A needle assembly is disclosed, for use with an injection device. The needle assembly comprises a needle hub (20) having a needle (22) and a needle shield (40) arranged for relative axial movement with respect to the needle hub, between a retracted position in which the tip of the needle projects beyond a forward end of the shield and an extended position in which the tip of the needle does not project beyond the forward end of the shield. The needle shield (40) is axially biased towards the extended position. The needle shield (40) is further arranged to be torsionally biased for relative rotational movement with respect to the needle hub (20).

A safety needle has a needle base, a puncture needle, and a safety cap. The puncture needle is inserted into a front end of a needle connection segment of the needle base. The safety cap is combined with a front end of the needle base. The safety cap has a needle cap and a resilient member mounted in the needle base. The needle cap is mounted around the puncture needle. Guiding blocks formed on the rear end of the needle cap are mounted respectively in positioning recesses in a housing of the needle base. The needle cap and an outer cap are mounted around the puncture needle, and the puncture needle can be kept from exposure. The needle cap can be locked with the positioning recesses, and the safety needle cannot be reused and can be distinguished as a used needle.

The present disclosure provides an injection pen needle, which includes a needle head, a needle seat, an outer sleeve, a sliding sleeve and a limit ring, wherein the needle head is arranged on the needle seat; the needle seat comprises baffle plates; the outer sleeve is arranged on the needle seat in a sleeving manner; the lower part of the sliding sleeve enters the outer sleeve and is adapted to move up and down in the outer sleeve, and a channel hole, from which the needle head can penetrate out, is formed in the top of the sliding sleeve; the limit ring is arranged in the outer sleeve; the limit ring comprises sliding blocks; the bottom of the sliding sleeve pushes against the limit ring; and when the sliding sleeve moves up and down in the outer sleeve.

An injection device comprises a needle holder that supports a needle, and a vial holder that supports a vial. A spring urges the needle holder to move towards the vial holder but that movement is restrained by a latch until the time of use. Releasing the latch primes the device by allowing the needle holder to move, whereby a proximal end of the needle pierces a septum of the vial. The latch is preferably released by rotating an actuator. The same rotation preferably frees the needle holder and vial to be advanced axially relative to the actuator, whereby a distal end of the needle can be introduced into the skin of a subject. Compressed air from a tank may be used to drive the discharge of the vial. The air tank preferably surrounds the vial and provides a broad proximal surface, against which manual pressure can be applied to the device.

A needle protection assembly, adapted to protect a tip of a hypodermic needle, comprising a shield adapted, in a protected operative orientation of the needle protection assembly, to shield the tip of the hypodermic needle, a locking element including at least one slot, the slot including at least three surfaces corresponding to three operative orientations of the shield, at least one slot engaging element, functionally associated with the shield, the slot engaging element being disposed within the slot of the locking element and movable relative thereto, between the surfaces, so as to transition the shield between the three operative orientations, and at least one biasing element, adapted for axial biasing of the shield, wherein the three operative orientations include a storage operative orientation, an injection operative orientation, and a needle protection operative orientation.

A safety needle device may include: a hub configured to be connected to a vessel; a needle attached to the hub, the needle extending between a distal end, configured for insertion into a patient, and an opposed proximal end, configured for connection to the vessel; a shield slidable relative to the hub and rotationally constrained, wherein the shield is irreversibly slidable from an initial position, before injection, to a locking position, after injection, passing through an intermediate position; a housing attached to the hub and surrounding: a portion of the hub, a portion of the shield when the shield is in the initial position and in the locking position, and almost totally the shield when the shield is in the intermediate position; and an elastic member biased to push the shield toward the distal end and to resist a longitudinal sliding of the shield toward the proximal end.

A safety needle device is disclosed having a housing configured to couple to a syringe, the housing having a proximal end, a distal end, and a housing body. A first guide path, a second guide path and a third guide path may be disposed on the housing body. A needle hub is disposed on the proximal end of the housing and a needle cannula is attached to the needle hub. The device having a retractable sheath configured to move between an initial position, a retracted position and an extended position with respect to the housing, wherein the initial position partially exposes a distal tip of the needle cannula, the retracted position fully exposes the needle cannula, and the extended position fully covers the distal tip of the needle cannula. The retractable sheath also may have a guide element. The first, second and third guide paths are configured to slidingly receive the guide element. The device also having a first locking member, a second locking member, a rotating cam disposed in the housing body, and a spring element to bias the retractable sheath to an extended state to cover the distal end of the needle cannula upon completion of an injection.

A flexible collar including a rigid body having a cylindrical outer surface and a cylindrical inner surface concentrically aligned with respect to a common longitudinal axis, a top surface, and a bottom surface, the inner surface defining a bore from the top surface to the bottom surface, and each of the top and bottom surfaces having an endless pathway confined to a respective plane and circumscribing a respective edge of the inner surface. The flexible collar further includes at least one accordion region having a plurality of pivots, at least two of the pivots being radially spaced apart from the longitudinal axis at different distances, and the accordion region being configured to radially deform.

A safety device for a medicament delivery device having a housing, a medicament delivery member guard in the housing being rotationally fixed and axially movable relative to the housing, a biasing element, and a rotator arranged within the housing that rotates relative to the housing between an initial unlocked position and a final locked position, wherein the medicament delivery member guard has a guide track and a stop member, the guide track has an inclined section configured to cause rotation of the rotator, where the rotator has a protrusion configured as a stop surface, where in an initial unlocked position the protrusion is arranged in the guide track and where in a final locked position the rotator is rotated with respect to the position of the medicament delivery member guard, and wherein in the final locked position the medicament delivery member guard is locked against distal movement relative to the housing.

A drive mechanism for a delivery device is presented containing, a rotator having an outer surface and an inner surface, the rotator configured to rotate from a first position to a second position. A needle cover having an inner surface that engages the outer surface of the rotator. A rotatable plunger rod having an outer surface configured to engage the inner surface of the rotator. When the rotator rotates from the first position to the second position, the rotatable plunger rod is rotated by the rotator and a plunger rod spring is released from a pre-tensioned state to exert a force on the rotatable plunger rod.