heel portion (134.2) forming an angle (.sub.1) between 50 to 75 degrees with respect to the central axis, and further comprises a surface portion (134c) at the leading portion (134.1) forming an angle (.sub.2) between 60 to 85 degrees with respect to the central axis. An injection needle assembly for an injection device and an injection device comprising such assembly are further described.

The present disclosure provides a shielding apparatus for a lower end of an injection needle and an injection device, and relates to the technical field of injection instruments. By using the shielding apparatus for a lower end of an injection needle in the present disclosure, in the process of mounting a needle holder on an insulin pen, and when the injection needle is completely removed from the insulin pen, the limit block also moves downwardly to abut against a bottom wall of the moving groove, and the shielding cylinder completely covers the lower end of the injection needle, so as to avoid a situation that a user accidentally touches the lower end of an injection needle to be injured, thereby avoiding the safety risk when the lower end of the injection needle is removed.

The novel devices comprise a housing that preferably contains a preloaded, conventional syringe with medication. Both trained and untrained users may administer an injection safely and conveniently to themselves or others in myriad settings. The disclosed devices rely on the user's manual action to insert the needle. Only after the needle is fully inserted is the medicament delivered, resulting in a safer injection. After use, the devices include a locking mechanism that locks a spring-loaded sheath in place around the needle for protection. As a common syringe is utilized, engineering and production issues of automatic injectors' custom syringe assemblies are avoided.